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Open Caveats - Version 7.2(2)とResolved Caveats - Version 7.2(2)

リリースノートより、Open Caveats - Version 7.2(2)とResolved Caveats - Version 7.2(2)を抜粋。


Open Caveats - Version 7.2(2)
Table 2 Open Caveats  DDTS Number Software Version 7.2(2)
 
  Corrected Caveat
CSCsd50888 No L2TP: connections fail intermittently -> error 678: There was no answer
CSCse88291 No ASA crashes with WEBVPN user login when memory is running low.
CSCse92565 No Traceback in Thread Name: tmatch compile thread after clear config all
CSCsf04123 No Packet drops through VPN due to No route to VPN_peer_ip_address
CSCsf05298 No Citrix not supported with CSC module
CSCsf13404 No PIX cosmetic high memory use in context show memory
CSCsf25418 No Traceback in Thread Name: tmatch compile after assert
CSCsf27202 No AAA Radius NAS-Port-Type not sent in authentication request
CSCsg03102 No Minor correction to vpn-addr-assign command reference documentation
CSCsg20953 No WebVPN sessions created in the Secure Desktop don't expire
CSCsg26668 No Undefined CSCO functions in JavaScript-generated HTML
CSCsg34853 No Traceback with Thread Name: Dispatch Unit
CSCsg38186 No Traceback in Thread Name: Dispatch Unit
CSCsg43591 No SCP connection to PIX fails
CSCsg46962 No WebVPN some functions do not work in javascript
CSCsg47023 No L2TP Connections with Certificates to ASA Fail to Connect
CSCsg47241 No Traceback when parsing LDAP config
CSCsg48442 No Ping through ASA fails when using interface PAT on PPPoE interface
CSCsg53120 No ASA WebVPN Time-out on Database Requests
CSCsg56876 No ASA may crash after applying http or IM deep inspection
CSCsg60095 No VPN traffic permitted by vpn-filter is denied
CSCsg61719 No SNMP: Coldstart Trap is not sent
CSCsg62488 No Traceback in Thread Name: Unicorn Proxy Thread
CSCsg62878 No ocsp signer crl checking with crl none is not falling back to none
CSCsg63145 No Traceback with Thread Name: PIX Garbage Collector
CSCsg64427 No Compression: Can't turn off http-comp
CSCsg64450 No FO: http auth message should be supressed on standby console
CSCsg64948 No 1550 blocks exhausted during radius authentication stress test
CSCsg65434 No Multiple ipsec peers : PIX/ASA stops processing the IPSEC peers list
CSCsg66126 No Large H.323 Registrations Fail through PIX
CSCsg67443 No ASA Fails Recursive Route Lookup
CSCsg67961 No L2TP: IKE rekeying prior to IPSec rekey terminates MAC L2TP
CSCsg68141 No Show run router causes traceback in thread name: ci/console
CSCsg69275 No 1017-88 byte blocks leaked: _tmatch_summary_func+2877 after vpn sys test
CSCsg69281 No 3000 - 576 byte blocks leaked: _kernel_delete_sa+39 after vpn sys stress
CSCsg69408 No Need warning when using time based ACLs with policy NAT/PAT
CSCsg69448 No Need to update 7.x conf guides, time based ACLs not supported w/nat-pat
CSCsg69469 No Incorrect user privileges when logging in with ASDM 5.2.1.54
CSCsg69998 No tcp intercept not working when the inside host is running windows OS.
CSCsg70012 No no sysopt noproxyarp c1in failed to remove noproxyarp for interface c1in
CSCsg70698 No Session timer is not reset during WebVPN ActiveX and Java tunneling
CSCsg71369 No P1 SA stuck in AM_FREE on secondary for ipsec sessions using net ext mod
CSCsg71416 No encrypt rules added in wrong order - NEM misconfig causes data issues
CSCsg71534 No 40 P1 sa's got stuck in MM_Wait_Delete on secondary w/vpn system test
CSCsg71579 No Programming assertion malloc.c:3822 on secondary after failover from pri
CSCsg73076 No L2TP/IPSEC to ASA with certificates fails over low speed ISDN
CSCsg73376 No Traceback in Thread Name: ci/console with large config tftp download
CSCsg75094 No LDAP: ASA caanot authenticate to Active Directory using MD5
CSCsg75996 No Radius authentication with downloadable acls causes crash
CSCsg76777 No 7.2 transparent / change of behavior : ASA does not retain the src mac
CSCsg77097 No WebVPN OWA 2003 email.cisco.com inbox fails to load intermittent
CSCsg77099 No WebVPN Java archives with uncompressed entries fail through rewriter
CSCsg77390 No AAA: port-to-port static for port 80 and aaa http listener on same ifc
CSCsg77841 No Cfg Guide: remove flash size match from failover hw criteria
CSCsg78524 No With WebVPN login we type it once incorrectly and the ASA tries 3 times
Resolved Caveats - Version 7.2(2)
Table 3 Resolved Caveats   DDTS Number Software Version 7.2(2)
 
  Corrected Caveat
CSCei33965 Yes MPC embryonic timoeout value overwrite global conn timeout
CSCek62768 Yes crash in Unicorn Proxy Thread with large WebVPN session count in build30
CSCsb54431 Yes clear in unpriviledged mode should be removed if not applicable.
CSCsb63230 Yes Need a command to perform SSM password recovery from the ASA CLI
CSCsc01694 Yes CRC errors on SSM-4GE Electrical ports on initial bringup
CSCsc37965 Yes IP-directed broadcasts no longer allowed through device.
CSCsc89262 Yes Syslog 722007 (WEBVPN_SVC_MSG_EMERG) severity needs to be changed
CSCsd13314 Yes show service policy flow' command shows incorrect flow match
CSCsd40989 Yes L2TP: Populate client type/version within session database
CSCsd45605 Yes 2 routes to same n/w w same metric different ifx should not be allowed
CSCsd52578 Yes Traceback in thread: snp_timer_thread
CSCsd54495 Yes Traceback eip _strdup(0xebacac)+0x78 with large customer configuration
CSCsd57264 Yes MPF: type syntax in help policy-map is missing a ]
CSCsd58688 Yes SVC connections are not exempt from aaa authentication rules like IPSec
CSCsd59295 Yes WCCP static bypass not working with vlan interfaces
CSCsd59936 Yes Registering to the RP for PIM fails if fragmented in more then 12 packs
CSCsd60448 Yes Proxy-bypass with automatic choice of target server
CSCsd64749 Yes Failover: automatic removal of SSL trustpoint not replicated to stdby
CSCsd67093 Yes PPPoE:Vpdn group for PPPoE shouldn't be configurable in Transparent mode
CSCsd67160 Yes PPPoE:ip address pppoe cmd shouldn't be configurable in multi mode
CSCsd70581 Yes Crash output to console has incomplete configuration
CSCsd71387 Yes EzVPN: Tback IKE Daemon (Old pc 0x00507425 ebp 0x0333c6d8)
CSCsd74328 Yes Traceback when changing sec level on an ifc and failover cfg with NAT
CSCsd74551 Yes Add NP drop reason documentation for WCCP drops
CSCsd81262 Yes CA cert with spaces could fail to install
CSCsd81294 Yes crypto ca import' of SSL cert may traceback in Thread Name: accept/http
CSCsd82307 Yes FO: CLI position can get out of sync causing cmd replication failures
CSCsd82575 Yes unexpected IGMP joins sent when configuring multicast routing
CSCsd84011 Yes REGEX: ^ (match from beginning of text) does not work in some cases
CSCsd88471 Yes VPNLB SVC uses virtual cluster certificate after redirecting to a master
CSCsd91587 Yes functioning email proxy session generates syslog message error
CSCsd93380 Yes Packets for VPN-l2l peer get dropped instead of encrypted
CSCsd94372 Yes dhcp proxy: no RELEASE sent after failover and disconnect of vpn client
CSCse00996 Yes tcp normalizer drop to-the-box traffic not conforming to RFC793 (MSS)
CSCse01293 Yes Traceback in Thread Name: arp_forward_thread
CSCse02354 Yes Traceback in Thread Name: Dispatch Unit
CSCse03176 Yes Problem of group-name used in 'sasl-mechanism kerberos group-name'
CSCse05819 Yes PIX: 33MHz GIG cards show speed/duplex unknown if nonegotiate configured
CSCse07242 Yes Traceback in pix_flash_config_thread
CSCse08726 Yes LDAP group-based policy Enforcement shouldn't require Cisco schema
CSCse08746 Yes ASA send Radius attribute 31 source IP address as 0.0.0.0
CSCse09458 Yes RadiusSDI feature of VPN Client fails with blank XAUTH text
CSCse09503 Yes Syslog 304001 not generated when strict-http action allow log configured
CSCse10096 Yes i2c_write_byte_w_suspend() error after rebooting ASA5505
CSCse10714 Yes Shun behavior change in 7.x
CSCse12021 Yes Error msg change when attempt auth-srvr-group None in ipsec tunn-grp
CSCse13544 Yes Increase in memory usage after enabling-disabling webvpn
CSCse14296 Yes Trustpoint not found if ASA not enrolled with the trustpoint
CSCse15854 Yes clear config webvpn only partially clean-up proxy-bypass...
CSCse15977 Yes Traceback when two admin sessions are working on the same capture
CSCse17176 Yes SUA policy is unspecified -WEB login requires user to authenticate twice
CSCse17638 Yes IM: Misc CLI issues
CSCse17660 Yes Incorrect LDAP debug error when incorrect RDN configured
CSCse18005 Yes PIX/ASA originate-only VPN fails to create dynamic ACL
CSCse19020 Yes PPTP Pass-through not working due to inspection
CSCse20501 Yes Passive FTP to Multinet server fails
CSCse20538 Yes IKE Syslogs 713041 713042 should specify interface name
CSCse21451 Yes Memory leak in VPN fover module during failover config syncing
CSCse22330 Yes Traceback in Thread Name: Dispatch Unit
CSCse22332 Yes Failed to deploy config when first line in config contain ! character
CSCse22659 Yes CIFS server names limited to 15 characters
CSCse22668 Yes CIFS should use DNS lookups for long server names
CSCse23164 Yes traceback in thread Name: qos_metric_daemon
CSCse23165 Yes Message sent to client when aaa authorization fails has changed
CSCse23554 Yes Memory leak within event_smtpmgr:es_SmtpSndMSG function
CSCse23751 Yes Nested tracebacks may not stop without manual device reload
CSCse24432 Yes DHCPRelay: Some clients may not get NACKs
CSCse24537 Yes RIP: [no] access-list defined in distribute-list should display err msg
CSCse24921 Yes debug icmp does not show request packet being sent
CSCse25515 Yes FO: dhcpd warnings seen on standby during replication of config
CSCse26317 Yes inspect radius-acct: show user with IP cuasing err msg w/ multiple pmaps
CSCse26469 Yes Cannot store more than one vpdn username/password pairs locally
CSCse27184 Yes basic attribute is not checked in all mode config attributes, may reload
CSCse27249 Yes FO: interface monitoring not working on most recent created interface
CSCse27787 Yes AIC SIP: SIP messages might fail state-check knob when record-route on
CSCse28430 Yes MS AD-LDAP: set default RDN-Naming Attribute to be sAMAccountName
CSCse28540 Yes LDAP admin bind: support secure SASL-MD5 and SASL-Kerberos methods
CSCse29700 Yes WebVPN and SVC Sessions being disconnected due to Idle Timeouts 40+Days.
CSCse29840 Yes AdmissionConfirm received without an AdmissionRequest, ACF dropped
CSCse30049 Yes SSH conns to the box not removed after a Failover
CSCse30061 Yes VPN decompress error when decrypting packet with IP compression
CSCse30102 Yes VPN dynamic ACL can be deleted from the CLI
CSCse30616 Yes ASA VPN load balancing cannot ping cluster ip address
CSCse32309 Yes Timeout of secondary flow causes traceback in Thread Name: Checkheaps
CSCse33143 Yes Dynamic ACL created under with command access-list <name> d ...
CSCse33211 Yes aaa http authentication doesnt work when interface IP is named
CSCse33736 Yes DoD Certs:Subject Alternative Name support for VPN Author for IPSec RA
CSCse33851 Yes H.225 releasecomplete message was dropped by the firewall
CSCse33986 Yes Small memory leak when tunnel denied due to unavailable Integrity Server
CSCse34179 Yes MFW-R: traceback in 'clear cfg all' during a performance test.
CSCse34477 Yes ESMTP: mail-relay param w/o any action accepted, junk chars in sho run
CSCse34508 Yes ESMTP: help mail-relay display needs changes
CSCse34540 Yes telnet and http(asdm) conns are not removed after failover
CSCse35370 Yes AIC SIP: should not allow overwrite inspect sip <pmap> @ default class
CSCse35566 Yes Traceback with 'Thread Name: Dispatch Unit' on clear xlate
CSCse35610 Yes traceback in ci/console after editing group-p CLI sitting at more prompt
CSCse35636 Yes RTP Conformance print SSRC re-initializing message for bad SSRC Packet
CSCse36112 Yes PIX/ASA never processes huge access-list if it runs short of memory
CSCse36519 Yes IM: MSN code improvement to reduce the risk of false positives
CSCse36691 Yes Traceback on 'cl conf all' with delay-free-poisoner enabled
CSCse37315 Yes AIC DNS - Traceback after removing certain MPF actions with DNS traffic
CSCse37733 Yes ASA Crash with nat ID as 0
CSCse37787 Yes Traceback after becoming Active with VPN connections
CSCse38062 Yes ICA Client users cannot connect to Citrix through WebVPN
CSCse38087 Yes Kerberos authentication fails after during stress test in multiple-mode
CSCse38659 Yes unexpected IGMP rejoins when joins previously cfg'd and mcast re-enabled
CSCse39344 Yes AD UserAccountControl attrib not enforced if using LDAP Authorization
CSCse40332 Yes ASA multiple mode rollback of config failed for admin and other VC
CSCse40671 Yes RTSP w/PAT, PIX set client_ports to NULL
CSCse40704 Yes Lock IMB boot code
CSCse41071 Yes ldap-login-password not hidden in config
CSCse41663 Yes WebVPN using SDI Auth - New PIN mode does not work - IPSec OK
CSCse42014 Yes Java applets archive mangling fails when the codebase is a full url
CSCse42332 Yes ASA5505: PORT up/down stat is not reflected in show stat + more
CSCse42413 Yes Traceback after WebVPN authentication with FreeRadius
CSCse43078 Yes WebVPN: links at www.microsoft.com <outbind://111/www.microsoft.com> fail to work
CSCse43152 Yes WebVPN/SVC Radius Passwd-Mngt fails when using domain\username format
CSCse43611 Yes Flash: Wr mem running-config to flash has some issues
CSCse43807 Yes webvpn url entry with embedded user:Passwd fails with URl is invalid
CSCse44138 Yes WebVPN Citrix ICA connection losing connectivity due to client_tx_q_full
CSCse44258 Yes Modifying vpn-filter acl blocks normal traffic from inside to outside
CSCse45308 Yes Static nailed rule does not match conn destined for that address
CSCse45327 Yes VPN stateful failover gets out of sync
CSCse45694 Yes Standby: Traceback in Thread Name: IKE Daemon with dACL
CSCse45948 Yes write memory all did not report failure for failing to save config
CSCse45971 Yes Calling-Station-ID passed to radius as 0.0.0.0 for webvpn with pw mgmt
CSCse46220 Yes ASA: Poor Performance and Out-of-Order packets with SSM module enabled
CSCse46292 Yes Traceback in Thread Name: snmp
CSCse46874 Yes Enhancement: per-interface authorization for IPSec connections
CSCse47150 Yes Traceback in Thread Name: Dispatch Unit with ESMTP Inspect enabled
CSCse47328 Yes Fix RM flow drop reason #defines
CSCse47400 Yes WebVPN: Unable to Authenticate using DoD Certificate
CSCse48146 Yes AIC SIP: fails to match request method <unknown> in inspect SIP pmap
CSCse48193 Yes ASA vulnerable to cross-site scripting when using WebVPN
CSCse49450 Yes AAA - dACL and Cisco-AV-Pair ACLs are only applied to the 1st SVC user
CSCse49851 Yes 7.2 5510 security plus license should support only 2 contexts by default
CSCse50716 Yes URL Filtering: Traceback with Thread Name: Dispatch Unit
CSCse50772 Yes L2TP/IPSec: MS-Clients unable to connect when ASA is behind a NAT device
CSCse50782 Yes DNS-based LDAP Authentication/Authorization fails
CSCse50804 Yes OSPF stuck in EXCHANGE in certain assymetric routing scenarios
CSCse52050 Yes Very large ACL applied to NAT or Crypto may traceback in Checkheaps
CSCse53294 Yes Configuration begin syslog 111007 shows wrong local ip address with ssh
CSCse53987 Yes vPif_getVpif: bad vPifNum' errors with cut-through proxy enabled
CSCse54543 Yes ASA cosmetic high memory use in context show memory
CSCse54582 Yes AAA: Traceback in Thread Name: Dispatch Unit with Radius auth
CSCse54749 Yes 210007 LU allocate xlate failed syslog generated by overlapping nat cfg
CSCse55066 Yes VPN: orignate-only VPN fails after failover
CSCse55931 Yes 1550 byte block depletion prohibits websense communication
CSCse57386 Yes 5505: EZVPN Remote: DPD timeout is 5 minutes,should be 90 sec
CSCse57889 Yes Execute certain fover cmds trigger interface testing
CSCse58602 Yes SVC fails to establish if Cisco-AV-Pair contain both ip and webvpn ACEs
CSCse59113 Yes 5510 base license should not limit 4ge card
CSCse59498 Yes WebVPN: Citrix traffic may cause Traceback in Thread Name: Dispatch Unit
CSCse59955 Yes Rommon in ASA5505 main card would reset ASA-SSC-10 card.
CSCse61225 Yes Support daylight savings changes in Energy Policy Act of 2005
CSCse61315 Yes SSMIO-4GE SFP interfaces G1/1 - G1/3 don't operate
CSCse61696 Yes HTTP server enable doesn't take Port number change in Multiple-router mo
CSCse62603 Yes alias command does not work
CSCse62914 Yes Standby device Traceback in Thread Name: tcp_thread
CSCse63079 Yes cpu hog in ssh_init process when connecting via SSH
CSCse63596 Yes inspect RSH fails when 1st segment contains more than just port
CSCse65000 Yes WebVPN: Cisco Call Manager is failing thru rewriter
CSCse66007 Yes AAA commands not working for serial console in multi context mode
CSCse66133 Yes Traceback in Thread Name: ssh when ACLs are displayed in SSH or ASDM
CSCse66235 Yes Memory exhausts with logging flash-bufferwrap and high syslog level
CSCse66442 Yes cut-thru proxy: 'Authentication not required' returned on browse to pix
CSCse66490 Yes Traceback with 'Thread Name: accept/http' after editing time-based ACLs
CSCse67584 Yes ldap attr map CLI renders console/session unusable in multi mode
CSCse67916 Yes Potential memory leakages in webvpn_ica_socks.c with ASA internal errors
CSCse68781 Yes Traceback in Thread Name: emweb/https when starting to load WebVPN
CSCse70163 Yes 5505/SSC I2C lock up in Rommon.
CSCse70181 Yes WebVPN: Traceback when using 'debug webvpn citrix 10'
CSCse70993 Yes Traceback when applying large ACL to NAT or Crypto Map
CSCse71146 Yes IPSec RA clients with large dACL may cause Traceback in Thread Name:aaa
CSCse73812 Yes Traceback in Thread Name: Dispatch Unit when L2L VPN Initiator
CSCse74097 Yes Mac-exempt: mac spoofing does not generate the expected syslog
CSCse74391 Yes WebVPN not using custom text color for some dialogs
CSCse74778 Yes Traceback in Thread Name: IP Thread with PPPoE enabled
CSCse74838 Yes WebVPN: DSF Referral messages missing on distributed Servers over WebVPN
CSCse75485 Yes Traceback in Thread Name: fover_parse during config sync
CSCse75523 Yes Received ARP request collision when issuing write standby
CSCse76085 Yes WebVPN: OWA: file download with size>100KB stops
CSCse76095 Yes Traceback in Thread Name: Checkheaps when starting WebVPN
CSCse76115 Yes Cascade delimiter not inserted with correct priority for dynamic crypto.
CSCse76150 Yes No TACACS+ authorization request sent for show run command
CSCse76171 Yes ASA reverse bytes order of DHCP scope when using SVC
CSCse76480 Yes 4 byte block allocation lacks the padding
CSCse77122 Yes FTP-data connection not replicated back to primary after failover
CSCse77261 Yes Traceback in Thread Name: MFIB with pim mcast routing
CSCse77680 Yes P2 in progress test broken - could cause unexpected rekey.
CSCse77855 Yes buffer leak upon IPSEC spoofing.
CSCse77943 Yes Failover: Primary takes over as Active after reload
CSCse78065 Yes # sign in config not replicated to Standby unit
CSCse78228 Yes 7.2.1 Crash in snp_tcp_ha_flow_belongs_to_active_context
CSCse78299 Yes Primary/Secondary units become Active state when failover link failed
CSCse78755 Yes Traceback in Thread Name: Dispatch Unit when starting DPD timer for SVC
CSCse78779 Yes Standby become active after fo link failed with fover hold time > 15 sec
CSCse79422 Yes RA VPN Phase 2 fails when local pool with classless mask is used
CSCse80001 Yes Traceback in IKE daemon while trying to post event (syslog)
CSCse80897 Yes AAA: User-Password and EAP-Proxy should not be in same RADIUS request
CSCse81073 Yes WebVPN: Traceback with Thread Name: emweb/https
CSCse81232 Yes Failover pair loses failover state configuration after upgrade to 7.2.1
CSCse81273 Yes Traceback 'Thread Name: Dispatch Unit' with PPPOE and SSM-CSC
CSCse81330 Yes Strict HTTP inspection ignores '304 Not Modified' -syslog message 415014
CSCse81633 Yes ASA 4GE-SSM Gig ports silently drop IGMP joins
CSCse81656 Yes LDAP CLI is not displaying quotes when parameters contain spaces
CSCse82262 Yes No specific error message while uploading a file via HTTPS
CSCse82743 Yes Java applet fails to load through WebVPN
CSCse83515 Yes ASA-5550 reports incorrect amount of RAM in show version output
CSCse83905 Yes dhcprelay stops working if FW interface ip address is modified
CSCse85490 Yes SSC Rommon resets 5505 switch ports.
CSCse86877 Yes WebVPN: DNS resolving Port Forwarding hostname entries when it shouldn't
CSCse86968 Yes Standby unit sends accounting records for replicated DACL commands
CSCse88572 Yes SIP: Does not parse the compact form of Call-ID
CSCse88632 Yes WebVPN: Kronos Applet doesn't launch
CSCse88873 Yes IPV6: TCP SYN-ACK with layer 2 padding dropped
CSCse89013 Yes debug radius decode does not show all attributes in Radius requests
CSCse89471 Yes WebVPN: RDP client VBScript function not recognized correctly
CSCse90732 Yes copy command prevents copying old asdm to tftp
CSCse90796 Yes ASA with PPPOE crashes in IP Thread
CSCse90864 Yes 3DES license is not accepted in 7.2
CSCse90886 Yes MacOS VPN Client does not pass traffic with client-update feature on Asa
CSCse91039 Yes WebVPN: SSL Cert Request from ASA should include all trusted issuer DN's
CSCse91930 Yes Traceback when using packet tracer with multiple ACL rules
CSCse92016 Yes WebVPN: Refresh URL in http header not mangled - port CSCse00556 to asa
CSCse94012 Yes VPN: wrong event generated when concurrent IKE negotiation max exceeded
CSCse94158 Yes FIPS: Add CRNG callback for new RNGs added since 7.0.4
CSCse94162 Yes FIPS: Porting damage in content-mangling code
CSCse94241 Yes Traceback: Thread Name:vpnlb_thread when taking over as failover active
CSCse95357 Yes WebVPN: reply/forward action of OWA2000 does not attach message
CSCse95408 Yes Go button shows in pages opened from homepage with url entry disabled
CSCse95437 Yes Capture: Circular buffer stops capture when buffer full
CSCse96289 Yes VPN: Traceback with Thread Name: Dispatch Unit
CSCse96559 Yes vpn-filter does not work when used with IOS ESVPN client
CSCse98397 Yes EAP state engine triggers retransmission and corrupts EAP session
CSCse98516 Yes Webpvn: special character '?' cannot be configure in url-list
CSCse98719 Yes Connection fails with the CA cert of 4096 bits fails with Error #72eh
CSCse98959 Yes Static Analysis: Add options to make sa for changelist
CSCse99033 Yes tracked route removed from Standby firewall after failover
CSCse99107 Yes webvpn/ssl - flow control issues transferring large OWA attachments
CSCse99257 Yes WebVPN: ActiveX port-forwarder problem
CSCse99783 Yes DHCP Relay fails when static specified
CSCsf00368 Yes Crashinfo file may incorrectly show 0% free memory
CSCsf01451 Yes Inspect IM breaks websense
CSCsf02102 Yes SIP, show conn after phone registration has wrong information displayed
CSCsf02349 Yes Traceback in ThreadName: ci/console when add certificate in wrong format
CSCsf04271 Yes WebVPN connections fail after reload with self signed certs
CSCsf05931 Yes AAA: group-lock does not handle tunnel-group names with spaces
CSCsf07036 Yes ASA hangs during initialization after 4GE card is shutdown
CSCsf08950 Yes AAA: Memory leak with ACL in cut-through-proxy
CSCsf09795 Yes Using SecureID to auth users may cause high CPU
CSCsf10185 Yes ASA should allow 255.255.255.255 mask on PPPoE interface
CSCsf10248 Yes Unable to pass traffic from one context to other through shared int
CSCsf10663 Yes High CPU / System locks up when adding a network object entry
CSCsf10973 Yes SSM-4GE I/O card hangs after backplane GPIO power off
CSCsf11095 Yes show conn display problems for secondary conns with static network
CSCsf11672 Yes SMTP Inspection with multiple line response fails
CSCsf12352 Yes Remove unwanted console messages related 4GE SSM
CSCsf12436 Yes show version on 5505 display cpu as Pentium
CSCsf13906 Yes ASA may hang during boot
CSCsf14075 Yes WebVPN: OWA 2007 does not send response/forward
CSCsf14370 Yes cut-through authentication redirects port, causing connectivity issues
CSCsf15361 Yes L2TP: disconnects thru PAT/ DSL topology
CSCsf15525 Yes L2TP: Failure to connect within 120 seconds of initial disconnect
CSCsf16622 Yes Firewall should log syslog when IGMP report denied by IGMP ACL
CSCsf16633 Yes ASA - OSPF over VPN tunnel not working correctly
CSCsf17256 Yes ASA 7.2.1 crash with thread emweb/cifs from snp_tcp_intercept_cb()
CSCsf18590 Yes show failover not show stateful vlan link failed in link failed scenario
CSCsf18739 Yes OWA2003 gives an &nbsp error when used with Webvpn
CSCsf19244 Yes Traceback in Thread Name: pix_flash_config_thread with vpdn config
CSCsf20095 Yes ASA5505: Potential issue - GE controller may get stuck at transmit
CSCsf20856 Yes ASA should return FQDN on HTTP authentication (Socks)
CSCsf21159 Yes CRL checking fails when using Entrust CA on ASA
CSCsf21253 Yes Linux VPN Client does not pass traffic when client-update is enabled
CSCsf21488 Yes vpnfo client timeout causes standby to reload due to failover reset
CSCsf21675 Yes Change the password reset command string for CSC SSM
CSCsf21882 Yes Traceback in Thread: Dispatch Unit with QOS police configuration
CSCsf21932 Yes packet-tracer does not show access-list and object-group information
CSCsf22694 Yes ESMTP connection not terminated with malformed mail from address
CSCsf23145 Yes Unable to complete large uploads through VPN if packet loss occurs
CSCsf23672 Yes Traceback in garbage collector with SIP inspection configured
CSCsf24173 Yes IPv6: Fixup FTP is not working with IPv6
CSCsf24272 Yes IPv6: ACL corruption with service object-group
CSCsf24409 Yes User lockout functionality for telnet to box not working in multimode
CSCsf24901 Yes WebVPN returns a blank page with error HTTP/1.1 302 Moved Temporarily
CSCsf25601 Yes OWA2003 SP2 with hotfix Support Required
CSCsf25691 Yes Authentication not happening with Openldap server
CSCsf25963 Yes WebVPN OWA 2003 404 error while inbox is loading Premium Client
CSCsf28690 Yes L2TP/IPsec ASA rejects clients certificate
CSCsf29064 Yes Management SSH Connections denied - waiting on AAA srv reply
CSCsf29437 Yes Output for show failover state command needs improvement
CSCsf30454 Yes Crash in fover_parse due to SNMP during failover replication
CSCsf31731 Yes First IPv6 connection to the box fails, subsequent connections pass
CSCsf31767 Yes comma cannot be used in Subject DN in certificate parameters of ASA
CSCsf32319 Yes Unable to pass traffic between contexts using unique MACs
CSCsf96488 Yes Need stack trace capability to identify the session disconnection flow
CSCsf97902 Yes HTTP Inspect regex match of Request header will not match Header-Type
CSCsf98271 Yes traceback in dns_cache_timer or dns_process using clientless browsing
CSCsf98572 Yes Webvpn prompt for SecureID pin shows in clear text
CSCsf98804 Yes Wrong TCP sequence numbers in ICMP Unreachable when sent through ASA
CSCsf99289 Yes Traceback in Thread Name: aaa
CSCsf99335 Yes Traceback in Thread Name: IKE Daemon and Checkheaps memory corruption
CSCsf99833 Yes Traceback in fover_FSM_thread w/deb fover switch and stateful link down
CSCsf99945 Yes Remove FWSM specific 'show pc ....' cli
CSCsg00066 Yes Traceback in accept/http with ASDM 'clear configure crypto dynamic-map'
CSCsg00748 Yes Clear window-scale sack option in non-syn packets instead of dropping it
CSCsg00914 Yes OSPF neighbors don't form due to corrupted arp entry
CSCsg01099 Yes ASA: Files on flash show incorrect date when looked using a Windows PC
CSCsg03411 Yes WebVPN CIFS file delete when client try to rename
CSCsg04083 Yes TG cookie is not properly set before redirection to CSD installation
CSCsg04324 Yes VPN: high cpu usage with DHCP assigned IP addresses
CSCsg05160 Yes name command doesn't accept 128.0.0.0 and 192.0.0.0 as a network
CSCsg05422 Yes WebVPN OWA2003:page not displayed properly when the address book is used
CSCsg05519 Yes Port 443 is not available for IPSEC over TCP
CSCsg05587 Yes access-lists not downloaded from aaa server in some cases
CSCsg07077 Yes server-side DPD never sent out - connection dropped
CSCsg07425 Yes Need to update OpenSSL to 0.9.7k
CSCsg07720 Yes VPN Session DB: Potential stale point access in SESS_ACTIVE_REC
CSCsg08629 Yes webvpn customization title..help for style and text reversed
CSCsg08725 Yes Traceback: Thread Name: Dispatch Unit when timeout TCP keepalive message
CSCsg08799 Yes Traceback in Dispatch Unit and assertion flow->vpn_handle == NULL
CSCsg08833 Yes CSC may failover with syslog 323006 when 'dir disk1:/' executed
CSCsg09045 Yes URL redirect not working
CSCsg10386 Yes Webvpn not using custom text color for conection error dialog
CSCsg10605 Yes ASA: TCP normalizer spoofs an ACK with all zeroes src MAC address
CSCsg10950 Yes SIP registration using Camelot fails with inspect enabled
CSCsg11701 Yes WebVPN: Java Security exception: SHA1 digest error-> Java applet
CSCsg11706 Yes Unable to reconnect ssl/vpn when DPD keepalive expires
CSCsg11817 Yes Disable Back button in denied access page
CSCsg11957 Yes CSC cutting link speed by 60%, and download speeds are very slow.
CSCsg13717 Yes snmpwalk on CISCO-IPSEC-FLOW-MONITOR-MIB returns OIDs out of order
CSCsg14238 Yes Remove invalid commands from 5505 interface configuration
CSCsg14743 Yes TCP connections through L2TP/IPSEC not routable with route...tunneled
CSCsg15224 Yes WebVPN: Java applet fails to load
CSCsg16888 Yes VPNLB: HTTP to HTTPS redirect does not work after re-enabling
CSCsg17150 Yes Traceback in Thread Name: Dispatch Unit with Large Multicast Packets
CSCsg17709 Yes Inspect information not displayed in packet-tracer output
CSCsg17712 Yes AAA: Auth-Proxy session expired when using multiple connections
CSCsg18637 Yes Unable to telnet to more than one IPv6 addr on interface
CSCsg20027 Yes LDAP msRadiusFramedIPAddress doesn't assign IP in 7.2.x, OK in 7.1.x
CSCsg20301 Yes Originate-Only/Answer-Only data being dropped
CSCsg20773 Yes FIPS self test failure on new image upgrade
CSCsg21230 Yes EASTERN is hardcoded as SMTP date timezone
CSCsg21242 Yes ASA: Outbound ESP blocked by VPN-Filter when using Originate-Only
CSCsg21515 Yes Traceback in Thread Name: Dispatch Unit when enabling Webvpn
CSCsg21527 Yes FOVER: Traceback in Thread Name: fover_FSM_thread when booting up
CSCsg23113 Yes WebVPN: java.lang.ClassFormatError: Truncated class file
CSCsg23233 Yes VPN: 'show isa sa' may cause traceback in Thread Name: telnet/ci
CSCsg23270 Yes Traceback in Thread Name: telnet/ci with 'show local | grep 1.1.1.1\'
CSCsg23473 Yes ASA 7.0 ssh process vulnerable to CRC32 compensation DOS attack
CSCsg24602 Yes Malformed LDAP AD debug message
CSCsg25616 Yes ASA put PATed src port in ICMP (type3, code4)
CSCsg27124 Yes PIX 7.x does not allow RST pkt to pass from srv to client after failover
CSCsg27173 Yes WebVPN: Linux/Mac Location Criteria fails when Home Page is Configured
CSCsg27896 Yes SDI Cross-Realm authentication does not work
CSCsg29839 Yes Reply/Forward does not work with Domino Web Access and WEBVPN
CSCsg29988 Yes WebVPN: Java - java.lang.ClassNotFoundException: vminitializer.VMinitial
CSCsg30214 Yes ISAKMP threshold value in primary and secondary not the same
CSCsg30885 Yes Traceback: Thread Name: emweb/https and assert count <= payload failed
CSCsg31458 Yes PKI: cannot enter url with more than one '?'
CSCsg31633 Yes no ipsec-udp-port gives error type return through HTTPS
CSCsg31948 Yes Trace back in Thread Name: snmp (Old pc 0x009fa5a0 ebp 0x0202cfcc)
CSCsg31956 Yes VPN: Traceback in Thread Name: IKE Daemon
CSCsg32519 Yes Traceback in Thread Name: RIP Router
CSCsg34819 Yes Traceback in ssh thread after ssh timeout expires
CSCsg35215 Yes Syslog server down causes ICMP flood if ICMP is denied at interface
CSCsg35721 Yes Traceback in Thread Name: netfs_thread_init when auth with Kerberos
CSCsg35747 Yes ERROR: Failed to find ldap context after clear config all entered
CSCsg39502 Yes ASA 7.0.6 Traceback in tmatch compile
CSCsg39762 Yes 5510 show ver missleadingly indicates backplane FE as Not license
CSCsg40572 Yes Traceback in Thread Name: IKE Daemon
CSCsg40894 Yes ASA s/w crash due to memory mem_get_owner
CSCsg41593 Yes If 2 DHCP servers for VPN clients, failover for DHCP not successful
CSCsg43075 Yes VPN external group-policy timeout can cause various issues
CSCsg43077 Yes L2TP_IPSEC - VPN filters in group-policy matches udp 1701 l2tp traffic
CSCsg43384 Yes L2TP/IPSec - User filters configured using vpn-filter attr not applied
CSCsg43844 Yes In failover pair standby ASA used memory is higher than in active
CSCsg44868 Yes Same user in ACS and LOCAL database of aaa authorization causes error
CSCsg44875 Yes TACACS+ accounting records do not include port number
CSCsg46536 Yes alSslStatsActiveSessions from ALTIGA-SSL-STATS-MIB returns bad values
CSCsg48691 Yes WebVPN: Java applets failing thru the rewriter
CSCsg48881 Yes MCAST: improve direct connect multicast performance
CSCsg48997 Yes RST-ACK sent by service resetoutbound uses wrong sequence number
CSCsg49205 Yes Re-writing of SIP on-hold invite fails without a translation for 0.0.0.0
CSCsg49473 Yes The url-server stats contain counter discrepancies
CSCsg49497 Yes Do not trust Content-Type when forcing no-cache
CSCsg49825 Yes Traceback at snp_fp_frag_v4 (Old pc 0x00218bc7 ebp 0x01853738)
CSCsg50453 Yes LDAP Authent setup crashing ASA ldap_client:ldap_client_scope_get+177
CSCsg50757 Yes Memory corruption of dispatch_ctxt_t in checkheaps
CSCsg51932 Yes ISAKMP Phase 2 failure when NAT with NAT-T
CSCsg52108 Yes The uauth timeout is not enforced via TACACS+
CSCsg52277 Yes Certain SMTP messages cannot be sent through ASA with 'inspect esmtp' on
CSCsg52606 Yes RSA signature forgery vulnerability in SSL code
CSCsg52749 Yes AAA:realm string has a unique session-id suffixed to it
CSCsg53569 Yes PIX-ASA: state-checking not compliant to H225 standards
CSCsg58837 Yes ASA crash in Dispatch Unit during configuration replication
CSCsg60257 Yes SIP inspect leading to unexpected Deny with no connection impacting BHCC
CSCsg62775 Yes RAS seeing incorrect H.323 state transition RCF-> GRQ
CSCsg63037 Yes Command rejected for single digit vlan number
CSCsg63297 Yes CPU hog when update large object group in policy nat
CSCsg64280 Yes FO: crypto ca cert map not replicated until after trustpoint match cmd
CSCsg64743 Yes VPN: Ambiguity with isakmp keepalive command
CSCsg65794 Yes WebVPN OWA 2003 Cannot save large files to disk with Save Target as...
CSCsg67322 Yes WebVPN: DFS Failure to open folders on a W2K server
CSCsg68430 Yes The clear arp <int> option is missing from 7.2 docs and help
CSCsg69270 Yes 717 - 72 byte blocks of mem leaked: _ber_memalloc_x+66 after vpn sys tst
CSCsg70099 Yes FIPS: PRNG not used for async/no_pend rand requests
CSCsg71008 Yes AAA: Kerberos cut-thru proxy auth doesnt work in more than one context
CSCsg71789 Yes FO:SVC DL ACL's are incorrect after failover to stdby- uses no/wrong ACL
CSCsg73147 Yes ASA crashes on codenomicon TLS suite
CSCsg76664 Yes System out-of-block with 2700 active WebVPN sessions
CSCsg77799 Yes ASA not forwarding multicast traffic with bidirectional RP

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PIX/ASA 7.2(2)リリース

v7.2に関しては、約半年ぶりのバージョンアップ。

以下、リリースノートより、New FeturesとImportant Notesを抜粋。



New Features

This section lists the new features for Version 7.2(2). All new features are supported in ASDM 5.2(2).

Password Reset

Version 7.2(2) adds a new command, the hw-module module <slot#> password-reset command, to reset the password on the AIP-SSM and CSC-SSM modules, it resets the password of user 'cisco' back to the default value 'cisco'.

HTTP(S) Authentication Challenge Flexible Configuration

In Version 7.2(2), the adaptive security appliance authenticates HTTP network connections using basic HTTP authentication and authenticates HTTPS connections by generating similar custom login windows. This is the same exact behavior that was present in Version 7.1 and prior. You can use basic HTTP authentication if:

You do not want the adaptive security appliance to open listening ports

You use NAT on a router and you do not want to create a translation rule for the web page served by the adaptive security appliance

Basic HTTP authentication might work better with your network. For example non-browser applications, like when a URL is embedded in email, might be more compatible with basic authentication.

The new aaa authentication listener command enables the adaptive security appliance to authenticate web pages and select the form based redirection approach that is currently used in Version 7.2(1). In the absence of this new command, Version 7.1 authentication method is used.


Note By default the the aaa authentication listener command is not present in the configuration, making Version 7.1 aaa behavior the default for 7.2(2). However, when a Version 7.2(1) configuration is upgraded to Version 7.2(2), the appropriate aaa authentication listener commands are added to the configuration so that the aaa behavior will not be changed by the upgrade.


In Versions 7.1 and prior, the adaptive security appliance authenticated HTTP and HTTPS network connections by interacting with the client in a transparent manner, by using basic authentication for HTTP connections and by generating similar custom login windows for HTTPS connections. After successfully authenticating the client, the adaptive security appliance would connect through to the intended server. This approach did not require listening ports to be opened on the adaptive security appliance interfaces.

In Version 7.2(1), this functionality was replaced by a form based authentication approach where HTTP and HTTPS connections are redirected to authentication pages that are served from the adaptive security appliance. After successful authentication, the browser is again redirected to the originally-intended URL. This was done to provide:

More graceful support authentication challenge processing

An identical authentication experience for http and https users

A persistent logon/logoff URL for network users This approach does require listening ports to be opened on the adaptive security appliance on each interface on which aaa authentication was enabled.

 

Important Notes

This section lists important notes related to Version 7.2(2).

Maximum Number of VLANs

The maximum number of VLANs for the Security Plus license on the ASA 5505 adaptive security appliance was increased from 5 (3 fully functional; 1 failover; one restricted to a backup interface) to 20 fully functional interfaces. In addition, the number of trunk ports was increased from 1 to 8. Now there are 20 fully functional interfaces, you do not need to use the backup interface command to cripple a backup ISP interface; you can use a fully-functional interface for it. The backup interface command is still useful for an Easy VPN configuration.

VLAN limits were also increased for the ASA 5510 adaptive security appliance (from 10 to 50 for the Base license, and from 25 to 100 for the Security Plus license), the ASA 5520 adaptive security appliance (from 100 to 150), the ASA 5550 adaptive security appliance (from 200 to 250).

For more information, see the Configuring Switch Ports and VLAN Interfaces for the Cisco ASA 5505 Adaptive Security Appliance chapter in the Cisco Security Appliance Command Line Configuration Guide.

virtual http Command

The virtual http command has been restored. This is needed with basic authentication when you have cascading authentication requests.

FIPS 140-2

Version 7.2(2) has been submitted for FIPS 140 Level 2 validation.

Features not Supported in Version 7.2(2)

The PPTP feature is not supported in Version 7.2(2).

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DKIM関連記事 Challenges in Anti-Spam Efforts

www.cisco.comより、DKIM関連記事。

Challenges in Anti-Spam Efforts by Dave Crocker, Brandenburg InternetWorking

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【ニュース】ITpro「送信ドメイン認証『DKIM』の標準化は順調,来年半ばにはRFCに」---Eric Allman氏

 「DKIM(DomainKeys Identified Mail)の標準化作業は予想以上に順調に進んでいる。DKIMのコア・テクノロジについては,2007年半ば,早ければ第1四半期中にRFC (Request for Comments)になるだろう」――。米SendmailのChief Science Officerであり,DKIM仕様策定の中心人物の一人であるEric Allman氏は11月22日,ITproの取材に対して,DKIMの現状などを語った。

ニュース記事

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CSC-SSM レピュテーションサービスによるスパム検出時に返されるSMTP 応答コードの初期値

 初期値では、RBL+にマッチした場合はSMTP応答コード550を、QILにマッチした場合は450を返す。

 SMTPの応答コードは4xxは一時的なエラーを表し、5xxは恒常的なエラーを表す。
 RBL+にマッチした場合、550が返されるため、恒常的に接続できないことを表し、QILにマッチした場合は、450が返されるため、一時的に接続できないことを表す。

 これらの値は、ユーザにより400から599に設定変更することも可能である。

  SMTP応答コード
   550= Requested action not taken: mailbox unavailable
   450= Requested mail action not taken: mailbox unavailable

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CSC-SSM 日本語の対応状況(SMTP)

CSC-SSMでの日本語の対応状況(SMTP)に関しては、以下の通り。
社外向け免責条項文 = 日本語に対応。

ウイルススキャン時の管理者、送信者、受信者宛の警告メール本文 = 日本語に対応。

同ウイルススキャン時のインライン警告メッセージ = 日本語に対応。

スパム検出時にメールSubjectに加えられるメッセージ = 英語のみ。日本語に非対応。

メールメッセージの主題、本文によるコンテンツフィルタリング = 日本語に対応。

添付ファイル名によるコンテンツフィルタリング = 英語のみ。日本語に非対応。

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ASDM v5.2 Real-time log Viewerの変更点Creat RuleとShow Rule(syslog ID 106100と106023 )

 ASDM v5.2よりReal-time log Viewerで、Creat RuleとShow Ruleボタンが追加された。
 これは、syslog ID 106100と106023に対応し、Creat Ruleボタンをクリックすることで、ルール(ACL)を追加したり、Show Ruleボタンをクリックすることで、ルール(ACL)を確認することができる。
 それぞれのsyslog IDは、106023はIP パケットが ACL によって拒否されたことを意味し、106100はIPパケットが、logオプションが設定された(一致した場合にlogとして記録されるように設定された)ACLに一致したこと意味する。
 例えば、ユーザがReal-time log Viewerを用いてsyslog ID 106023のlogを確認し、本来許可されるべきIPパケットが拒否されていることを発見した場合、その該当するlogをクリックし、Creat Ruleボタンをクリックすることでその条件にあったルール(ACL)を即座に追加することができる。

 また、英語のみの対応となるが、該当のlogをクリックすることで、syslogメッセージマニュアルを参照することなく、logの説明やとるべき措置、詳細情報を確認することができる。


その他Syslog Color Settingの追加された。
Syslog_color_settings_1

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CSC-SSMのv6.1でのSMTPのスパム対策(レピュテーションサービスの利用)

 CSC-SSMのV6.1よりSMTPのスパム対策は、コンテンツスキャニング(メールヘッダもしくは、メールヘッダと本文をチェックする方法。IMSSなどで利用される方法)に加えて、レピュテーションサービスを利用する機能が搭載されている。(v6.0には、レピュテーションサービスを利用する機能は無い。)

 レピュテーションサービスは、基本的にIPアドレスによるフィルタリング技術であり、信用できないIPアドレスをデータベース化し、そのデータベースを参照することでスパム判定を行う。

 CSC-SSMでは、Approved IP Address(認定IPアドレス)という項目があり、これにより送信元のメールサーバのIPアドレス単位で、レピュテーションサービスによるスパムフィルタリングをバイパスすることも可能である。

 先述の通り、レピュテーションサービスは、IPアドレスによるフィルタリング技術であるため、コンテンツスキャニングのようにメール本文やメールヘッダ、送信者や受信者のアドレスなどを用いてバイパスすることはできない。
 CSC-SSMのスパムフィルタリングでは、レピュテーションサービスによるフィルタリングが先に動作し、その後、コンテンツスキャニングが動作する。そのため、スパムフィルタリングとして、レピュテーションサービスによるフィルタリングとコンテンツスキャニングを併用する場合において、メール本文やメールヘッダ、送信者や受信者に基づくスパムフィルタリングそのもののバイパスができない。

 この点、例えばCSC-SSMを用いずに、sendmailやpostfixといったメールサーバで直接レピュテーションサービスが提供するデータベースをRBLとして登録する方法であれば、例えば、postfixであればcheck_recipient_accessなどによって、受信者によるフィルタリングのバイパスも可能である。
http://esupport.trendmicro.co.jp/supportjp/viewxml.do?ContentID=jp-212913



 ところで、Barracuda Networksの製品ではどのような動作をするか。
 Version3.3 Barracuda Networks SpamFirewall Administrator's Guideによると、初期値でBarracuda独自のブラックリストとspamhaus.org のブラックリストを利用するようである。
 また、その他、様々なフィルタリング(IPアドレス以外に、ドメイン、サブドメイン、送信者メールアドレス、受信者メールアドレスなど)が用意されており、受信者メールアドレスでのフィルタリングも可能であるが、こちらもやはりブラックリストはバイパスしないようである。

Version3.3 Barracuda Networks SpamFirewall Administrator's Guide
Recipient Email Address Filters
Allowed Email Addressesの項より引用。

Recipients added to this list will never have their incoming messages scored for spam, but these messages still go through virus scanning and attachment filters. Whitelisted recipients can have their incoming messages blocked if the sender’s IP address, domain, or email address is blacklisted.


以下、CSC-SSM V6.1日本語マニュアルより引用。
RBL+ および QIL について

Realtime Blackhole List(RBL+)は、20 億もの IP アドレスのレピュテーションを追跡するデータベースです。スパムメッセージの配信に常に関連付けられていた IP アドレスはデータベースに追加され、削除されることはごくまれです。Quick IP Lookup(QIL)リストは、IP アドレスのレピュテーションを追跡するもう 1 つのデータベースですが、QIL を使用すると IP の追加と削除がさらに頻繁に行われます(そのため最新の状態にあるとみなされます)。

IP アドレスがいずれかのデータベースで検出されると、NRS は接続に「マーク付け」し、そのような IP に対して選択したアクションを CSC SSM が実行します。

たとえば、MTA がハイジャックされたか、またはオープン リレーが攻撃されてサードパーティに使用され、スパムメッセージを配信したとします。システム管理者が数時間後または数日後に攻撃を発見して修正しましたが、その間にも数百万のスパムメッセージがサーバによって送信されてしまい、新たに送信され続けています。数件のスパムのレポートの後に、感染した IP が QIL データベースに追加されますが、レポートが消えてゆくと(管理者が MTA の制御を回復すると)削除されます。一方、IP アドレスが RBL+ に追加されるまでに時間がかかるので、問題が一時的でしかない(しかし数百万ものスパムの原因となりうる)多くの IP は RBL+ によってフラグを立てられることはありません。しかし、RBL+ にいったん追加されると、IP アドレスをデータベースから削除することはさらに難しくなります。RBL+ 内の IP が常習的なスパム MTA であるという確度が高いからです。

いずれのサービスも、メッセージが MTA に配信される前にメッセージに適用され、複雑なヒューリスティックと分析を処理するオーバーヘッドから MTA を開放し、同時にメールをルーティングします。

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