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Cisco Security Monitoring, Analysis and Response System

Release Notes for Cisco Security MARS Appliance 6.0.6


Table Of Contents

Release Notes for Cisco Security MARS Appliance 6.0.6


Supported Hardware

New Features

Miscellaneous Changes and Enhancements

New Vendor Signatures

Upgrade Instructions

Important Upgrade Notes

General Notes

Upgrade to 6.0.6

Upgrade to 6.0.5

Upgrade to 6.0.4

Upgrade to 6.0.3

Upgrade to 6.0.2

Upgrade to 6.0.1

Upgrade to 5.3.6

Upgrade to 4.3.6

Upgrade Path Matrix

Downloading the Upgrade Package from CCO

Documentation Errata

Important Notes


Open Caveats for Supporting Devices

Open Caveats— Release 6.0.6

Resolved Caveats —Release 6.0.6

Resolved Caveats —Releases Prior to 6.0.6

Product Documentation

Obtaining Documentation, Obtaining Support, and Security Guidelines

Release Notes for Cisco Security MARS Appliance 6.0.6

Published: January 20, 2009

Note We sometimes update the printed and electronic documentation after original publication. Therefore, you should review the documentation on Cisco.com for any updates.

These release notes are for use with the Cisco Security Monitoring, Analysis, and Response System (MARS), Release 6.0.6, running on any supported MARS Appliance model listed in Supported Hardware.

This chapter contains the following topics:


Supported Hardware

New Features

Upgrade Instructions

Documentation Errata

Important Notes


Product Documentation

Obtaining Documentation, Obtaining Support, and Security Guidelines


Release 6.0.6 is now available as an upgrade of 6.0.5 of your software release in support of the MARS Appliance models as identified in Supported Hardware. Registered SMARTnet users can obtain release 6.0.6 from the Cisco support website at the following URL:
Open the page and then click the Download Software link in the Support box on the right side of the MARS product home page.

Supported Hardware

Release 6.0.6 supports the following Cisco Security MARS Appliance models:

Local Controller Appliances: 2nd Generation

Cisco Security MARS 25R (CS-MARS-25R-K9)

Cisco Security MARS 25 (CS-MARS-25-K9)

Cisco Security MARS 55 (CS-MARS-55-K9)

Cisco Security MARS 110R (CS-MARS-110R-K9)

Cisco Security MARS 110RF (CS-MARS-110RF-K9)

Cisco Security MARS 110 (CS-MARS-110-K9)

Cisco Security MARS 210 (CS-MARS-210-K9)

Local Controller Appliances: 1st Generation

Cisco Security MARS 20R (CS-MARS-20R-K9) as a MARS 20

Cisco Security MARS 20 (CS-MARS-20-K9)

Cisco Security MARS 50 (CS-MARS-50-K9)

Cisco Security MARS 100e (CS-MARS-100E-K9) as a MARS 100

Cisco Security MARS 100 (CS-MARS-100-K9)

Cisco Security MARS 200 (CS-MARS-200-K9)

Global Controller Appliances: 2nd Generation

Cisco Security MARS GC2R (CS-MARS-GC2R-K9)

Cisco Security MARS GC2 (CS-MARS-GC2-K9)

Global Controller Appliances: 1st Generation

Cisco Security MARS GCm (CS-MARS-GCM-K9) as a MARS GC

Cisco Security MARS GC (CS-MARS-GC-K9)

New Features

In addition to resolved caveats, this release includes the following changes and enhancements:

Miscellaneous Changes and Enhancements

New Vendor Signatures

Miscellaneous Changes and Enhancements

The following changes and enhancements exist in MARS, Release 6.0.6:

SNMP v. 3.0 Support—Leveraging a secure communication protocol between MARS and Cisco security enforcement devices, customers can be assured that they are securely mitigating attacks and configuring and managing devices. SNMPv3 support enables the following features:

Per-device SNMPv3 credentials are used for manual discovery and layer 2 mitigation.

Note For those devices that support SNMPv3, you can now configure SNMP credentials in either the version 1 or version 3 format. For older devices, you will not see the new configuration options.

Support for SNMPv3 credentials for an entire network or range of IP addresses. The MARS autodiscovery feature clones the credentials for an autodiscovered device on that network.

Monitor the health of supported devices via SNMPv3 via the resource utilization charts that you can add to the Summary > My Reports subtab.

Table 1 identifies the Cisco devices and level of SNMPv3 support provided by MARS:

Table 1 Level of SNMPv3 Support by Cisco Device Type 

Device Name

Cisco Switch IOS





Cisco Switch CatOS




Cisco Router IOS





Cisco WLAN Controller


Cisco ASA


Cisco PIX


Internet Explorer 8 Support—MARS supports Microsoft Internet Explorer 8 without requiring compatibility mode. Due to the nature of security revisions in Internet Explorer, you may find that you must authenticate more frequently to the MARS appliance.

Improved Device Support—MARS now includes backward compatible support for ASA 8.0.5 and IOS 15.0(1)M. Backward compatible support means that any events that MARS parsed for ASA 8.0.4 or IOS 12.4 (11) T2 have been verified to parse in the corresponding newer release.

New Vendor Signatures

The following table describes the most recent signatures supported for each product or technology:

Tip For full details on supported devices and versions, see Supported and Interoperable Devices and Software for Cisco Security MARS Local Controller 6.0.x.

Revised in 6.0.6
Signature Version Supported
Intrusion Prevention and Detection Signatures


Cisco IDS 4.0
Cisco IPS 5.x
Cisco IPS 6.x
Cisco IPS 7.x

Current through S454 signature release. Current as of December 8, 2009.


Cisco ASA

Current as of December 8, 2009.


Cisco IOS 12.2/12.4

Current as of December 8, 2009.


Snort NIDS 2.8

Current through the December 8, 2009 signature release.
Latest signature mapped: 16313.


ISS RealSecure Network Sensor 6.5 and 7.0, and
ISS RealSecure Server Sensor 6.5 and 7.0

XPU 29.120
Release date: December 8, 2009


McAfee IntruShield 4.1

Release date: December 8, 2009


McAfee Entercept HIDS 2.5, 4.0, 6.x

Current through the December 7, 2009 signature release.


CheckPoint Application Intelligence
(VPN-1 NG with Application Intelligence R65)

Current through the December 9, 2009 signature release.


Netscreen IDP 2.1, 3.0, 3.1, 4.0, 4.1

Signature version: 4.0
Release date: December 10, 2009

No. EOS.

Symantec NIDS, v 4.0

Signature package: 95
Release date: June 12, 2008


Enterasys Dragon 6.x, 7.x

Current through the December 8, 2009 signature release.

No. EOS.

Symantec Manhunt 3.x
(See Symantec NIDS, v 4.0.) 3.4.3 Update 59

3.4.3 Update 59
Current through the May 24, 2007 signature release.

Vulnerability Scanner Signatures


Qualys Guard ANY

Current through the December 10, 2009 signature release.


E-Eye, Retina Scanner Vulnerability Software, version 5.61

Current through the December 10, 2009 signature release.


Foundstone, version ANY

Current through the December 8, 2009 signature release.


Common Vulnerabilities and Exposures (CVE) Database

Current with the December 10, 2009 definition update.

Miscellaneous Support


Oracle 11g

Support for new AUDIT_ACTIONS.

1 eEye REM 1.0 is supported in 4.2.x.

Upgrade Instructions

The MARS upgrade packages are the primary vehicle for major, minor, and patch software releases. As administrator of the MARS Appliance, you should check the upgrade site regularly for upgrades. In addition to addressing high-priority caveats, upgrade packages update system inspection rules, event types, and provide the most recent signature support.

For detailed instructions on planning and performing an upgrade or install, refer to "Checklist for Upgrading the Appliance Software" in the Cisco Security MARS Initial Configuration and Upgrade Guide.

Important Upgrade Notes

To ensure that the upgrade from earlier releases is trouble free, this section contains the notes provided in previous releases according the release number. Please refer to the notes that pertain to the release you are upgrading from and any releases following that one.

General Notes

The following general notes apply to this release:

When downloading software packages from CCO to MARS, ensure that your credentials (username or password) do not include the ampersand (&) character. The credential will be truncated before being passed to the authentication module, which results in an error message about invalid user credentials.

The CS-MARS 110R running the FIPS-compliant card cannot be managed by a Global Controller.

The MARS Appliance performs a file system consistency check (fsck) on all disks when either of the following conditions is met:

The system has not been rebooted during the past 180 days.

The system has been rebooted 30 times.

The fsck operation takes a long time to complete, which can result in significant unplanned downtime when rebooting the system after meeting a condition above. For example, a MARS 50 appliance can take up to 90 minutes to perform the operation.

Upgrade to 6.0.6

No important notes exist for the 6.0.6 upgrade.

Upgrade to 6.0.5

The 6.0.5 release is a general bug fix and signature update release for all MARS appliance models. However, it offers new functionality for an existing CS-MARS 110R when you order and install a FIPS-compliant PCI card. Once installed, you can configure FIPS-specific features within MARS. For more information, see the CS-MARS FIPS PCI CARD Quick Install document.

Upgrade to 6.0.4

No important notes exist for the 6.0.4 upgrade.

Upgrade to 6.0.3

No important notes exist for the 6.0.3 upgrade.

Upgrade to 6.0.2

No important notes exist for the 6.0.2 upgrade.

Upgrade to 6.0.1

The upgrade process to 6.0.1 differs based on the release you are upgrading from. If you are upgrading a 5.x release, you can upgrade to 6.0.1 if you are running 5.3.6. The upgrade from 5.3.6 to 6.0.1 takes several hours, as it also upgrades the Oracle database running on the appliance. If you are running an earlier 5.x release, you must first upgrade to 5.3.6 (see Upgrade to 5.3.6 for details).

However, if you are upgrading a 4.x release, you must migrate the system instead of upgrading. To migrate from a 4.x, you must follow the step-by-step instructions specified in the Migrating Data from Cisco Security MARS 4.x to 6.0.1.

Note When upgrading a "restricted" model of MARS appliance (20R, 100e, or GCm) to MARS Software release 6.0.1, all limits enforced by the restricted model are ignored. The "restricted" models perform as unrestricted models (20, 100, or GC) once upgraded to release 6.0.1.

Upgrade to 5.3.6

For notes that are specific to the upgrade to the 5.3.6 release, as well as all previous 5.x releases, see the Release Notes for Cisco Security MARS Appliance 5.3.6.

Upgrade to 4.3.6

For notes that are specific to the upgrade to the 4.3.6 release, as well as all previous 4.x releases, see the Release Notes for Cisco Security MARS Appliance 4.3.6.

Upgrade Path Matrix

When upgrading from one software release to another, a prerequisite release is always required. This prerequisite release is the minimum level required to be running on the appliance before you can upgrade to the most recent release. Table 2 identifies the upgrade path that you must follow to reach the minimum level required to upgrade to current release.

Table 2 Upgrade Path Matrix 

From Release
Upgrade To
Upgrade Package



Migration required. See Migrating Data from Cisco Security MARS 4.x to 6.0.1




6.0.1 (3066) or 6.0.1 (3070)










6.0.5 no FIPS support


6.0.5 with FIPS support





Downloading the Upgrade Package from CCO

Upgrade images and supporting software are found on the CCO software download pages dedicated to MARS. You can access these pages at the following URLs, assuming you have a valid CCO account and that you have registered your SMARTnet contract number for your MARS Appliance

Top-level page:


And then click the Download Software link in the Support box on the right side of the MARS product home page.

Result: The Download Software page loads.

From the Download Software page, select one of the following options:

CS-MARS IPS Signature Updates Archives

CS-MARS IPS Signature Updates

CS-MARS Patches and Utilities (supplementary files)

CS-MARS Recovery Software

CS-MARS Upgrade Packages

Note If you are upgrading from a release earlier than those posted on CCO, please contact Cisco support for information on obtaining the required images. Do not attempt to skip releases along the upgrade path.

For information on obtaining a CCO account, see the following URL:


Documentation Errata

CSCsl14244. User guide does not discuss role of Nessus in the MARS system.

To determine whether specific incidents are false positives, MARS uses Nessus 2.x GPL plug-ins and custom scripts mapped to specific MARS event types. MARS does not use Nessus to perform vulnerability assessments or related reporting.

MARS uses Nessus as one component in determining false positives. When a host resides on a network listed under "Networks for Dynamic Vulnerability Scanning", then MARS uses Nessus to help ascertain whether an attack targeting that host was likely to be successful. When an event does not have corresponding Nessus Attack Scripting Language (NASL) script, MARS uses nmap OS fingerprinting to determine the destination operating system type, and uses nmap-found-OS to match known operating systems affected by the attack.

CSCsk77546. Discovery Device with SSH 512 module not supported.

The OpenSSH client used by MARS does not support modulus sizes smaller than 768. For example, you cannot discover a device using a SSH login that has 512-byte key.

Important Notes

The following notes apply to the MARS 6.0.x releases:

CSCsu50839—Report Result Page saves the previous "Other views" selection

If you change the "Other Views" options in the report result page, the changes persist for that report and for that browser. When the report results are viewed later, the browser shows the saved options but the results displayed are always the default options results.

To avoid this issue, always click Display Report to view a scheduled report's results.

If the client system used to access the MARS GUI is not on the same side of the NAT boundary as the a MARS appliance and the Security Manager server, you can perform policy lookup in read-only mode. However, you cannot start the Security Manager client from the read-only policy lookup table to modify matching policies. The Security Manager client must be on the same side of the NAT as the MARS appliance and the Security Manager server if you want to modify the matching policy from MARS. This restriction is also true if you want to query MARS events from policies.

The performance of the Summary Page degrades when too many reports are added under My Reports. The smaller the number of reports under My Reports, the faster the Summary page loads. To ensure adequate performance, limit the number of reports to 6. This issue is partially described in CSCse18865.

Do not to use DISTINCT or SAME in queries, and do not run multi-line queries in Release x.3.4 through 6.0.1. If you run such a query, the system time outs after 20 minutes without returning any results. The message "Timeout Occurred" appears instead. You can use DISTINCT and SAME in a Query to create a rule with the Query interface.

For Symantec AntiVirus, the Symantec agent hostname (AV client computer name) appears in the "Reported User" column of the event data. Therefore, you can define a query, report or rule related to this agent based on the "Reported User" value.interface. For

The False Positive and Query pages (multi-column result format) have changed. You can now query on firing events that triggered false positives within a time interval. Such queries will render events that did not appear on the False Positive page. To ensure performance, the False Positive page only displays false positives from the most recent 10,000 firing events. To view additional false positives, you must perform a query.

The following notes describe new behavior based on the resolution of specific caveats. Be sure to check the upgrade notes for each release for important notes on data migration.

Reference Number

CSCsc50636, CSCsc50652

Issues: Back-end IPS process runs at 99% CPU when pulling large IP Logs The Back-end IPS process reaches 1GB in memory used when pulling IP Logs. The process names depending on the version on MARS that is running:

In release 4.2.1 and earlier, the process names are pnids50_srv and pnids40_srv.

In release 4.2.2 and later, the process is named csips.

These related issues, are specific to pulling IP logs from Cisco IDS/ IPS devices. The symptom is that the Back-end IPS service consumes the system resources on the MARS Appliance. As an improper configuration of the sensor can significantly degrade the sensor performance as well as that of MARS.

Workaround: Ensure that settings for IP log creation on the sensor limit the size of the IP log (in terms of number of bytes or number of packets captured). Also, verify that IP packet logging is enabled only for signatures of interest and not for all signatures. In addition, the following release-specific maximums are enforced:

In 4.2.1, a 100 file maximum is enforced for the log file queue when the MARS is configured to pull IP log files. Therefore, it may not pull every IP log file. In addition, the complete IP Log file may not be pulled, instead, data is pulled from the file starting 5 minutes before the alert was generated through the end of the file.

In 4.2.2, a 1,000 file maximum (up from 100 in 4.2.1) is enforced for the log file queue when the MARS is configured to pull IP log files. The complete IP Log file may not be pulled, instead, data is pulled from the file starting 1 minute (down from 5 minutes in 4.2.1) before the alert was generated through the end of the file. And last, 100KB is the maximum IP log size that can be pulled from a MARS Appliance.


Issue: Data computed or stored on a standalone MARS while in standalone mode will not be transferred to a Global Controller. Only data computed on an Local Controller that is currently monitored by a Global Controller will be pushed up.


Issue: After renaming a cloud, clicking the cloud again causes an error.

Workaround: Refresh the page before clicking a renamed cloud.


Issue: The free-form search may not work for the following devices:

Check Point Opsec NG FP3

Cisco CSA, 4.0

Cisco, IDS, 3.1 and 4.0

ISS, RealSecure, 6.5 and 7.0

Entercept Entercept, 2.5 and 4.0

IntruVert IntruShield, 1.5


Issue: The automatic time-out feature built into the GUI does not work when the Summary page is left open with automatic refresh selected.

Resolution: Please log out of the system when you are no longer using it.


This section describes the open and resolved caveats with respect to this release.

For your convenience in locating caveats in Cisco's Bug Toolkit, the caveat titles listed in this section are drawn directly from the Bug Toolkit database. These caveat titles are not intended to be read as complete sentences because the title field length is limited. In the caveat titles, some truncation of wording or punctuation may be necessary to provide the most complete and concise description. The only modifications made to these titles are as follows:

Commands are in boldface type.

Product names and acronyms may be standardized.

Spelling errors and typos may be corrected.

Note If you are a registered cisco.com user, view Bug Toolkit on cisco.com at the following website:
To become a registered cisco.com user, go to the following website:

This section contains the following topics:

Open Caveats for Supporting Devices

Open Caveats— Release 6.0.6

Resolved Caveats —Release 6.0.6

Resolved Caveats —Releases Prior to 6.0.6

Open Caveats for Supporting Devices

The following caveats affect this release and are part of supported devices or compatible products:

Reference Number
Cisco Security Manager


Policy lookup icon not shown if device is deleted from MARS


Policy lookup icon not shown for a device deleted and re-added to MARS


Minimum password length for Security Manager account in MARS


MARS query does not highlight rules inside any policy group named Local

Firewall Services Module


FWSM Syslog message FWSM-6-302013 with wrong Real and Mapped IP

Open Caveats— Release 6.0.6

The following caveats affect this release and are part of MARS.

Reference Number


Cleanup script for invalid /etc/qpage.conf entries


Unable to shutdown an interface


CSV-re import of CSA and Symantec agents unsuccessful


MARS Incident notification options are not configurable


pnrestore doesn't restore all of the system config


CS-MARS/CSM: Credentials change on CSM side not checked.


Incorrect handling of time range for rules that fire periodically.


Summary Page Graphs Spontaneously Change Displayed Size (w/ multi-head)


UI takes 99% CPU, hanging browser and slowing system while expanding all


Cloud toggle only works on first page of reporting devices


CS-Mars - unable to show L2 path when source and destination in same net


IPlanet Unknown Device Event Type Parsing Error


The time stamp shown by the pndbusage command is incorrect.


Unresolved symbol in Java build (though didnot stop building)


Occasionally corrupted event data enters into MARS database


Device resource monitor incorrectly samples 5 sec CPU instead of 5 min


Database table columns do not match with the archive file columns


keyword search query can't display big-5 encoding raw msg


provide encoding selection for adding agent to device/host


wrong values for current connections using CLI "show resource usage"


rule's keyword editor treats NOT as binary rather than unary


Devices should not be added to MARS if Discovery is unsuccessful


some syslog results in unknownDET with 'Activate'


Case Management: history does indicate change of ownership


CSM multiple hostname matches failed to return multiple hosts


Support pn_client_encoding table after schema change in Bootes


MARs says it can delete up to 500 at a time but only lets you delete 50.


User can input unsupported characters in AAA device name


pn_incident_log and pn_report_log should be archived


gui.sh dev build makes different JBOSS web.xml than make release


CS-MARS - Request to have the "ssldump" command in the MARS CLI.


CS-Mars does mitigate to the proper endpoint


The application hangs, while getting the results for a query.


Mismatch results between query and report (custom column)


Edit SW based Application device need submit twice


mars reboots w/o asking for confirmation after user clicked cfg update


The performace test kills all the process during the weekend run


Index needs to be removed for the pn_report_result table


L2 mitigation has problem finding path


For multiple context mode, inbound/outbound error reports are incorrect.


security hole happens if users close browsers without click logout


with 60% event rate capacity, query events ranked by time takes 20 min


Mismatch in results between query and report for All Matching Events


Mismatch between query and report results for source port ranking.


Report is not emailed because of Message exceeds maximum fixed size


Update reports when handling deletion of hosts


LC did not get added to GC so unable to generate syslogs.


CS-MARS Action filter doesn't work if not associated with incidents


Box may not be able to reboot after recovery, under certain conditions


Paging does not work for report right after adding it to a case.


scheduled discovery is scheduled at wrong time


Inline/Batch query not match on NAT connection report


Inline/Batch query: result mismatch on Matched Rule Ranking


Adding LC with version lower than 4.3.1 should version mismatch err


MARS failed to import 1000 hosts vulnerablilty information


pink error when listing devices while scalability script running


MARS: Isolated Networks in Topology due to 'ip unnumbered' Interface


GUI doesn't check duplicate agent ip address when adding application


MARS Layer 2 path and mitigation issues with IOS 12.3 and 12.4 version


rare crashing issue due to file system check/memory short


Loading hosts from seed file does not fill interface information on MARS


entire GUI stops working after adding a device with same name as MARS


Host name appears inconsistently on Incident Vector Topology


custom parser performance issue


4.3.5 eth1 IP address not migrated to 5.3.5


Actual Time For 'pnexp' Or 'pnimp' Is Much Higher Than Estimated


Anomaly baselines are not part of archive/restore data


MARS not showing the switches in L2 mitigation path consistently


Rawmsg retrieve Stop(from the GUI) does not stop backend immediately


Unable to edit Cisco Switch IOS event parser in 6.0.1 DSF feature.


MARS adding wrong device entry after adding ISS Provetia as ISS RS 7.0


MARS not printing the correct Layer 2 topology


CSM-MARS linkage is not working when AAA is configured as Authentication


Querying events filter by severity level not generating any reports


Unable to parse NAC 4.5


MARS 6.0.2 Issue with modifying user roles.


the deleted devices are still showing in the resource utilization report


MARS device support for Check Point NG FP3


User defined rule doesn't work for keyword with NOT condition


Cisco SNMP Traps with enterprise id 9 are parsed incorrectly


Unknown Device Event Type for ACS 4.2


CS-MARS Single Zone Report Showing Info from other Zones


Inactive rules becomes active after importing using DSF


Severity not evaluated/matched correctly for CSA and some IPS events


querying IPS events with prot:IP(SNMP traps) generates improper results


MARS - l2 path does not show stacked switches


Unable to update custom signature package with erroneous XML


wrong info on pop up while deleting a site on GC.


Older unsupported versions of checkpoint should not be supported in MARS


CS-MARS-6.0-Filtering on Red severity slow and Oracle process 100%


GC report with BTF site reference is always stays in progress.


ASA site report takes a few seconds to display even on a non-busy box


Invalid credential error if CCO passwd including URL special characters


DSF export/import feature for rules/report with sites is not working


MARS 6.0.x pulling of IDS 4.x sensors not working via rdep


CSM device causing query pink box


Custom column query with keyword doesn't return results


Cross launching from CSM causes LC / GC certificate issues


MARS: Oracle polling interval is ignored when connections are limited


MARS does not validate the date on the IPS certificate




Severity not evaluated/matched correctly for CSA events.


CS-MARS: IOS IPS Sig 5733 Maps to "WWW IIS Internet Printing Overflow"


Mars release 6.0.5 - Cat6k FWSM module discovery script failure


MARS : report hosts column displays H-X.X.X.X instead of the name


MARS: Will not start with large NAT/ACL tables


MARS: Windows Pull fails, Domain name is surrounded by single-quotes (')

Resolved Caveats —Release 6.0.6

The following customer found or previously release noted caveats have been resolved in this release.

Reference Number


Need to fix missing/mis-mapped IPS events in database


Invalid insp rule propagated from GC to LC even when rule ok on GC


MARS-210 stuck at cardinarlity calculation


When browser doesn't refresh, GUI cancels raw message retrival


CS-MARS: Need to keep rule id mapping in-sync after upgrade


MARS: pnparser's snmptrap thread is not listening


Importing larger than 2GB CF file causes issues w/ pnrestore


MARS 6.0.5 can only discover FWSM v4.0 in backward compatibility mode

Resolved Caveats —Releases Prior to 6.0.6

For the list of caveats resolved in releases prior to this one, see the following documents:


Product Documentation

For the complete list of documents supporting this release, see the release-specific document roadmap:

Cisco Secure MARS Documentation Guide and Warranty


Lists document set that supports the MARS release and summarizes contents of each document.

For general product information, see:


Obtaining Documentation, Obtaining Support, and Security Guidelines

For information on obtaining documentation, obtaining support, providing documentation feedback, security guidelines, and also recommended aliases and general Cisco documents, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:


Subscribe to the What's New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service and Cisco currently supports RSS Version 2.0.

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