- syslog-ng - lists.balabit.hu

patterndb license?
by Balazs Scheidler 01 Oct '10

01 Oct '10

Hi, I was wondering what kind of license should be applied to patterndb patterns. GPL doesn't really apply as it is not software. I was thinking about Creating Commons Attribution-ShareAlike license, which: * allows redistributions of the work with proper attribution * allows changes as long as the changes are available under the same license * allows commercial usage (e.g. free even for commercial entities) Adding the "nc" e.g. non-commercial flag was considered and then dropped. We feel that most people trying to use patterndb would definitely use it in a commercial setting and we wouldn't like to limit our users to academia a private use. What do you think? -- Bazsi

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QSTRING with @
by Peter Czanik 30 Sep '10

30 Sep '10

Hello, I'm trying to create a pattern, and ran into an interesting problem: I can't use @ with QSTRING as beginning character. Example: <patterns> <pattern>(?@QSTRING:usracct.device:@@)@ [INFO] Anonymous user logged in</pattern> </patterns> <examples> <example> <test_message program="pure-ftpd">(?(a)192.168.2.52) [INFO] Anonymous user logged in</test_message> <test_values> <test_value name="usracct.device">192.168.2.52</test_value> </test_values> </example> </examples> But when I test it, pdbtool says: Unknown parser type specified; type=')' Testing message program='pure-ftpd' message='(?(a)192.168.2.52) [INFO] Anonymous user logged in' Wrong match name='.classifier.rule_id', value='', expected='ef75e712-5e9e-4ca0-a614-5e1bf512286b' Wrong match name='usracct.device', value='', expected='192.168.2.52' I changed it to: <pattern>(?@@@ESTRING:usracct.device:)@ [INFO] Anonymous user logged in</pattern> Which works, but I'm still curious, if @ should work as a quotation character. Bye, -- Peter Czanik (CzP) <czanik(a)balabit.hu> BalaBit IT Security / syslog-ng upstream http://czanik.blogs.balabit.com/

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pure-ftpd patterns
by Peter Czanik 30 Sep '10

30 Sep '10

Hello, Attached are the pure-ftpd login/logout/failure patterns and the sample file I used. Some notes: - logouts, where username is "?" are not tagged, as these just mark that a TCP/IP connection is teared down - PAM messages are not tagged, as that would create duplicate messages about the same event. The variable part of them is simply discarded with an @ANYSTRING@ - anonymous login/logout events are tagged, username is set to "anonymous" from "ftp" You can check the attached pure-ftpd.pdb with the following command: cat pure-ftpd.samples | grep -v CzP | pdbtool match -p pure-ftpd.pdb -f - CzP lines are comments... Please check it on your own pure-ftpd logs to see, if I missed anything! Thanks! Bye, -- Peter Czanik (CzP) <czanik(a)balabit.hu> BalaBit IT Security / syslog-ng upstream http://czanik.blogs.balabit.com/

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anushri kannu wants to chat
by anushri kannu 30 Sep '10

30 Sep '10

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pure-ftpd
by Peter Czanik 30 Sep '10

30 Sep '10

Hello, I installed pure-ftpd and generated some logs. Here they are. They bring up many questions what are the best practices in some situations... Anonymous login: Sep 24 13:53:05 linux-6y8u pure-ftpd: (?(a)192.168.2.142) [INFO] New connection from 192.168.2.142 Sep 24 13:53:08 linux-6y8u pure-ftpd: (?(a)192.168.2.142) [INFO] Anonymous user logged in Sep 24 13:53:11 linux-6y8u pure-ftpd: (ftp(a)192.168.2.142) [INFO] Logout. Successful user login: Sep 24 13:54:15 linux-6y8u pure-ftpd: (?(a)192.168.2.142) [INFO] New connection from 192.168.2.142 Sep 24 13:54:19 linux-6y8u pure-ftpd: (?(a)192.168.2.142) [INFO] czanik is now logged in Sep 24 13:54:21 linux-6y8u pure-ftpd: (czanik(a)192.168.2.142) [INFO] Logout. Denied root login: Sep 24 13:54:22 linux-6y8u pure-ftpd: (?(a)192.168.2.142) [INFO] New connection from 192.168.2.142 Sep 24 13:54:24 linux-6y8u pure-ftpd: pam_listfile(pure-ftpd:auth): Refused user root for service pure-ftpd Sep 24 13:54:27 linux-6y8u pure-ftpd: (?(a)192.168.2.142) [WARNING] Authentication failed for user [root] Sep 24 13:54:30 linux-6y8u pure-ftpd: (?(a)192.168.2.142) [INFO] Logout. Wrong user password: Sep 24 13:57:43 linux-6y8u pure-ftpd: (?(a)192.168.2.142) [INFO] New connection from 192.168.2.142 Sep 24 13:57:51 linux-6y8u pure-ftpd: (?(a)192.168.2.142) [WARNING] Authentication failed for user [czanik] Sep 24 13:57:52 linux-6y8u pure-ftpd: (?(a)192.168.2.142) [INFO] Logout. Invalid user name: Sep 24 13:57:53 linux-6y8u pure-ftpd: (?(a)192.168.2.142) [INFO] New connection from 192.168.2.142 Sep 24 13:57:55 linux-6y8u pure-ftpd: gkr-pam: error looking up user information for: asdf Sep 24 13:58:00 linux-6y8u pure-ftpd: (?(a)192.168.2.142) [WARNING] Authentication failed for user [asdf] Sep 24 13:58:03 linux-6y8u pure-ftpd: (?(a)192.168.2.142) [INFO] Logout. Questions: - many times there is just a question mark instead of the username. Should it still be stored in a variable (useracct.username) or only for the Logout lines, where it actually might get a useful value? - the "New connection" line has the same info (the IP address) twice. How should it be handled? - how should Anonymous login be handled? @QSTRING:useracct.username: @ vs. <value name="usracct.username">Anonymous</value> -- Peter Czanik (CzP) <czanik(a)balabit.hu> BalaBit IT Security / syslog-ng upstream http://czanik.blogs.balabit.com/

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Syslog-ng writes log entries to 2 different logs
by Burton Simonds 29 Sep '10

29 Sep '10

I am using syslog-ng 3.1.2 and I am having a problem that I can not figure out. Our network gear sends messages to syslog-ng, and then it filters them based on device type, and name. There is one firewall, that is matching both the firewalls filter and the switches filter, and is subsequently writing to both locations. in the example below, host 1.2.3.5 is logging to both the switches log dir and the firewalls log dir even though it is only referenced in the firewalls filter. Other then the obvious possibilities, (Yes, I have confirmed that the ip address is only referenced in one filter) does anyone have any ideas on what I should look at? Thanks, Burton our filters look like this (each host filter has several addresses in it): filter f_firewalls { host(1.2.3.4) or host(1.2.3.5); }; filter f_switches {host(9.8.7.6) or host(9.8.7.5); }; destination d_firewalls {file( "/path/to/logs/fw/$YEAR/MONTH/$HOST-$YEAR$MONTH$DAY" create_dirs(yes) owner(log_owner) group(log_group) dir_perm(0775) perm(0664) ); }; destination d_switches {file( "/path/to/logs/sw/$YEAR/MONTH/$HOST-$YEAR$MONTH$DAY" create_dirs(yes) owner(log_owner) group(log_group) dir_perm(0775) perm(0664) ); }; log { source(s_network); filter(f_firewalls); destination(d_firewalls); }; log { source(s_network); filter(f_switches); destination(d_switches); }; Version info: syslog-ng 3.1.2 Installer-Version: 3.1.2 Revision: ssh+git://bazsi@git.balabit//var/scm/git/syslog-ng/syslog-ng-ose--mainline--3.1#master#8bf13c304b6ab5fc1a372b49d55c78370efe14ca Compile-Date: Aug 3 2010 11:16:08 Enable-Threads: on Enable-Debug: off Enable-GProf: off Enable-Memtrace: off Enable-Sun-STREAMS: off Enable-Sun-Door: off Enable-IPv6: on Enable-Spoof-Source: on Enable-TCP-Wrapper: off Enable-SSL: on Enable-SQL: on Enable-Linux-Caps: on Enable-Pcre: on

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vsftpd login/login failure events
by Peter Czanik 29 Sep '10

29 Sep '10

Hello, Attached are the vsftpd login/login failure events I found. There was no trace of logout in the logs. Question: what is the correct way dealing with the last rule? It has "vsftpd" twice in it. I checked, and obviously only the last appearance counts. Is it worth to define it twice? linux-6y8u:/local/czanik/tmp/syslog-ng-patterndb/file-service # pdbtool match -D -p vsftpd.pdb -P vsftpd -M "pam_listfile(bla1:auth): Refused user root for service bla2" Pattern matching part: pam_listfile(@STRING:usracct.service=bla1@:auth): Refused user @ESTRING:usracct.username=root@for service @ANYSTRING:usracct.service=bla2@ Matching part: pam_listfile(bla1:auth): Refused user root for service bla2 Values: MESSAGE=pam_listfile(bla1:auth): Refused user root for service bla2 PROGRAM=vsftpd .classifier.class=system .classifier.rule_id=7256a6d6-c720-11df-8a1d-000c298c9ba2 usracct.username=root usracct.service=bla2 usracct.type=login usracct.sessionid= usracct.application=vsftpd secevt.verdict=REJECT Bye, -- Peter Czanik (CzP) <czanik(a)balabit.hu> BalaBit IT Security / syslog-ng upstream http://czanik.blogs.balabit.com/

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[Bug 94] New: too many "Configuration file format is too old..." messages
by bugzilla＠bugzilla.balabit.com 29 Sep '10

29 Sep '10

https://bugzilla.balabit.com/show_bug.cgi?id=94 Summary: too many "Configuration file format is too old..." messages Product: syslog-ng Version: 3.2.x Platform: PC OS/Version: Linux Status: NEW Severity: normal Priority: unspecified Component: syslog-ng AssignedTo: bazsi(a)balabit.hu ReportedBy: czanik(a)balabit.hu Type of the Report: --- Estimated Hours: 0.0 When using my regular 3.1 configuration, I get the following message 1000+ times on screen: " WARNING: Configuration file format is too old, please update it to use the 3.2 format as some constructs might operate inefficiently; " It should only be printed once. Changing the first line of configuration to: "@version:3.2" silents the warning messages, and everything works as expected. -- Configure bugmail: https://bugzilla.balabit.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching all bug changes.

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AUTO: James B Horwath/TheGuardian is out of the office. (returning 10/04/2010)
by James B Horwath 29 Sep '10

29 Sep '10

I am out of the office until 10/04/2010. I will be out of the office until October 4th and will not have access to e-mail. If there are urgent logging issues please contact Sunil Gupta at 610-807-6717. Any other issues please contact Christopher Clarke. Thanks, Jim Note: This is an automated response to your message "syslog-ng Digest, Vol 65, Issue 48" sent on 9/29/10 5:34:59. This is the only notification you will receive while this person is away. ----------------------------------------- This message, and any attachments to it, may contain information that is privileged, confidential, and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, you are notified that any use, dissemination, distribution, copying, or communication of this message is strictly prohibited. If you have received this message in error, please notify the sender immediately by return e-mail and delete the message and any attachments. Thank you.

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one more sshd rule
by Peter Czanik 29 Sep '10

29 Sep '10

Hello, While checking my logs with pdbtool, I ran into this log message: Sep 23 13:10:03 linux-6y8u sshd[21420]: error: PAM: Authentication failure for root from 192.168.2.52 The attached rule seems to find it correctly: HOST=linux-6y8u MESSAGE=error: PAM: Authentication failure for root from 192.168.2.52 PROGRAM=sshd PID=21420 LEGACY_MSGHDR=sshd[21420]: .classifier.class=system .classifier.rule_id=55ec76e0-c709-11df-b62d-000c298c9ba2 usracct.username=root usracct.device=192.168.2.52 usracct.type=login usracct.sessionid=21420 usracct.application=sshd secevt.verdict=REJECT Bye, -- Peter Czanik (CzP) <czanik(a)balabit.hu> BalaBit IT Security / syslog-ng upstream http://czanik.blogs.balabit.com/

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