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Blocking lists of IP addresses using the iptables recent module or ipset and make fail2ban use it.

Posted 04-21-2013 at 07:25 AM by unSpawn
Updated 04-21-2013 at 08:34 AM by unSpawn (//Suggest saving the current rule set)

To combat the common misconception that filling Netfilters filter table INPUT chain is still a valid choice, to show ease of use and for future reference I'll outline how to mass block IP(v4) addresses and how to integrate this in fail2ban.

*This web log post will not explain the fine print on ipset and iptables' {ipt,xt}_recent ('iptables -m recent --help'), nor will it tell you how to install anything, help you configure fail2ban, go into SysV vs BSD init scripts or application...
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Old
Rating: 2 votes, 4.50 average.

Simple ClamAV sig for /lib64/libkeyutils.so.1.9 contents

Posted 02-16-2013 at 02:26 PM by unSpawn
Updated 02-17-2013 at 07:03 AM by unSpawn

Wrt SSHD Rootkit Rolling around.

*I updated RKH in CVS but detection wasn't added yet to ClamAV, Securiteinfo or R-fx MLD:
Code:
]$ clamscan --official-db-only=no -d ./securiteinfoelf.hdb -d ./securiteinfosh.hdb -d ./rfxn.hdb -d ./rfxn.ndb -d ./RKH_libkeyutils.ldb -r --infected -r $PWD
path01/libkeyutils.so.1.9: RKH_libkeyutils.so.1.9.UNOFFICIAL FOUND
path02/libkeyutils.so.1.9: RKH_libkeyutils.so.1.9.UNOFFICIAL FOUND
path03/innucuoustarball.tar.bz2: RKH_libkeyutils.so.1.9.UNOFFICIAL
...
Attached Files
File Type: txt RKH_libkeyutils.ldb.txt (195 Bytes, 14 views)
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Views 1946 Comments 0 unSpawn is offline
Old

Bash logging patches

Posted 06-12-2012 at 12:25 PM by unSpawn

Over the years we've seen quite a few "I want to log everything" questions asked for which I listed some pointers a while ago in several posts. To complement a recent "I want to capture all the operations performed in the terminal" question (thread: How to Capture a Unix Terminal Session?) I looked for Bash patches. Long story short: Bash 4 can be compiled with syslog support but still that shell will run as the user who logs in AFAIK. (So depending on your requirements for coverage...
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Views 2926 Comments 0 unSpawn is offline
Old

Rootkit Hunter reissue of 1.4.0 release (ALLOWDEVFILE)

Posted 05-01-2012 at 11:02 AM by unSpawn

Please note we've found an error with usage of exclamation points in an ALLOWDEVFILE check.
We have corrected this and have reissued 1.4.0.

NEW RELEASE SHA1: 48798beec504c00af93bf64b6e35dfc7d7aaff07
old release SHA1: 22546370647b79abce783d2a2d29352843d1b617


Apologies for the inconvenience,
unSpawn
---
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Views 1103 Comments 0 unSpawn is offline
Old

Rootkit Hunter release 1.4.0

Posted 04-30-2012 at 07:11 PM by unSpawn
Updated 04-30-2012 at 07:12 PM by unSpawn

Rootkit Hunter 1.4.0 release is here thanks to John Horne and all contributors who provided code, submitted ideas, bugs, fixes, documentation, helped out on the rkhunter-users mailing list and promoted Rootkit Hunter.

New:

- Added the '--list propfiles' command-line option. This will dump out the list of filenames that will be searched for when building the file properties database. By default the list is not shown if just '--list' is used.
- Added Jynx rootkit...
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