Re: configuring rules

[Sharif Uddin <Sharif.Uddin () spectrumasa com>]

I have set up pulled pork and would like to know


*         where all the rules get written to

*         what happens if I modify one of these rules and run the command again

*         why when I empty the rules folder and run the pulledpork command the folder is still empty



[root@snort snort]# pulledpork.pl -c /etc/pulledpork/pulledpork.conf -vv

    http://code.google.com/p/pulledpork/
      _____ ____
     `----,\    )
      `--==\\  /    PulledPork v0.7.0 - Swine Flu!
       `--==\\/
     .-~~~~-.Y|\\_  Copyright (C) 2009-2013 JJ Cummings
  @_/        /  66\_  cummingsj () gmail com
    |    \   \   _(")
     \   /-| ||'--'  Rules give me wings!
      \_\  \_\\
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Config File Variable Debug /etc/pulledpork/pulledpork.conf
        snort_path = /usr/local/bin/snort
        black_list = /etc/snort/rules/iplists/default.blacklist
        pid_path = /var/run/snort_end34.pid
        IPRVersion = /etc/snort/rules/iplists
        rule_path = /etc/snort/rules/snort.rules
        ignore = deleted.rules,experimental.rules,local.rules
        snort_control = /usr/local/bin/snort_control
        rule_url = ARRAY(0x30e8720)
        sid_msg_version = 1
        sid_changelog = /var/log/sid_changes.log
        sid_msg = /etc/snort/sid-msg.map
        config_path = /etc/snort/snort.conf
        temp_path = /tmp
        distro = RHEL-6-0
        version = 0.7.0
        sorule_path = /usr/local/lib/snort_dynamicrules/
        local_rules = /etc/snort/rules/local.rules
MISC (CLI and Autovar) Variable Debug:
        arch Def is: x86-64
        Config Path is: /etc/pulledpork/pulledpork.conf
        Distro Def is: RHEL-6-0
        Disabled policy specified
        local.rules path is: /etc/snort/rules/local.rules
        Rules file is: /etc/snort/rules/snort.rules
        sid changes will be logged to: /var/log/sid_changes.log
        sid-msg.map Output Path is: /etc/snort/sid-msg.map
        Snort Version is: 2.9.6.2
        Snort Config File: /etc/snort/snort.conf
        Snort Path is: /usr/local/bin/snort
        SO Output Path is: /usr/local/lib/snort_dynamicrules/
        Will process SO rules
        Extra Verbose Flag is Set
        Verbose Flag is Set
        Base URL is: 
https://www.snort.org/reg-rules/|snortrules-snapshot.tar.gz|bc79ebef13822d894e68f63ee3e46916dc684d82 
https://s3.amazonaws.com/snort-org/www/rules/community/|community-rules.tar.gz|Community 
http://labs.snort.org/feeds/ip-filter.blf|IPBLACKLIST|open 
https://www.snort.org/reg-rules/|opensource.gz|bc79ebef13822d894e68f63ee3e46916dc684d82


MY HTTPS PROXY = http://proxy:3128


MY HTTP PROXY = http://proxy:3128
Checking latest MD5 for snortrules-snapshot-2962.tar.gz....
        Fetching md5sum for: snortrules-snapshot-2962.tar.gz.md5
** GET https://www.snort.org/reg-rules/snortrules-snapshot-2962.tar.gz.md5/bc79ebef13822d894e68f63ee3e46916dc684d82 ==> 
200 OK (1s)
        most recent rules file digest: 89727bcdc8e13597e20f98a8cf1922c6
        current local rules file  digest: 89727bcdc8e13597e20f98a8cf1922c6
        The MD5 for snortrules-snapshot-2962.tar.gz matched 89727bcdc8e13597e20f98a8cf1922c6

Checking latest MD5 for community-rules.tar.gz....
        Fetching md5sum for: community-rules.tar.gz.md5
** GET https://s3.amazonaws.com/snort-org/www/rules/community/community-rules.tar.gz.md5 ==> 200 OK
        most recent rules file digest: 9da58f33a7d70a15ec4783846a26215b
        current local rules file  digest: 9da58f33a7d70a15ec4783846a26215b
        The MD5 for community-rules.tar.gz matched 9da58f33a7d70a15ec4783846a26215b

IP Blacklist download of http://labs.snort.org/feeds/ip-filter.blf....
** GET http://labs.snort.org/feeds/ip-filter.blf ==> 200 OK
        Reading IP List...
Checking latest MD5 for opensource.gz....
        Fetching md5sum for: opensource.gz.md5
** GET https://www.snort.org/reg-rules/opensource.gz.md5/bc79ebef13822d894e68f63ee3e46916dc684d82 ==> 200 OK
        most recent rules file digest: 489712cc1f594ad03958473e8a4c00d0
        current local rules file  digest: 489712cc1f594ad03958473e8a4c00d0
        The MD5 for opensource.gz matched 489712cc1f594ad03958473e8a4c00d0

Cleanup....
        removed 0 temporary snort files or directories from /tmp/tha_rules!
Blacklist version is unchanged, not updating!
Writing /var/log/sid_changes.log....
        Done

No Rule Changes

No IP Blacklist Changes

Done
Please review /var/log/sid_changes.log for additional details
Fly Piggy Fly!

From: Joel Esler (jesler) [mailto:jesler () cisco com]
Sent: 02 September 2014 17:53
To: Sharif Uddin
Cc: snort-users () lists sourceforge net
Subject: Re: [Snort-users] configuring rules

Yes.

http://manual.snort.org/node53.html

--
Joel Esler
Open Source Manager
Threat Intelligence Team Lead
Talos

On Sep 2, 2014, at 12:50 PM, Sharif Uddin <Sharif.Uddin () spectrumasa com<mailto:Sharif.Uddin () spectrumasa com>> 
wrote:


Is it possible to have multiple ip addresses instead of just networks in

ipvar HOME_NET

From: Joel Esler (jesler) [mailto:jesler () cisco com]
Sent: 02 September 2014 17:17
To: Sharif Uddin
Cc: snort-users () lists sourceforge net<mailto:snort-users () lists sourceforge net>
Subject: Re: [Snort-users] configuring rules

Dear Sharif,

Thanks for your email.  I believe you will find what you are looking for 
here:http://manual.snort.org/node31.html#SECTION00446000000000000000

--
Joel Esler
Open Source Manager
Threat Intelligence Team Lead
Talos


On Sep 2, 2014, at 12:05 PM, Sharif Uddin <Sharif.Uddin () spectrumasa com<mailto:Sharif.Uddin () spectrumasa com>> 
wrote:



How would I add classification, severity on custom alerts?



From: Joel Esler (jesler) [mailto:jesler () cisco com]
Sent: 02 September 2014 16:49
To: Sharif Uddin
Cc: snort-users () lists sourceforge net<mailto:snort-users () lists sourceforge net>
Subject: Re: [Snort-users] configuring rules

It appears that all of your rules are bi-directional.  "<>".  Try making them single directional "->"

--
Joel Esler
Open Source Manager
Threat Intelligence Team Lead
Talos

On Sep 2, 2014, at 11:41 AM, Sharif Uddin <Sharif.Uddin () spectrumasa com<mailto:Sharif.Uddin () spectrumasa com>> 
wrote:




Hello


I needs some help in writing some rules to test my network.


I have set up snort, barnyard2, snorby on centos 7


My home network is

ipvar HOME_NET 
[172.16.0.0/22,172.16.12.0/24,172.16.13.0/24,31.221.13.192/29,62.49.167.0/29,62.49.167.8/29,192.168.254.0/24,192.168.202.0/24,192.168.218.0/24,10.0.2.0/24,10.0.3.0/24,192.168.15.0/24,172.16.64.0/18,172.16.15.0/24,172.16.16.0/22,10.0.0.0/24,10.0.1.0/24,192.168.252.0/24,172.16.171.0/24,10.40.135.0/24,172.16.8.0/24,172.16.9.0/24,192.168.0.0/24,172.0.0.0/24,105.0.0.0/24,192.168.1.1/24,192.168.224.0/20,212.103.166.96/30]



The following are some test rules which I put in local.rules


alert icmp !$HOME_NET any <> $HOME_NET any (msg:"ICMP"; sid: 1000001; rev:1;) # external ping to internal network?
alert tcp $HOME_NET any <> $HOME_NET any (content:"|00 01 86 a5|"; msg:"mountd access";sid:1000002;rev:1;)  # found a 
sample online which has not responded to anything
alert tcp !$HOME_NET :139 <> $HOME_NET any (msg:"NetBIOS Session";sid:1000003;rev:1;) # test external ip trying to mount
alert tcp !$HOME_NET :445 <> $HOME_NET any (msg:"SMB over TCP";sid:1000004;rev:1;) # test external ip trying to mount


Have I written them correctly?


For my samba alerts I have found it also includes internal network, when I look at the source port on snorby, its not 
always 139 or 445. What am I doing wrong?



Sharif






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