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Re: configuring rules

From: Joel Esler <jesler () cisco com>
Date: Wed, 03 Sep 2014 10:27:15 -0400
Your rule file should be here:

/etc/snort/rules/snort.rules

According to the dump you posted below.


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

On 9/3/14 10:22 AM, Y M wrote:
I highly recommend that you go ahead and change your oinkcode (like right now), do not post it in public! 

To answer your questions:
- It depends on how you configure PulledPork: either all to one file (snort.rules) or you copy over the individual rules files. PulledPork handles all of that. - If you do not do the modification in PulledPork's modifysid.conf, then all of your changes will get overwritten. - We will need to see how you are configuring PulledPork (minus your oinkcode). 

YM

------------------------------------------------------------------------
From: Sharif.Uddin () spectrumasa com
To: jesler () cisco com
Date: Wed, 3 Sep 2014 14:10:08 +0000
CC: snort-users () lists sourceforge net
Subject: Re: [Snort-users] configuring rules

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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IMPORTANT - This message and any attached files contain information intended for the exclusive use of the party or parties to whom it is addressed and may contain information that is proprietary, privileged, confidential and/or exempt from disclosure under applicable law. If you are not an intended recipient, you are hereby notified that any viewing, copying, disclosure or distribution of this information may be subject to legal restriction or sanction. Please notify the sender immediately and delete the original message without making any copies. Copyright in this email and any attachments belong to Spectrum Geo Limited. We cannot guarantee the security or confidentiality of email communications. We do not accept any liability for losses or damages that you may suffer as a result of your receipt of this email. Email communication with Spectrum Geo Ltd., may be monitored as permitted by UK legislation. Spectrum Geo Limited, is a limited company registered in England and Wales. Registered number: 1979422. Registered office: 95 Aldwych, London WC2B 4JF.
IMPORTANT - This message and any attached files contain information intended for the exclusive use of the party or parties to whom it is addressed and may contain information that is proprietary, privileged, confidential and/or exempt from disclosure under applicable law. If you are not an intended recipient, you are hereby notified that any viewing, copying, disclosure or distribution of this information may be subject to legal restriction or sanction. Please notify the sender immediately and delete the original message without making any copies. Copyright in this email and any attachments belong to Spectrum Geo Limited. We cannot guarantee the security or confidentiality of email communications. We do not accept any liability for losses or damages that you may suffer as a result of your receipt of this email. Email communication with Spectrum Geo Ltd., may be monitored as permitted by UK legislation. Spectrum Geo Limited, is a limited company registered in England and Wales. Registered number: 1979422. Registered office: 95 Aldwych, London WC2B 4JF. ------------------------------------------------------------------------------ Slashdot TV. Video for Nerds. Stuff that matters. http://tv.slashdot.org/ _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://sourceforge.net/mailarchive/forum.php?forum_name=snort-users Please visit http://blog.snort.org to stay current on all the latest Snort news! 


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