Re: Network Variables

[James Lay <jlay () slave-tothe-box net>]

Yea that was a single quote ;)  Guessing it's a windows-ism, but glad 
it's working now :)

James

On 2013-05-02 09:01, Seth Dunn wrote:
> If I do quotes " vs. apostrophe '
> That seems to work on the command line
>
> -----Original Message-----
> From: Castle, Shane [mailto:scastle () bouldercounty org]
> Sent: Thursday, May 02, 2013 10:51 AM
> To: Seth Dunn; 'James Lay'; 'Snort'
> Subject: RE: [Snort-users] Network Variables
>
> I dunno - I can parse that BPF expression several different ways, and
> the parsing results in different capture characteristics.
>
> Does the first "not" apply to just "net 10.10.0.0/24" or to the expr
> "net 10.10.0.0/24 and dst host 10.75.45.1 && dst port 80"? (For
> instance.) This depends on the precedence and order of how Snort 
> parses
> the string. I can find no doc on this in the Snort manpage, the 
> tcpdump
> manpage, or the Snort manual. I suggest using parentheses for 
> grouping
> so that your intent is clear.
>
> --
> Shane Castle
> Data Security Mgr, Boulder County IT
>
> -----Original Message-----
> From: Seth Dunn [mailto:seth () d2ms com]
> Sent: Thursday, May 02, 2013 08:09
> To: James Lay; Snort
> Subject: Re: [Snort-users] Network Variables
>
> Also of note.
> It seems that if snort starts with a bpf file configured....then for
> whatever reason, all traffic is no longer monitored, even though 
> snort
> has started.
> So while this rule::
> not net 10.10.0.0/24 and dst host 10.75.45.1 && dst port 80 or not 
> net
> 10.30.0.0/24 and dst host 10.75.45.1 && dst port 80
>
> is pretty specific.....
> I have another rule set in my local.rules file that should alert on 
> any
> FTP attempt to IP 10.76.65.1....and if the bpf file is configured for
> snort, then the attempt is not alerted by snort.
> If I remove the bpf file from being used, then any FTP attempt is 
> again
> alerted.
>
>
>
> From: James Lay [mailto:jlay () slave-tothe-box net]
> Sent: Thursday, May 02, 2013 8:10 AM
> To: Snort
> Subject: Re: [Snort-users] Network Variables
>
>
>
> Quotation marks may be needed...try appending via command line as 
> well.
>
>
>
> James
>
>
>
> On May 2, 2013, at 5:50 AM, Seth Dunn <seth () d2ms com> wrote:
>
>
>
>
>
> What is DAQ?  I have seen that, but have no idea what that is.
>
> As far as my bpf file goes, if it is like this::
>
>
>
> #not net 10.10.0.0/24 and not net 10.30.0.0/24
>
> not net 10.10.0.0/24 and dst host 10.75.45.1 && dst port 80 or not 
> net
> 10.30.0.0/24 and dst host 10.75.45.1 && dst port 80
>
>
> It will fail with::
>
> Reading filter from bpf file: D:\Snort\etc\ignore2.bpf
>
> ERROR: short read D:\Snort\etc\ignore2.bpf (169 != 170)
>
> Fatal Error, Quitting..
>
>
>
> If I remove the commented line, then snort starts fine.
> If I try to have multiple lines in the file, (all being rules, no
> comments) the it will fail with a similar error as above.
> I have never seen a DAQ error.
>
>
>
> From: Russ Combs [mailto:rcombs () sourcefire com]
> Sent: Thursday, May 02, 2013 12:08 AM
> To: waldo kitty
> Cc: snort-users () lists sourceforge net
> Subject: Re: [Snort-users] Network Variables
>
>
>
> Snort does allow comments in the BPF file, starting with # to end of
> line.  If there is a syntax error, you should see something like:
>
>
>
> ERROR: Can't set DAQ BPF filter to '
>
> ...
>
> ' (pcap_daq_set_filter: pcap_compile: syntax error)!
>
> Fatal Error, Quitting..
>
>
>
> What DAQ are you using?  Please send the BPF file that fails and the
> error that you get.
>
>
>
> On Wed, May 1, 2013 at 10:07 PM, waldo kitty 
> <wkitty42 () windstream net>
> wrote:
>
> On 5/1/2013 13:09, Seth Dunn wrote:
> > But any ideas why snort fails to start if I add in a '#' to comment 
> > a
> > line??
>
> i have no clue but it sounds like a coding error not allowing comment
> lines i the BPF file... only joel or one of the snort dev guys can 
> tell
> us that... or possibly a code diver who can root around in the snort
> code ;)
>
>
> --
> NOTE: No off-list assistance is given without prior approval.
>        Please keep mailing list traffic on the list unless
>        private contact is specifically requested and granted.
>
>
> ------------------------------------------------------------------------
> ------
> Introducing AppDynamics Lite, a free troubleshooting tool for 
> Java/.NET
> Get 100% visibility into your production application - at no cost.
> Code-level diagnostics for performance bottlenecks with <2% overhead
> Download for free and get started troubleshooting in minutes.
> http://p.sf.net/sfu/appdyn_d2d_ap1
> _______________________________________________
> 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!
>
>
>
>
> ------------------------------------------------------------------------
> ------
> Introducing AppDynamics Lite, a free troubleshooting tool for 
> Java/.NET
> Get 100% visibility into your production application - at no cost.
> Code-level diagnostics for performance bottlenecks with <2% overhead
> Download for free and get started troubleshooting in minutes.
>
> http://p.sf.net/sfu/appdyn_d2d_ap1______________________________________
> _________
> 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!


------------------------------------------------------------------------------
Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET
Get 100% visibility into your production application - at no cost.
Code-level diagnostics for performance bottlenecks with <2% overhead
Download for free and get started troubleshooting in minutes.
http://p.sf.net/sfu/appdyn_d2d_ap1
_______________________________________________
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!