Snort mailing list archives

Re: flexresp2 is back and needs testing


From: Pedro Fortuna <pedro.fortuna () gmail com>
Date: Sat, 18 Sep 2004 19:48:32 +0100

I believe the code will be imported to the snort CVS tree soon.

Jeff,
Is it in the the snort CVS tree now? Any new version (i'm running 1.0.2) ?

Best Regards,
Pedro Fortuna

On Thu, 9 Sep 2004 12:03:58 -0400, Jeff Nathan <jeff () snort org> wrote:
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On Sep 9, 2004, at 7:02 AM, Pedro Fortuna wrote:

Jeff, it seems ok now :)

I tried the rule:
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"Tentativa de aceder
a FTP com user root!"; flow:to_server,established; content:"USER";
nocase; content:"root"; distance:1; nocase; pcre:"/^USER\sroot/smi";
classtype:suspicious-login; sid:1000002; rev:2; resp: reset_dest;)

And tried to access FTP server from a remote computer with username
root. Right after typing root and hitting enter, I go this output:

remoteserver.foo > ftp homenetwork.ftp.server
Connected to homenetwork.ftp.server
Name (homenetwork.ftp.server:foo): root
421 Service not available, remote server has closed connection
Login failed.
No control connection for command: Transport endpoint is not connected
ftp> by

I think this should be the result expected. I'll do more tests later.

Best Regards,
Pedro Fortuna

Pedro,

excellent.  I'm glad it worked.  Anyone using active response on
unix-like systems (ie: flexresp) should consider applying the patch I
sent to the snort-users mailing list.

I believe the code will be imported to the snort CVS tree soon.

- -Jeff

- --
http://cerberus.sourcefire.com/~jeff       (gpg/pgp key id 6923D3FD)
Part-time software mechanic, full-time daredevil!

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