Re: Snort tcp reset

[Daniele Gallarato <daniele.gallarato () gmail com>]

Sorry.

Anyone can address me to a documentation about tcp reset with flexresp3?

Thanks
Daniele


2012/5/4 Daniele Gallarato <daniele.gallarato () gmail com>

> Yes.
>
> I don't understand well the difference between flexresp3 (previously I've
> used flexresp1, so I've tried to use flexresp3), and active-response.
>
> If I configure
>
> config response: device eth0 attempts 2
>
>
> when snort hit a reset rule, it flood the network and I can't reach it
> anymore...
>
> Thanks
>
>
> * Flexresp3 is new: the resp rule option keyword is used to configure
> active
>   responses for rules that fire.
>
>     ./configure --enable-flexresp3
>
>     alert tcp any any -> any 80 (content:"a"; resp:<resp_t>; sid:1;)
>
> * resp_t includes all flexresp and flexresp2 options:
>
>     <resp_t> ::= \
>         rst_snd | rst_rcv | rst_all | \
>         reset_source | reset_dest | reset_both | icmp_net | \
>         icmp_host | icmp_port | icmp_all
>
> See README.flexresp3 for more.
>
>
>
> 2012/5/4 Russ Combs <rcombs () sourcefire com>
>
> > Did you check README.active?
> >
> > On Fri, May 4, 2012 at 10:00 AM, Daniele Gallarato <
> > daniele.gallarato () gmail com> wrote:
> >
> > > Hello.
> > >
> > > I've installed snort version 2.9.2.2 onto an ubuntu server
> > > (2.6.32-41-server #88-Ubuntu SMP).
> > >
> > > I've followed this good guide:
> > >
> > >
> > > http://www.google.it/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=0CHsQFjAB&url=http%3A%2F%2Fwww.snort.org%2Fassets%2F158%2F014-snortinstallguide292.pdf&ei=zd-jT5vCBPTa4QSl0rifCQ&usg=AFQjCNGaL8nB1vZPRodUBX6IQluwufpbFQ&sig2=FqFj5w3hOXP1NBcn3gbxoQ
> > >
> > > All seems to work properly.
> > >
> > > Only thing that doesn't work is flexresp3.
> > >
> > > In an old installation (2.4.3) with old flexresp, resets work.
> > >
> > > In this new installation, I've compiled snort with:
> > >
> > > ./configure --prefix=/usr/local/snort --enable-sourcefire
> > > --enable-active-response --enable-flexresp3
> > > make
> > > make install
> > >
> > > and written some local.rules (they work) and some reset.rules (they hit
> > > the rule, appear in reports, but doesn't reset).
> > >
> > > Rule is:
> > >
> > > alert tcp <my_ip> any -> $HOME_NET 3389 (resp: rst_all; msg:"Reset
> > > Sessioni Remote Desktop" ; sid:200004;)
> > >
> > > I've also checked packets with wireshark, I can't see any reset.
> > >
> > > Any help will be appreciated.
> > >
> > > Thanks
> > > Daniele Gallarato
> > >
> > >
> > >
> > > ------------------------------------------------------------------------------
> > > Live Security Virtual Conference
> > > Exclusive live event will cover all the ways today's security and
> > > threat landscape has changed and how IT managers can respond. Discussions
> > > will include endpoint security, mobile security and the latest in malware
> > > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> > > _______________________________________________
> > > 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://www.geocrawler.com/redir-sf.php3?list=snort-users
> > >
> > > Please visit http://blog.snort.org to stay current on all the latest
> > > Snort news!
------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/

_______________________________________________
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://www.geocrawler.com/redir-sf.php3?list=snort-users

Please visit http://blog.snort.org to stay current on all the latest Snort news!