Re: [snort-user] rule unable to detect port specific DoS attack

[Mayur Patil <ram.nath241089 () gmail com>]

do u mean to say traffic generated by wireshark when eth0 start capturing ?


On Wed, Sep 4, 2013 at 12:04 AM, Joel Esler <jesler () sourcefire com> wrote:

> Might be helpful to actually look at the traffic you are generating to see
> what it actually is.
>
> --
> *Joel Esler*
> Senior Research Engineer, VRT
> OpenSource Community Manager
> Sourcefire
>
> On Sep 3, 2013, at 2:15 PM, Mayur Patil <ram.nath241089 () gmail com> wrote:
>
> Hello Joel Sir,
>
>    After googling I got that this attack TCP based.
>
>   Seeking for guidance,
>
>   Thanks!!
>
>
>
> On Tue, Sep 3, 2013 at 8:48 PM, Mayur Patil <ram.nath241089 () gmail com>wrote:
>
> > P.S. I forgot to add --flood within attack command.
> >
> >
> > On Tue, Sep 3, 2013 at 8:48 PM, Mayur Patil <ram.nath241089 () gmail com>wrote:
> >
> > > Hello Joel Sir,
> > >
> > >      attack is from command line and Command is
> > >
> > >      [root@abc]# hping3 --rand-source <ip> -p 514 -S -L 0
> > >
> > >     from hping.org site,
> > >
> > > It supports TCP, UDP, ICMP and RAW-IP protocols
> > > >
> > >
> > >    so I am confused between it .
> > >
> > >     Please guide me where I am mistaken !
> > > *
> > > --
> > > *
> > > *Cheers,
> > > *
> > > *Mayur*
> > >
> > > On Tue, Sep 3, 2013 at 8:41 PM, Joel Esler <jesler () sourcefire com>wrote:
> > >
> > > > On Sep 3, 2013, at 1:44 AM, Mayur Patil <ram.nath241089 () gmail com>
> > > > wrote:
> > > >
> > > > Hello All,  I have used rule
> > > >
> > > >  alert tcp any any -> $HOME_NET 514 (msg:"DOS flood denial of service
> > > >  attempt";flow:to_server; detection_filter:track by_dst, count 50,
> > > > seconds 1;
> > > >  metadata:service syslog; classtype:attempted-dos; sid:25101; rev:1;)
> > > >
> > > >
> > > >   which generates alert for at random ports which are not on my
> > > > lists..fine
> > > >
> > > >    But if I write port-specific it does not logging into alert file
> > > >    alert tcp [192.168.21.1,192.168.21.2] any -> $HOME_NET 514 (msg:"DOS
> > > >   flood denial of service attempt";flow:to_server;
> > > > detection_filter:track by_dst,
> > > >   count 50, seconds 1; metadata:service syslog;
> > > > classtype:attempted-dos;
> > > >   sid:25101; rev:1;)
> > > >
> > > >
> > > >   what I done is as follows:
> > > >
> > > >   I am attaching here the output of pcap file generated by wireshark.
> > > >
> > > >      1. I run snort in NIDS mode
> > > >
> > > >          snort -c /etc/snort/snort.conf -l /var/log/snort
> > > >
> > > >      2. Then I start capture of packets on eth0 interface.
> > > >
> > > >      3. I perform DoS flood attack output of which generated I am
> > > > attaching here
> > > >
> > > >          http://fpaste.org/36432/
> > > >
> > > >      Seeking for guidance,
> > > >
> > > >      Please help,
> > > >
> > > >      Thanks!!
> > > >
> > > >
> > > >
> > > > Is the traffic TCP or UDP?
> > > >
> > > > --
> > > > *Joel Esler*
> > > > Senior Research Engineer, VRT
> > > > OpenSource Community Manager
> > > > Sourcefire
> > >
> > >
> > >
> > > --
> > > *Yours Sincerely,
> > > Mayur* S. Patil,
> > > ME COMP ENGG,
> > > MITCOE,
> > > Pune.
> > >
> > > Contact :
> > > * * <https://www.facebook.com/mayurram>  <https://twitter.com/RamMayur>
> > > <https://plus.google.com/u/0/107426396312814346345/about>
> > > <http://in.linkedin.com/pub/mayur-patil/35/154/b8b/>
> > > <http://stackoverflow.com/users/1528044/rammayur> *
> > > <https://myspace.com/mayurram>* <https://github.com/ramlaxman>
> >
> >
> > --
> > *Yours Sincerely,
> > Mayur* S. Patil,
> > ME COMP ENGG,
> > MITCOE,
> > Pune.
> >
> > Contact :
> > * * <https://www.facebook.com/mayurram>  <https://twitter.com/RamMayur>
> > <https://plus.google.com/u/0/107426396312814346345/about>
> > <http://in.linkedin.com/pub/mayur-patil/35/154/b8b/>
> > <http://stackoverflow.com/users/1528044/rammayur> *
> > <https://myspace.com/mayurram>* <https://github.com/ramlaxman>
>
>
> --
> *Yours Sincerely,
> Mayur* S. Patil,
> ME COMP ENGG,
> MITCOE,
> Pune.
>
> Contact :
> * * <https://www.facebook.com/mayurram>  <https://twitter.com/RamMayur>
> <https://plus.google.com/u/0/107426396312814346345/about>
> <http://in.linkedin.com/pub/mayur-patil/35/154/b8b/>
> <http://stackoverflow.com/users/1528044/rammayur> *
> <https://myspace.com/mayurram>* <https://github.com/ramlaxman>


-- 
*Yours Sincerely,
Mayur* S. Patil,
ME COMP ENGG,
MITCOE,
Pune.

Contact :
* * <https://www.facebook.com/mayurram>  <https://twitter.com/RamMayur>
<https://plus.google.com/u/0/107426396312814346345/about>
<http://in.linkedin.com/pub/mayur-patil/35/154/b8b/>
<http://stackoverflow.com/users/1528044/rammayur> *
<https://myspace.com/mayurram>* <https://github.com/ramlaxman>

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