Re: Detecting telnet connections with TERM=xxx set

[Sven Huster <sven.huster () hosteurope com>]

On Fri, Nov 22, 2002 at 02:40:22PM -0500, Chris Green wrote:
> "Sven Huster" <sven.huster () hosteurope com> writes:
>
> > Hi there
> >
> > I wanted to alter on connection which have set TERM to e.g. xxx
> > So I tried:
> > alter tcp $EXTERNAL_NET any -> $HOME_NET 23 (msg:"does not really matter"; content:"|fffa 1800|"; tag: session, 
> > 1000, packets;)
> >
> > But the f$%^ thing does not work as soon as I put the content option in.
> > I got no idea why this does not work.
>
> Try adding rawbytes; at the end of the content in your rules.
>
> Option negotiation codes are normalized away by default.   The
> rawbytes option allows you to match the raw pattern data.

Thanks for that. Works ok now.

Just one other thing:
Are multiple content options are treated separate?
Like I wanted to add another one, which also might want the rawbytes option.
Do I have to specify it each time?
What up with the offset and depth options?

Thanks
Sven


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