Deepak,
If you have access to Linux box with 2.4.x kernel then use iptables
(netfilter) support in kernel and by using iptables command you can play with
--tcp-options or --syn options etc.
A good iptables tutorials for starters here.
http://people.unix-fu.org/andreasson/index.html
and look for www.freshmet.net , search for iptables
Other firewalls such as checkpoint FW-1 also allow you to play with options
using their INSPECT language.
Good Luck!
Rajeev
On Thursday 11 October 2001 08:51, Sharma Deepak wrote:
> Can anyone help me to access the TCP options and flags like syn, urg, ack
> etc. I'm trying to develop a firewall and need to use these options in the
> packet filter. Please reply me at
>
> [EMAIL PROTECTED]
> [EMAIL PROTECTED]
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>
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