Re: FW and TCP Sessions

[backup <backup () roc co in>]

Manoj Kumar Neelapareddy wrote:

> Hi,
>
> if a FW is said to be a stateful firewall, then will
> it allow a TCP packet to pass through it(outbound), if
> i haven't sent a TCP SYN to initiate a TCP Session
> before sending this TCP packet?
>
> I heard that Statefull firewall won't allow any TCP
> packets, other than TCP SYNs to pass through it, if
> there is no session corresponding a TCP packet is
> maintained in FW's session table.
>
> and FW will create a new session only when it detects
> a TCP SYN.
>
> is this correct?
>
> comments plz.
NO, It wont allow until you have a policy configured. Policies are based 
on 5 tuples
source IP, Destination IP, Source port, destination port and Protocol.
Again the polices are of two types- Inbound and outbound.
Depending up on the configured policy the traffic passes thro whether 
its inbound or outbound.
Cheers,
-Ravi
ROCSYS Technologies Ltd.,
http://www.rocsys.com

> thank u
> Manoj
>
>
>         
>                 
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