confusion with dport and sport

confusion with dport and sport

[J. Bakshi]

Hello,

I have found that TOS is helpful for traffic shaping. But some guide use
--sport where other use --dport the handle the same thing hence I am
very confusd !!
To get a good response from the ssh running on a remote server the rule
can be placed in the remote server can be

``````````````````
iptables -t mangle -A PREROUTING -p tcp --dport  $SSH_PORT -j TOS
--set-tos Minimize-Delay
`````````````````````

BUT some site do the same by replacing --dport to --sport

Which one should be the right value ? Please enlighten me.
Thanks

Re: confusion with dport and sport

[Abhishek Singh]

[-- Attachment #1: Type: text/plain, Size: 1165 bytes --]

On 09/03/2009 12:08 PM, J. Bakshi wrote:
> Hello,
>
> I have found that TOS is helpful for traffic shaping. But some guide use
> --sport where other use --dport the handle the same thing hence I am
> very confusd !!
> To get a good response from the ssh running on a remote server the rule
> can be placed in the remote server can be
>
> ``````````````````
> iptables -t mangle -A PREROUTING -p tcp --dport  $SSH_PORT -j TOS
> --set-tos Minimize-Delay
> `````````````````````
>
> BUT some site do the same by replacing --dport to --sport
>
> Which one should be the right value ? Please enlighten me.
> Thanks
> --
> To unsubscribe from this list: send the line "unsubscribe netfilter" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
>   

--dport is used for destination port for which it refers to packets
coming up to your gateway/pc destined for a specific port, and --sport
is used for source port for which it refers to packets going out from
your pc destined for that port.

-- 
Abhishek Singh
FOSS Nepal Community
http://wiki.fossnepal.org



[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 260 bytes --]