Thanks Phil, that works. And to your knowledge is there a way to do something similar with UDP. Like to filter the entries in UNREPLIED state? Alexis. ________________________________________ From: Phil Oester [kernel@xxxxxxxxxxxx] Sent: September 13, 2013 10:45 To: Alexis Salinas Cc: netfilter@xxxxxxxxxxxxxxx Subject: Re: clarification on the use of --state parameter within conntrack command On Fri, Sep 13, 2013 at 05:00:17PM +0000, Alexis Salinas wrote: > Hi All, > Could someone help me understand the correct use of the protocol filter parameter "--state". I figure it would be something like this " conntrack -L -p TCP --state ESTABLISHED" but 2 different versions of conntrack-tools give the same error (conntrack v1.2.1 (conntrack-tools): unknown option `--state' > Try `conntrack -h' or 'conntrack --help' for more information.) Don't capitalize the protocol. conntrack -L -p tcp --state SYN_SENT Phil -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html