Thank you all, the truth is i'm newbie in linux, and the Iptables rules it'son /etc/rc.d/rc.local (Copy Paste from another server, configured by another people with more knowledge of linux, ) :), so i'm adding rules to the bottom of that file, maybe one rule above is blocking the 5901 port, i dont know why the "more linux knowledge people" didn't put the rules in /etc/sysconfig/iptables, so i will check the logs Thanks Again 2006/12/12, Lamar Owen <lowen at pari.edu>: > On Tuesday 12 December 2006 06:26, Departamento de Informatica wrote: > > Thanks, I've configured the vnc server, on port 5901, lamentably i > > only have acces from localhost, with nmap the port 5901 appears like > > "filtered", just need to changue some thing on Iptables configuration, > > because i did > > > > iptables -A INPUT -p TCP -i eth1 -s 10.20.30.0/24 --dport 5901 -j ACCEPT > > For the default installation with iptables enabled, all the rules are > in /etc/sysconfig/iptables; you need to edit this file with the rule you need > above the reject line and with the right chain name. Once you edit this > file, do a 'service iptables restart' to make it active. > > If it still doesn't work, check /var/log/messages to see if SELinux is denying > the socket open for listening. > -- > Lamar Owen > Director of Information Technology > Pisgah Astronomical Research Institute > 1 PARI Drive > Rosman, NC 28772 > (828)862-5554 > www.pari.edu > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >