block port forwarding?
Hello,
*i have internet usage rules for all of my network. only 2 servers have full access to the internet.. lately i've noticed that lots of traffic being produced by the servers .. is there a way to know whose using port forwarding to my server so they access the internet ? or is there a way to block people from doing such a thing ? __________________________________________________ _______________ Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. https://signup.live.com/signup.aspx?id=60969 _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos |
block port forwarding?
2010/2/25 Roland RoLaNd <r_o_l_a_n_d@hotmail.com>:
> > Hello, > > *i have internet usage rules for all of my network. > only 2 servers have full access to the internet.. > lately i've noticed that lots of traffic being produced by the servers .. > is there a way to know whose using port forwarding to my server so they access the internet ? > or is there a way to block people from doing such a thing ? Err. Disable ip_forward&nat on server and limit connections on main firewall .. -- Eero _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos |
block port forwarding?
cat /proc/sys/net/ipv4/ip_forward
0 ---------------------------------------- > Date: Thu, 25 Feb 2010 13:39:41 +0200 > From: eero.volotinen@iki.fi > To: centos@centos.org > Subject: Re: [CentOS] block port forwarding? > > 2010/2/25 Roland RoLaNd : >> >> Hello, >> >> i have internet usage rules for all of my network. >> only 2 servers have full access to the internet.. >> lately i've noticed that lots of traffic being produced by the servers .. >> is there a way to know whose using port forwarding to my server so they access the internet ? >> or is there a way to block people from doing such a thing ? > > Err. Disable ip_forward&nat on server and limit connections on main firewall .. > > -- > Eero > _______________________________________________ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos __________________________________________________ _______________ Hotmail: Trusted email with Microsoft’s powerful SPAM protection. https://signup.live.com/signup.aspx?id=60969 _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos |
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