Fernando de Oliveira wrote: > Hi, Bruce, > > I believe the problem is solved. A device was using same ip,
That would do it. > When you are back, please, is there a way of having ping working and > not being vulnerable to a DoS attack? A DoS attack is difficult to defend against, especially if there are a lot of systems with different IPs in a botnet sending a lot of TCP requests to overload a system. About the only thing that a target system can do is limit the number of connections. Some examples are described in http://www.cyberciti.biz/faq/iptables-connection-limits-howto/ http://www.cyberciti.biz/tips/howto-limit-linux-syn-attacks.html -- Bruce -- http://linuxfromscratch.org/mailman/listinfo/blfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page
