Date: Sun, 18 Jan 2015 23:22:47 +0000
From: Mindaugas Rasiukevicius <rmind%netbsd.org@localhost>
To: 6bone%6bone.informatik.uni-leipzig.de@localhost
Cc: current-users%netbsd.org@localhost
Subject: Re: DoS attack against TCP services
6bone%6bone.informatik.uni-leipzig.de@localhost wrote:
Hello,
it was launched a DoS attack against my server. The attacker opened ssh
connections from different servers until all sockets are use.
I have stopped the ssh service and terminates all processes.
Unfortunately, all TCP connections are now in the TIME_WAIT state.
bash-4.3 # netstat -a -n | grep TIME_WAIT | wc -l
34611
Is there a way to remove it without rebooting the server?
tcpdrop(8)?