From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Riho Randla" Subject: iptables and suddenly refused connections for vpn Date: Mon, 14 Oct 2002 13:15:31 +0300 Sender: netfilter-admin@lists.netfilter.org Message-ID: <01b601c2736a$a13c0cb0$c300a8c0@VAIO> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: Errors-To: netfilter-admin@lists.netfilter.org List-Help: List-Post: List-Subscribe: , List-Id: List-Unsubscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" To: netfilter@lists.netfilter.org Hi, Can enybody suggest how I could track down a problem with sometimes refused connections? Couple of times a week nobody can make a vpn connection to our poptop vpn server. In /var/log/messages I get the following error: pptpd[4374]: GRE: read(fd=5,buffer=8055a20,len=8260) from network failed: status = -1 error = Connection refused When I restart my firewall everithing gets ok for a while again. How to find out what's going on with the pptpd or iptables (or maybe with the kernel)? And how to understand the components of the message from pptpd? I guess the problem is not in pptp, as restarting the firewall rules solves the issue.