If you have more than one vpn client behind your linux firewall youneed to use this patch http://www.netfilter.org/projects/patch-o-matic/pom-extra.html#pom-extra-pptp-conntrack-nat Regards, On 1/5/06, Dragomir Todorov <drago@xxxxxxxxxxxxx> wrote:> Hi,> I have a problem with VPN Clients behind firewall..> | Linux> PPTP -+-> Masq and --> Internet --> PPTP> Client | Firewall Server>> The problem is that my PPTP clients behind firewall couldn't connect> here is the system log> pptpd[8688]: GRE: read(fd=6,buffer=804e560,len=8196) from PTY failed:> status = -1 error = Input/output error, usually caused by unexpected> termination of pppd, check option syntax and pppd logs> pptpd[8688]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7)>> And when Clients are directly connected to internet everithing is fine...>> the Linux mashine is with kernel 2.4.29 and iptables 1.3.2> I've read a lot for documents about VPN-Masq and the pach on kernel> 2.2.x but there is nothing about 2.4.29..> Is the problem with masq or enything else?? Please help....>> --> Dragomir Todorov> Network Administrator> Maxcom Ltd. Burgas, Bulgaria> AS34909>>>> --===================== Rodrigo Ribeiro MontoroDesenvolvedor BRMAlinux spooker@xxxxxxxxxx RHCE/LPIC-I=====================
