Hello, I'm trying to set up VPN server on FC5.. Using software: kernel-smp-2.6.17-1.2174_FC5 ppp-2.4.3-6.2.1 pptpd-1.3.3-1.fc5 config files: __ /etc/pptpd.conf option /etc/ppp/options.pptpd debug localip 10.25.100.10 remoteip 172.16.10.1-100 __ /etc/ppp/options.pptpd name pptpd lock auth require-chap nodefaultroute nodeflate nobsdcomp nomppe __ /etc/ppp/chap-secrets test * test * --- Loaded modules: ... ip_gre ip_conntrack_pptp ppp_async ppp_generic ... On other FC box, I'm trying to up vpn link (only testing): #pptp 10.25.100.10 name test In /var/log/message on VPN server: ... pptpd[4405]: CTRL: Client 10.25.100.100 control connection started pptpd[4405]: CTRL: Starting call (launching pppd, opening GRE) pptpd[4405]: GRE: Bad checksum from pppd. pptpd[4405]: GRE: read(fd=9,buffer=8059660,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[4405]: CTRL: PTY read or GRE write failed (pty,gre)=(9,10) pptpd[4405]: CTRL: Client 10.25.100.100 control connection finished ... Any ideas? -- Sergey Smirnov green@xxxxxxxxxx IM:green@xxxxxxxxxxxxxxxxx