I use a ASG 320 as HA currently on version 7.300. I have PPTP VPN enabled. I have a problem with on user who is trying to connect his Vista laptop via his home ADSL connection. Sometimes it works, sometimes not. If it doesn't work it does so for hours. This is a part of the PPTP daemon log when it fails:
2008:09:03-19:30:44 (none) pptpd[32370]: CTRL: Client 192.168.5.225 control connection started
2008:09:03-19:30:44 (none) pptpd[32370]: CTRL: Starting call (launching pppd, opening GRE)
2008:09:03-19:30:44 (none) pppd-pptp[32371]: Plugin /usr/sbin/aua.so loaded.
2008:09:03-19:30:44 (none) pppd-pptp[32371]: AUA plugin initialized.
2008:09:03-19:30:44 (none) pppd-pptp[32371]: Plugin /usr/sbin/aua.so loaded.
2008:09:03-19:30:44 (none) pppd-pptp[32371]: AUA plugin initialized.
2008:09:03-19:30:44 (none) pppd-pptp[32371]: pppd 2.4.3 started by (unknown), uid 0
2008:09:03-19:30:44 (none) pppd-pptp[32371]: Starting negotiation on /dev/ttyp0
2008:09:03-19:30:44 (none) pptpd[32370]: GRE: Bad checksum from pppd.
2008:09:03-19:31:14 (none) pppd-pptp[32371]: LCP: timeout sending Config-Requests
2008:09:03-19:31:14 (none) pppd-pptp[32371]: Connection terminated.
2008:09:03-19:31:14 (none) pppd-pptp[32371]: Starting negotiation on /dev/ttyp0
2008:09:03-19:31:14 (none) pppd-pptp[32371]: tcflush failed: Bad file descriptor
2008:09:03-19:31:14 (none) pppd-pptp[32371]: tcsetattr: Invalid argument (line 1001)
2008:09:03-19:31:14 (none) pppd-pptp[32371]: Exit.
2008:09:03-19:31:14 (none) pptpd[32370]: GRE: read(fd=6,buffer=8058640,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs
2008:09:03-19:31:14 (none) pptpd[32370]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7)
2008:09:03-19:31:14 (none) pptpd[32370]: CTRL: Reaping child PPP[32371]
2008:09:03-19:31:14 (none) pptpd[32370]: CTRL: Client 192.168.5.225 control connection finished
And this is when it works:
2008:09:03-20:21:02 (none) pptpd[1351]: CTRL: Client 192.168.5.225 control connection started
2008:09:03-20:21:02 (none) pptpd[1351]: CTRL: Starting call (launching pppd, opening GRE)
2008:09:03-20:21:02 (none) pppd-pptp[1352]: Plugin /usr/sbin/aua.so loaded.
2008:09:03-20:21:02 (none) pppd-pptp[1352]: AUA plugin initialized.
2008:09:03-20:21:02 (none) pppd-pptp[1352]: Plugin /usr/sbin/aua.so loaded.
2008:09:03-20:21:02 (none) pppd-pptp[1352]: AUA plugin initialized.
2008:09:03-20:21:02 (none) pppd-pptp[1352]: pppd 2.4.3 started by (unknown), uid 0
2008:09:03-20:21:02 (none) pppd-pptp[1352]: Starting negotiation on /dev/ttyp0
2008:09:03-20:21:02 (none) pptpd[1351]: GRE: Bad checksum from pppd.
2008:09:03-20:21:05 (none) pptpd[1351]: CTRL: Ignored a SET LINK INFO packet with real ACCMs!
2008:09:03-20:21:07 (none) pppd-pptp[1352]: Using interface ppp0
2008:09:03-20:21:07 (none) pppd-pptp[1352]: MPPE 128-bit stateless compression enabled
2008:09:03-20:21:07 (none) pppd-pptp[1352]: Cannot determine ethernet address for proxy ARP
2008:09:03-20:21:07 (none) pppd-pptp[1352]: local IP address 192.168.5.65
2008:09:03-20:21:07 (none) pppd-pptp[1352]: remote IP address 192.168.5.66
2008:09:03-20:21:08 (none) pppd-pptp[1355]: id="2201" severity="info" sys="SecureNet" sub="vpn" event="Connection started" username="Sigma" variant="pptp" srcip="192.168.5.225" virtual_ip="192.168.5.66"
2008:09:03-20:27:38 (none) pppd-pptp[1352]: LCP terminated by peer (+M-V6[^@ 2008:09:03-19:31:14 (none) pppd-pptp[32371]: LCP: timeout sending Config-Requests
I only have this problem with that particular user. Somebody else using the same account does not report such issues. What can I do about it ?
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