[pptp-server] Re: http://www.vibres.com/pptpd/example.html

[Robert Dege]

I remember getting this error as well.  Of course, I was behind a
firewall at the time.  It ended up being that the IP protocol was being
blocked between the PPTP server & Client.  The server was sending out
the packets, but they never made it past the firewall.

I did a tcpdump & was able to watch the incoming & outgoing packets:

/usr/sbin/tcpdump -i eth0 port 1723
/usr/sbin/tcpdump -i eth0 proto 47


-Rob

=============================
Jan 23 16:23:29 kgsnt3 pptpd[3083]: MGR: Launching /usr/sbin/pptpctrl to 
handle client 
Jan 23 16:23:29 kgsnt3 pptpd[3083]: CTRL: pppd speed = 115200 
Jan 23 16:23:29 kgsnt3 pptpd[3083]: CTRL: Client 161.142.230.54 control 
connection started 
Jan 23 16:23:29 kgsnt3 pptpd[3083]: CTRL: Received PPTP Control Message 
(type: 1) 
Jan 23 16:23:29 kgsnt3 pptpd[3083]: CTRL: Made a START CTRL CONN RPLY
packet 
Jan 23 16:23:29 kgsnt3 pptpd[3083]: CTRL: I wrote 156 bytes to the
client. 
Jan 23 16:23:29 kgsnt3 pptpd[3083]: CTRL: Sent packet to client 
Jan 23 16:23:29 kgsnt3 pptpd[3083]: CTRL: Received PPTP Control Message 
(type: 7) 
Jan 23 16:23:29 kgsnt3 pptpd[3083]: CTRL: 0 min_bps, 0 max_bps, 32
window 
size 
Jan 23 16:23:29 kgsnt3 pptpd[3083]: CTRL: Made a OUT CALL RPLY packet 
Jan 23 16:23:29 kgsnt3 pptpd[3083]: CTRL: Starting call (launching pppd, 
opening GRE) 
Jan 23 16:23:29 kgsnt3 pptpd[3083]: CTRL: pty_fd = 4 
Jan 23 16:23:29 kgsnt3 pptpd[3083]: CTRL: tty_fd = 5 
Jan 23 16:23:29 kgsnt3 pptpd[3084]: CTRL (PPPD Launcher): Connection
speed = 
115200 
Jan 23 16:23:29 kgsnt3 pptpd[3083]: CTRL: I wrote 32 bytes to the
client. 
Jan 23 16:23:29 kgsnt3 pptpd[3083]: CTRL: Sent packet to client 
Jan 23 16:23:29 kgsnt3 pppd[3084]: pppd 2.3.11 started by root, uid 0 
Jan 23 16:23:29 kgsnt3 pppd[3084]: Using interface ppp0 
Jan 23 16:23:29 kgsnt3 pppd[3084]: Connect: ppp0 <--> /dev/pts/0 
Jan 23 16:23:29 kgsnt3 pppd[3084]: sent [LCP ConfReq id=0x1 <asyncmap
0x0> 
<auth chap MD5> <magic 0x489aa0d0> <pcomp> <accomp>] 
Jan 23 16:23:29 kgsnt3 pppd[3084]: Timeout 0x80503d4:0x80784c0 in 3
seconds. 
Jan 23 16:23:32 kgsnt3 pppd[3084]: sent [LCP ConfReq id=0x1 <asyncmap
0x0> 
<auth chap MD5> <magic 0x489aa0d0> <pcomp> <accomp>] 
....."last message repeated 9 times"