Re: problem getting client to connect via pptpd

[email protected] Mon, 07 Jan 2013 18:50:20 +0000
Newsgroups gmane.network.poptop
Message-ID <[email protected]>
> I would maybe refine that tcpdump command a little bit to get rid of all
> the DNS translation stuff.  On your remote system - find out its public
> IP Address.  You can do this by going to http://www.whatismyip.com on
> the remote system.

Attached log (I hope I ran it correctly):
# tcpdump -nnvvS src 86.15.xx.xxx and not dst port 22 and not src port 22
tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size  
65535 bytes
19:45:33.199844 IP (tos 0x20, ttl 50, id 3811, offset 0, flags [DF],  
proto TCP (6), length 64)
     86.15.xx.xxx.49179 > 84.246.xxx.xx.1723: Flags [S], cksum 0xc14b  
(correct), seq 3634391041, win 65535, options [mss 1460,nop,wscale  
4,nop,nop,TS val 552703150 ecr 0,sackOK,eol], length 0
19:45:33.233800 IP (tos 0x20, ttl 50, id 45783, offset 0, flags [DF],  
proto TCP (6), length 52)
     86.15.xx.xxx.49179 > 84.246.xxx.xx.1723: Flags [.], cksum 0xe3f3  
(correct), seq 3634391042, ack 2939173752, win 8235, options  
[nop,nop,TS val 552703198 ecr 1834919091], length 0
19:45:33.237952 IP (tos 0x20, ttl 50, id 51673, offset 0, flags [DF],  
proto TCP (6), length 208)
     86.15.xx.xxx.49179 > 84.246.xxx.xx.1723: Flags [P.], cksum 0x8b32  
(correct), seq 3634391042:3634391198, ack 2939173752, win 8235,  
options [nop,nop,TS val 552703203 ecr 1834919091], length 156: pptp  
Length=156 CTRL-MSG Magic-Cookie=1a2b3c4d CTRL_MSGTYPE=SCCRQ  
PROTO_VER(1.0) FRAME_CAP(A) BEARER_CAP(A) MAX_CHAN(0) FIRM_REV(0)  
HOSTNAME() VENDOR()
19:45:33.302887 IP (tos 0x20, ttl 50, id 37347, offset 0, flags [DF],  
proto TCP (6), length 52)
     86.15.xx.xxx.49179 > 84.246.xxx.xx.1723: Flags [.], cksum 0xe23b  
(correct), seq 3634391198, ack 2939173908, win 8225, options  
[nop,nop,TS val 552703266 ecr 1834919161], length 0
19:45:33.310162 IP (tos 0x20, ttl 50, id 31390, offset 0, flags [DF],  
proto TCP (6), length 220)
     86.15.xx.xxx.49179 > 84.246.xxx.xx.1723: Flags [P.], cksum 0xb78c  
(correct), seq 3634391198:3634391366, ack 2939173908, win 8225,  
options [nop,nop,TS val 552703266 ecr 1834919161], length 168: pptp  
Length=168 CTRL-MSG Magic-Cookie=1a2b3c4d CTRL_MSGTYPE=OCRQ  
CALL_ID(60014) CALL_SER_NUM(0) MIN_BPS(300) MAX_BPS(100000000)  
BEARER_TYPE(Any) FRAME_TYPE(E) RECV_WIN(64) PROC_DELAY(0)  
PHONE_NO_LEN(0) PHONE_NO() SUB_ADDR()
19:45:33.361851 IP (tos 0x20, ttl 50, id 54947, offset 0, flags [DF],  
proto TCP (6), length 52)
     86.15.xx.xxx.49179 > 84.246.xxx.xx.1723: Flags [.], cksum 0xe105  
(correct), seq 3634391366, ack 2939173940, win 8223, options  
[nop,nop,TS val 552703322 ecr 1834919217], length 0
19:45:33.368607 IP (tos 0x20, ttl 50, id 56246, offset 0, flags [DF],  
proto TCP (6), length 76)
     86.15.xx.xxx.49179 > 84.246.xxx.xx.1723: Flags [P.], cksum 0x83bc  
(correct), seq 3634391366:3634391390, ack 2939173940, win 8223,  
options [nop,nop,TS val 552703331 ecr 1834919217], length 24: pptp  
Length=24 CTRL-MSG Magic-Cookie=1a2b3c4d CTRL_MSGTYPE=SLI  
PEER_CALL_ID(1664) SEND_ACCM(0xffffffff) RECV_ACCM(0xffffffff)
19:45:54.028486 IP (tos 0x20, ttl 50, id 26335, offset 0, flags  
[none], proto TCP (6), length 40)
     86.15.xx.xxx.49179 > 84.246.xxx.xx.1723: Flags [.], cksum 0xe2e1  
(correct), seq 3634391389, ack 2939173940, win 8223, length 0
19:46:03.522315 IP (tos 0x20, ttl 50, id 50611, offset 0, flags [DF],  
proto TCP (6), length 52)
     86.15.xx.xxx.49179 > 84.246.xxx.xx.1723: Flags [.], cksum 0xf5d4  
(correct), seq 3634391390, ack 2939173941, win 8223, options  
[nop,nop,TS val 552733442 ecr 1834949280], length 0
19:46:03.695836 IP (tos 0x20, ttl 50, id 21716, offset 0, flags [DF],  
proto TCP (6), length 52)
     86.15.xx.xxx.49179 > 84.246.xxx.xx.1723: Flags [F.], cksum 0xf527  
(correct), seq 3634391390, ack 2939173941, win 8223, options  
[nop,nop,TS val 552733614 ecr 1834949280], length 0
^C
10 packets captured
16 packets received by filter
0 packets dropped by kernel
[root@jason ~]#



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