[pptp-server] GRE problems ??

[Philip L. Butler]

Hi,

I have been trying on and off to get pptpd to work.  I am using a 
Windows 98 with stock Micro$oft VPN adapter stuff and pptpd on 
Slackware (kernel 2.0.33).  It seems to be authenticating as it gives 
an appropriate message when I key in the wrong password, but when I 
key in the correct username/password, the Win98 system says 
"Connection was terminated.  Do you want to reconnect ?"

The logs from my system are below.  I have to admit a stupid one -- 
what is GRE ??  I have seen reference to it on this list but have to 
admit I have never heard of the term.  Does anyone have a clue as to 
what my problem may be and how to get around it ??

Many Thanks,

Phil Butler
butler at dii.net



 From syslog file....
********************
Sep  7 16:11:11 gs pptpd[742]: GRE: read(fd=5,buffer=804d448,len=8196) from PTY
failed: status = -1 error = I/O error
Sep  7 16:11:11 gs pptpd[742]: CTRL: PTY read or GRE write failed 
(pty,gre)=(5,6
)


 From pptpd.log (I have it's log going to a separate file)
*********************************************************
Sep  7 16:11:09 gs pptpd[742]: CTRL: Client 192.168.0.50 control 
connection started
Sep  7 16:11:09 gs pptpd[742]: CTRL: Starting call (launching pppd, 
opening GRE)
Sep  7 16:11:09 gs pptpd[742]: CTRL: Allocating pty/tty pair
Sep  7 16:11:09 gs pptpd[742]: CTRL: Allocated pty/tty pair 
(/dev/ptyp0,/dev/ttyp0)
Sep  7 16:11:10 gs pppd[743]: pppd 2.3.8 started by root, uid 0
Sep  7 16:11:10 gs pppd[743]: Using interface ppp0
Sep  7 16:11:10 gs pppd[743]: Connect: ppp0 <--> /dev/ttyp0
Sep  7 16:11:10 gs pppd[743]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> 
<auth chap 81> <magic 0x4fc6cced> <pcomp> <accomp>]
Sep  7 16:11:10 gs pppd[743]: rcvd [LCP ConfReq id=0x1 <asyncmap 
0xa0000> <magic 0x56167> <pcomp> <accomp> < 0d 03 06>]
Sep  7 16:11:10 gs pppd[743]: sent [LCP ConfRej id=0x1 < 0d 03 06>]
Sep  7 16:11:10 gs pppd[743]: rcvd [LCP ConfNak id=0x1 <auth chap 
m$oft> <magic 0x4fc6cced>]
Sep  7 16:11:10 gs pppd[743]: sent [LCP ConfReq id=0x2 <asyncmap 0x0> 
<auth chap m$oft> <magic 0xdfcd02be> <pcomp> <accomp>]
Sep  7 16:11:10 gs pppd[743]: rcvd [LCP ConfReq id=0x2 <asyncmap 
0xa0000> <magic 0x56167> <pcomp> <accomp>]
Sep  7 16:11:10 gs pppd[743]: sent [LCP ConfAck id=0x2 <asyncmap 
0xa0000> <magic 0x56167> <pcomp> <accomp>]
Sep  7 16:11:10 gs pppd[743]: rcvd [LCP ConfAck id=0x2 <asyncmap 0x0> 
<auth chap m$oft> <magic 0xdfcd02be> <pcomp> <accomp>]
Sep  7 16:11:10 gs pppd[743]: sent [CHAP Challenge id=0x1 
<0dc856d518137f21>, name = "servername"]
Sep  7 16:11:10 gs pppd[743]: rcvd [CHAP Response id=0x1 
<bb22854acd79506ebd25533a629913c93ff6c4710454fcdd1e2ea8a05e1486b5babe9 
9d12ce6d76de87cb3edc107d6ec01>, name = "billy"]
Sep  7 16:11:10 gs pppd[743]: Warning - secret file 
/etc/ppp/chap-secrets has world and/or group access
Sep  7 16:11:10 gs pppd[743]: sent [CHAP Success id=0x1 "Welcome to gs."]
Sep  7 16:11:11 gs pptpd[742]: GRE: 
read(fd=5,buffer=804d448,len=8196) from PTY failed: status = -1 error 
= I/O error
Sep  7 16:11:11 gs pptpd[742]: CTRL: PTY read or GRE write failed 
(pty,gre)=(5,6)
Sep  7 16:11:11 gs pptpd[742]: CTRL: Client 192.168.0.50 control 
connection finished
Sep  7 16:11:10 gs pppd[743]: sent [IPCP ConfReq id=0x1 <addr 
10.1.1.2> <compress VJ 0f 01>]
Sep  7 16:11:10 gs pppd[743]: MSCHAP peer authentication succeeded for billy
Sep  7 16:11:10 gs pppd[743]: rcvd [IPCP ConfReq id=0x1 <addr 
0.0.0.0> <ms-dns1 0.0.0.0> <ms-wins 0.0.0.0> <ms-dns3 0.0.0.0> 
<ms-wins 0.0.0.0>]
Sep  7 16:11:10 gs pppd[743]: sent [IPCP ConfRej id=0x1 <ms-dns1 
0.0.0.0> <ms-wins 0.0.0.0> <ms-dns3 0.0.0.0> <ms-wins 0.0.0.0>]
Sep  7 16:11:10 gs pppd[743]: rcvd [CCP ConfReq id=0x1 <mppe 1 0 0 1> 
<lzs 0 1 4>]
Sep  7 16:11:10 gs pppd[743]: sent [CCP ConfReq id=0x1]
Sep  7 16:11:10 gs pppd[743]: sent [CCP ConfRej id=0x1 <mppe 1 0 0 
20> <lzs 0 1 4>]
Sep  7 16:11:10 gs pppd[743]: rcvd [IPCP ConfRej id=0x1 <compress VJ 0f 01>]
Sep  7 16:11:10 gs pppd[743]: sent [IPCP ConfReq id=0x2 <addr 10.1.1.2>]
Sep  7 16:11:10 gs pppd[743]: rcvd [IPCP ConfReq id=0x2 <addr 0.0.0.0>]
Sep  7 16:11:10 gs pppd[743]: sent [IPCP ConfNak id=0x2 <addr 10.1.1.100>]
Sep  7 16:11:10 gs pppd[743]: rcvd [CCP ConfAck id=0x1]
Sep  7 16:11:10 gs pppd[743]: rcvd [CCP ConfReq id=0x2]
Sep  7 16:11:10 gs pppd[743]: sent [CCP ConfAck id=0x2]
Sep  7 16:11:10 gs pppd[743]: rcvd [IPCP ConfAck id=0x2 <addr 10.1.1.2>]
Sep  7 16:11:10 gs pppd[743]: rcvd [IPCP ConfReq id=0x3 <addr 10.1.1.100>]
Sep  7 16:11:10 gs pppd[743]: sent [IPCP ConfAck id=0x3 <addr 10.1.1.100>]
Sep  7 16:11:10 gs pppd[743]: found interface eth0 for proxy arp
Sep  7 16:11:10 gs pppd[743]: local  IP address 10.1.1.2
Sep  7 16:11:10 gs pppd[743]: remote IP address 10.1.1.100
Sep  7 16:11:10 gs pppd[743]: Script /etc/ppp/ip-up started (pid 744)
Sep  7 16:11:10 gs pppd[743]: rcvd [CCP TermReq id=0x3]
Sep  7 16:11:10 gs pppd[743]: CCP terminated by peer
Sep  7 16:11:10 gs pppd[743]: sent [CCP TermAck id=0x3]
Sep  7 16:11:10 gs pppd[743]: Compression disabled by peer.
Sep  7 16:11:11 gs pppd[743]: Script /etc/ppp/ip-up finished (pid 
744), status = 0x0
Sep  7 16:11:11 gs pppd[743]: Terminating on signal 2.
Sep  7 16:11:11 gs pppd[743]: Script /etc/ppp/ip-down started (pid 754)
Sep  7 16:11:11 gs pppd[743]: sent [LCP TermReq id=0x3 "User request"]
Sep  7 16:11:11 gs pppd[743]: rcvd [LCP TermAck id=0x3]
Sep  7 16:11:11 gs pppd[743]: Connection terminated.
Sep  7 16:11:11 gs pppd[743]: Connect time 0.1 minutes.
Sep  7 16:11:11 gs pppd[743]: Sent 376 bytes, received 511 bytes.
Sep  7 16:11:11 gs pppd[743]: Waiting for 1 child processes...
Sep  7 16:11:11 gs pppd[743]:   script /etc/ppp/ip-down, pid 754
Sep  7 16:11:11 gs pppd[743]: Script /etc/ppp/ip-down finished (pid 
754), status = 0x0
Sep  7 16:11:11 gs pppd[743]: Exit.