[pptp-server] error 650 from behind linux masq box

Kenneth E. Lussier kenlussier at mediaone.net
Mon Jul 31 20:34:05 CDT 2000


on the Linux firewall, you need to patch the kernel with John
Hardens VPN masquerade patch (http://www.wolfenet.com/~jhardin).
Also read the VPN Masquerade HOWTO. After the patch and kernel
recompile, you need to add rules to the ipchains script to allow
protocol 47 through.


Kenny
 
Bill Pitz wrote:
> 
> I'm trying to configure pptp so I can connect my laptop to my home network
> while I am at work.
> 
> At home, I have a Linux box running IP masquerading with several windows
> PCs behind it. (I would like to be able to access files on these Windows
> PCs remotely)
> 
> At work, we have a Linux firewall which runs IP Masquerading for all of
> the workstations.
> 
> When I try to connect from behind the linux firewall at work, I get error
> 650 on the windows machine.  The info in pptpd.log is as follows:
> --
> Jul 31 16:47:49 explosion pppd[4386]: pppd 2.3.7 started by root, uid 0
> Jul 31 16:47:49 explosion pppd[4386]: Using interface ppp0
> Jul 31 16:47:49 explosion pppd[4386]: Connect: ppp0 <--> /dev/pts/1
> Jul 31 16:47:49 explosion pppd[4386]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> <a
> uth chap MD5> <magic 0x326b7dcc> <pcomp> <accomp>]
> Jul 31 16:48:17 explosion last message repeated 9 times
> Jul 31 16:48:20 explosion pppd[4386]: LCP: timeout sending Config-Requests
> Jul 31 16:48:20 explosion pppd[4386]: Connection terminated.
> Jul 31 16:48:20 explosion pppd[4386]: Connect time 0.6 minutes.
> Jul 31 16:48:20 explosion pppd[4386]: Exit.
> --
> 
> Any ideas as to what this could be?  I know that things are set up correctly
> because I can connect fine if I place myself on the other side of the Linux
> firewall and try to connect from a "real" IP address.  Is there anything you
> know of that needs to be changed in the Masq config to get things working?
> (Or will it work at all?)  I can see port 1723 through the firewall, fwiw.
> 
> Thanks in advance for any help you can provide...
> 
> -Bill
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