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I have been working trying to setup VPN access from my Slack box to a Windows VPN. I have setup PPTP and am able to connect to the VPN but am unable to ping a machine on the other side of the tunnel.
Here is the output of tail /var/log/messages after I call the VPN. It appears I am connected.
Feb 7 10:32:10 AXE pppd: CHAP authentication succeeded
Feb 7 10:32:10 AXE pppd: MPPE 128-bit stateless compression enabled
Feb 7 10:32:11 AXE pppd: local IP address 10.22.37.51
Feb 7 10:32:11 AXE pppd: remote IP address 10.22.127.1
However, now when I try to ping a machine within the VPN it fails. Any idea what I could be missing?
Thanks all for the info. BSDUNIX you hit the nail on the head, pings are disabled on the network I am trying to connect.
I so I moved forward with thecarpy's suggestion to add the entry to the route table, and then attempted to connect to my
workstation using VNC, however the connection timed out and failed. I am unable to determine why this could be, so I have
included my routing table below. Does everything look ok?
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.22.127.1 * 255.255.255.255 UH 0 0 0 ppp0
localnet * 255.255.255.0 U 0 0 0 eth0
10.22.0.0 10.22.127.1 255.255.0.0 UG 0 0 0 ppp0
loopback * 255.0.0.0 U 0 0 0 lo
default 192.168.1.1 0.0.0.0 UG 1 0 0 eth0
Thanks for all the help! I now have VPN and VNC working. It turns out that the issue was related to routing. It turns out that the machine I was trying to remote to was on a different subnet, so I had to change the route to allow for this. Thanks again.
I am facing almost the same issues (so I am posting here even though the thread is pretty old). I have Slackware64 13 installed and I am trying to connect to my university pptp vpn server. The instructions on the universities webpage specifically mention that "You _must_ disable EAP in the list of Authentication methods. You also _must_ enable the Use Point-to-Point encryption (MPPE) option."
So far I think that I can connect, however I cannot ssh/ping any machine across the tunnel. The output of pppd call cseVPN dump debug logfd 2 nodetach require-mppe is