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Questions tagged [pptp]

Point-To-Point Tunnelling Protocol is an insecure, obsolete networking protocol which exposes a layer 2 tunnel. It uses a TCP connection for control communications and a GRE tunnel for the actual data. It was historically used to create VPNs.

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What IPTables settings are needed to allow multiple clients to tunnel through a VPN

I'm trying to lock down my VPS but still allow PPTP-VPN access and am running into a snag. Hoping someone may be able to offer input. Basically trying to figure out what part of my iptables is preventing multiple clients from tunneling out into…
filmoreha
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Can the ASA 5505 use pptp as the VPN type? If so does anyone have a link to a config example?

I'm migrating from a PIX to a ASA and the PIX has the remote users PPTP to it. This is not pass though but the VPN type of the PIX. Does the ASA even support this? I have been trying to search around but all I have found is for allowing PPTP pass…
evolvd
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Connection fails to a PPTP server

I am having some problems connecting to my PPTP server. Sometimes I connect just fine but if I try in a few minutes, the connection may fail. I am connecting to Ubuntu 10.04 from Ubuntu 11.04 with no firewall from both sides. Here is my PPTP server…
Andrew
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Configure IPTables to block specific ports on VPN Disconnect?

I am using the latest Ubuntu distribution... and I have a rather spotty VPN connection. I am using the default Network Manager application that came with Ubuntu. I am having trouble maintaining a connection to my VPN, and that being a separate…
Crowe T. Robot
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Replacing modem with a vpn router

Can I replace an open network iconnect 624 modem with a cisco router in a small network that needs multiple PPTP VPN connection? iconnect 624 modem doesnt allow multple simultaneous PPTP VPN channels? So if i replace this modem with a cisco 881…
ryju
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pptp on linux - I do not want to save passwords to chaps_secrets

I do not like my password to be stored in plain text on linux server. Is there a way to use pptp without storing password to /etc/ppp ?
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What steps can I follow to diagnose why PPTP VPN (rasClient) has suddenly stopped connecting?

I use my a Windows Server 2008 R2 workstation as a VPN client to a Windows 2003 RRAS VPN host. It has worked flawlessly for many months. All of sudden, rasClient stops connecting and throws: Error 651: The modem (or other connecting device) has…
digitalmaps
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PPTP VPN - users cannot access internet via the server (Failing before DNS)

I apologize to be opening another question with such a similar title, but PPTP VPN - users cannot access internet via the server does not quite cover the issue I'm encountering. I have a VPN Server setup through Windows XP. I can successfully…
Nick Heidke
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Strange PPTP Issue

I have a Windows PPTP VPN Tunnell that I connect to. This terminates on a Win2k8 Server. I authenciate fine to the VPN. I can RDP to my admin workstation fine and from this I can RDP to all of the clients I want to connect to. When I try and RDP…
Zapto
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Is it possible to set up a pptp server in windows via console?

I want to be able to turn a machine into a pptp server from commandline so that it can be scripted, is this possible?
Ryan
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Losing DNS when connecting via pptp vpn from a Windows client to a Linux server

I setup pptp on my Linux (CentOS) server. When I connect from a Windows client I am losing name service on the windows side. Connecting to my application works ok, though. I tried to set ms-dns in option-pptp and also to set a DNS server on the…
Michael Diehl
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how to choose secure PPTP password?

I'm running a PPTP server on a ubuntu VPS, which has around 20 users . currently we use passwords like this "bi9_Knh78A#" . is this considered safe ? What's the best method to choose passwords ? How secure is PPTP VPN when passwords are very strong…
Matthew
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Cisco 877 VPN: PPTP encryption not working

A followup to this question. I have a Cisco 877 ADSL router configured (at last!) to act as a VPN server; it supports both PPTP and L2TP VPNs, and I can successfully connect to it from Windows computers using the built-in VPN software. There is only…
Massimo
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PPTP traffic logging

I am running pptpd on a Centos 5 machine but I didnt set up any logging. In case of an abuse, I need to determine which of my users did the bad things, meaning I need to log all the traffic. I may have up to 20 users which will use the VPN…
jon
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Can I assign a different DNS for 192.168.*.*?

I'm trying to connect to my company's network via PPTP VPN from Mac OS X. I had a problem which turned out to be wrong netmask configuration which prevented 192.168.10.16 and 17 DNS servers from being accessible. The gateway IP is 192.168.7.117 and…
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