Point-To-Point Tunnelling Protocol is a 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 is typically used to create VPNs.

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Unable to setup PPTP VPN on SUSE Enterprise 11

I am new to Linux, however I will try to convey my question the best I can. Right now we are using Windows Server 2003 as a DHCP server. It also has PPTP VPN installed. Users can get to VPN outside ...
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190 views

Access My Server From External Net IP While Server is Using PPTP [closed]

I have one physical Ubuntu server where I'm using PPTP with HMA for tormenting (using Deluge) and hosting the Deluge Web-UI, Ajenti and Ajaxplorer. While PPTP is engaged I can access my three web-UIs ...
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1answer
209 views

PPTP server remote IP assignment causing problems

Our PPTP vpn server (Ubuntu) is working as it's supposed to, but because of the way it assigns remote IP addresses it's causing some problems with our other software. Example: machine A joins the VPN ...
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174 views

linux PPTP server custom authentication script

Suppose I have a lot of PPTP VPN servers and I want a good way of authenticating users. Each user must be able to create a maximum of 2 concomitant connections to any given server. With the current ...
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3answers
335 views

Logging OpenVPN/PPTP connections

I currently have a default setup of OpenVPN and PPTP. I was wondering how I can enable the most verbose logging of the services so in case of abuse we can track down who's IP did what?
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1answer
222 views

Ensure PPTP / OpenVPN clients cannot interact with each other?

How can one ensure that PPTP / OpenVPN will not allow clients connected to the tunnels to be able to interact with each others? I never enabled bridging and enabled the following in iptables ...
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1answer
482 views

How can i create a point to point connection?

We have a measurement campaign in a field, until now we had the following network structure The distance was 400m between the two points so the most easy solution was to use a Wifi pont to point ...
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2answers
3k views

How to view pptpd clients?

I have installed pptpd in my linode vps, and setup a few client accounts. The problem is how could I view current connected pptpd clients in commandline?
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1answer
86 views

VPN and Lan visibility

I have enabled VPN pass-through and configured our router to forward pptp port (1723) data to go to our linux server running pppd and pptpd, this works, I can establish the connexion using my windows ...
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1answer
1k views

How to disconnect pptp client?

How to disconnect pptp client connected to Cent OS 6.2 server from the server side ? ifdown ppp0 doesn't work.
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1answer
759 views

how to manually setup pptp vpn in linux?

I tried to setup the pptp vpn in ubuntu i.e /etc/ppp/peers/myvpn Its contents are pty "pptp <host> --nolaunchpppd" name myusername remotename myvpn linkname myvpn ipparam myvpn usepeerdns ...
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1answer
2k views

PPTP VPN connections stops working after period of time

I have a client with an SBS 2011 server which is acting as a PPTP VPN server that is having difficulty maintaining working VPN connections to their server for remote workers. Client machines are able ...
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2answers
4k views

Windows Server VPN: Error 720

I want to created vpn server on Windows Server 2012. First I installed Active Directory domain services, then Remote Access server role. Opened Gettng Started Wizard, entered configure just vpn. Then ...
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1answer
226 views

What is my local address on the router when connected through PPTP?

I have just set up my very first VPN this week allowing me to connect to work (this way, I get to work from home, which was worth the effort). As through magic, it now works, and I'm sending this ...
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1answer
118 views

How to forward gateway requests for a subnet through another connection under Linux

I have a Debian machine acting as a DHCP server/NAT, connected via PPTP to another machine,connected to a subnet 10.0.0.0. How do I configure it so requests from clients on this machine for the ...
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2answers
97 views

Failsafe VPN solution?

I need to set up a VPN. I experimented with PPTP, but I got a lot of problems. VPN connection doesn't work behind some routers or mobile / wifi connections. So I'm looking for a failsafe VPN ...
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1answer
146 views

puzzled by VPN, can not see machines in network

I have set up a VPN tunnel between office and rackspace, this all works and i can access my servers by there local IP. However i wish to remove ALL remote access away, so have created a VPN tunnel ...
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0answers
447 views

VPN (PPTP with MPPE 128) + SMB2 -> plain text transmissions?

Setup: I have a simple test setup: PC (Win7) and Server (Win Server 2008) and I open a VPN tunnel between the two of them via PPTP (encrypted with MPPE 128). The server has a shared folder that the ...
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0answers
201 views

Cannot resolve domain over VPN

I have setup a VPN server at UK and connected it from my PC. The problem is my PC cannot resolve some domains like twimg.com paypal.com etc. Does these servers denies VPN servers or especially my IP ...
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1answer
759 views

PPTP VPN support IPv6 over IPv4 [duplicate]

My Server has both IPv4 and IPv6 and I've set up an PPTP VPN there. And my local network only supports IPv4. How can I gain IPv6 access by dialing in my VPN with IPv4? That means, is it possible to ...
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458 views

Local computers can't discover computers connected via VPN - windows server 2008 r2

I have Server 2008 R2 set up on a local network with RRAS, NAT and VPN enabled. One NIC leads to the internet, with a WAN IP. Second NIC leads to my internal network. The internal network consists of ...
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1answer
7k views

PPTP IPTables routing issue

PPTP connects just fine to the radius server PPTP modules are loaded into the kernel PPTP connects fine to the pptp service Question: How do I get the PPTP to connect to the internet? IPTables: ...
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497 views

PPTP won't connect error 628

vim /etc/ppp/chap-secrets # Secrets for authentication using CHAP # client server secret IP addresses #* pptpd 34fg3g93jgij3g * and vim /etc/radiusclient/servers ...
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1answer
6k views

pppd “peer refused to authenticate”

I have a working pptpd+pppd server configured which currently has two Windows 7 clients successfully connecting. However, when I try to connect a linux client I'm getting a really weird exchange that ...
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1answer
1k views

PPTPd - configuration error?

an 5 01:09:12 vpn pptpd[1832]: GRE: read(fd=6,buffer=611860,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax ...
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1answer
143 views

iptables error on pptp

root@pptp [~]# iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE iptables: Unknown error 18446744073709551615 This is an openVZ box. Is there a way to bypass that? This is the MASQUERADE that is ...
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1answer
491 views

Possible to connect to VPN (pptp) with a host name

I have a few computers that I need to connect to a VPN. Right now, I have to manually check to see what IP address the VPN assigned each computer so that I can SSH into each later. Ideally, it would ...
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2answers
2k views

Unable to PPTP through NAT on Cisco 881

I'm trying to connect to a PPTP server which is sat behind a Cisco 881 NAT router. The server is running Ubuntu Server 12.04 and is running Poptop pptpd as the PPTP daemon listening for connections. ...
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179 views

Multiple Devices connecting to VPN on CentOS server

I am looking for a solution as to what would be the VPN software for multiple OSes and Devices. I currently have 15 systems to connect to a VPN. I was using Hamachi from LogMeIn but their lack of ...
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1answer
866 views

PPTP installation on CentOS 5 not working (Kernel support for PPP?)

I am trying to get PPTP installation up and running on my VPS. I have followed various guides, however, I am unable to connect to the VPN once it’s setup. I checked my VPS’ /var/log/messages and I ...
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2answers
143 views

Can a NAT close out VPN connections?

I have a client running on a VPN behind a NAT. The client becomes inaccessible after a while if it is not "active". The VPN software is PPTP and the OS of the client if Debian. I'm unsure about ...
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1answer
799 views

Split tunnel VPN with pptp-linux

I have a client installed with pptp-linux. I would like for it to be connected to a VPN (for VPN resources) as well as be connected to the internet for normal web browsing. I know this is not as ...
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1answer
190 views

PPTP VPN Windows Server 2008 Enterprise [closed]

I have a few questions that I hope that you guys can answer, so here goes. I am running Windows Server 2008 enterprise in my HOME network inside of vmware workstation. I am running this on my home ...
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1answer
3k views

VPN setup on mikrotik router

I have successfully setup a pptp vpn server on a Mikrotik routerboard. I am able to connect to the VPN and can successfully access a certain IP range. This is my setup: ADSL modem/router - mikrotik ...
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3answers
6k views

PFsense VPN all types failing?

I am trying to configure a new PFsense router (64 bit) and am trying to to get the VPN functions working. I have enabled PPTP, L2TP and IPSec. I've added allow all rules to all LAN's, WAN's and each ...
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1answer
361 views

Installing VPN servers that support PPTP, L2TP and openVPN protocols [closed]

Looking for VPN Server that support PPTP, L2TP and OpenVPN Protocols, also these servers must use the same data base so each account created on any of these servers must work across all the other ...
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47 views

Debian PPTPD Misunderstanding

I have just installed pptpd on a debian server, configured the ip to 10.0.0.1 and started the service. The service appears to be running on eth0: gl.ob.al.ip:1723, which is as expected. However I ...
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2answers
111 views

Web traffic go through standard internet connection and other traffic through VPN

I am deploying a set of computers to a diverse set of geographical locations. However, I still need to be able to ssh into them to do updates. Once deployed, I would like all the standard internet ...
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3answers
3k views

Setting up a VPN on Windows 2008 R2, should I use PPTP or SSTP?

I'm setting up a VPN test server, on Windows 2008 R2. I seem to remember that PPTP isn't ideal, as on a Cisco firewall you need to allow quite a large range of ports open (with the GRE protocol too?) ...
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372 views

Setting up Squid -> VPN connection

I recently purchased a VPS and am wanting to use it as a VPN server. However, it has bandwidth limitations. So, I figured since I already have a local Squid proxy caching things for me, I could have ...
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1answer
8k views

Cannot determine ethernet address for proxy ARP on PPTP

I installed pptp server on a centos 6 64bit server PPTP Server ip : 55.66.77.10 PPTP Local ip : 10.0.0.1 Client1 IP : 10.0.0.60 Centos5 64bit Client2 IP : 10.0.0.61 Centos5 64bit PPTP Server can ...
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2answers
1k views

Accessing guests on virtual network when connected to host via PPTP

I'm setting up a development machine which runs Ubuntu 12.04 and KVM for virtualization. I have a guest running Ubuntu 12.04 which can be accessed from the host via its IP address which is assigned by ...
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0answers
5k views

PPTP VPN Not Working - Peer failed CHAP authentication, PTY read or GRE write failed

Brand-new install of CentOS 6.3. Followed this guide: http://www.members.optushome.com.au/~wskwok/poptop_ads_howto_1.htm And I got PPTPd running [v1.3.4]. I got the VPN to authenticate users against ...
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1answer
4k views

PPTP VPN server: two connections from the same IP address, but different devices?

I have two shops and the office. Shops are connected to the internet via same internet provider, but they are in the different parts of the city and use different connections of course. This internet ...
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1answer
367 views

cisco 2911/k9 pptp server limit clients

How to view, how much clients can connect to 2911/k9 by vpdn(pptp) at same time? Which ios is need to enable mppe on 2911/k9?
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2answers
1k views

Connect linux server to VPN server via PPTP

I'm trying to connect a Linux (Ubuntu 10.04 LST) server to a VPN server via the PPTP client to an VPN server. I configured the PPTP client as said in the documentation. The connection is correctly ...
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4answers
6k views

How can I force all internet traffic over a PPTP VPN but still allow local lan access?

I have a server running Linux Mint 12 that I want to keep connected to a PPTP VPN all the time. The VPN server is pretty reliable, but it drops on occasion so I just want to make it so all internet ...
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1answer
749 views

Masquerading IP to get internet working on VPN

I set up a pptp VPN server on a debian-squeeze server just fine, I can connect to it from Windows 7, but pinging any external hosts (like google.com) fails. Pinging 10.0.0.1 or 10.0.0.10 works as ...
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737 views

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 ...
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1answer
217 views

Have some questions about setting up a VPN to my private cloud servers

TLDR: I wish to VPN to our cloud servers. Is there any free VPN server software that runs on W2K8? No, I don't want to : Download 3rd party software for the -clients- (We want to use the built in ...