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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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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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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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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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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218 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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111 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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93 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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140 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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428 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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194 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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709 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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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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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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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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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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964 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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141 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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462 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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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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172 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
850 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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142 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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738 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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183 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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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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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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351 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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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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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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349 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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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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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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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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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
349 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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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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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
709 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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697 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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215 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 ...
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532 views

Allow VPN to external site through ISA 2006 firewall

I'v followed the instrutions from here, but still it doesn't connect. (while the VPN setup does work when I try via my home network) http://support.microsoft.com/?scid=kb;en-us;838245 When I try ...
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1answer
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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 ...
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Windows VPN - NO internet access

I host a network of servers behind a Fortigate 200a firewall in the DC. I connect to those servers via a VPN connection. The problem is that when i connect to the VPN, I lose my internet connection ...
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957 views

How do I make servers visible on my VPN?

I'm tinkering with web servers on Rackspace, trying to figure out if I can set up a website with public parts and also private parts that are visible only via a VPN connection. I have 2 servers ...
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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 ...
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525 views

How can I ensure home VPN users don't save connection password?

We are using a PPTP VPN, on Windows RAS/Server 2003. We have users verify anti-virus patching, and then after verification grant access to the VPN. We don't use a CMAK applet, we just provide users ...
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2answers
845 views

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 ...
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1answer
101 views

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? ...
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455 views

DELL DRAC & Ubuntu VPN Connection

I am trying to connect to a DELL DRAC card without success by Ubuntu VPN Connection Manager. I have these data: Protocol: PPTP SERVER IP PPTP: 1233.123.123.123 DRAC IP: 192.168.10.25 Subnet: ...