The Point-to-Point Tunneling Protocol (PPTP) is a method for implementing virtual private networks. PPTP uses a control channel over TCP and a GRE tunnel operating to encapsulate PPP packets.

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pptpd not working externally on Ubuntu Server 11.10

I am trying to set up a pptpd vpn on our newly installed Ubuntu 11.10 64 bit server, but am not having success having a client connect via an iPhone to the VPN. Note that no clients have been able to ...
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2answers
750 views

Linux PPTP VPN server using local account passwords?

Is there a way to configure the PPTP server under Ubuntu 10.04 to allow users to log in with their username/password from the local machine (the Ubuntu server, that is, not where they are connecting ...
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1answer
1k views

Iptables: Selective PPTP VPN routing

I've been able to set up TomatoUSB firmware with Ipredator via PPTP, the configuration is as follows: However, I don't want to use Ipredator PPTP VPN for every machine on my network, how to only ...
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2answers
2k views

PPTPD with PAM authentication?

I need a VPN solution for my company. One requirement is to be able to use the built-in windows VPN client. We are running a Debian Etch server. I've managed to set up PPTPD but the authentication is ...
2
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1answer
383 views

More than 254 client IPs in PPTP (PPTPD)

I'm trying to setup my PPTP to allow more than 255 client connections. I have added the connections param in pptpd.conf to allow the connections but I do not know how to set the remoteip ...
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2answers
1k views

Routing problems to certain domains with PPTPD VPN setup

We've been struggling with some kind of network/routing issue with a PPTPD based VPN where the clients can't access certain internet domains/ips through the VPN. As an example, the user can browse ...
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2answers
4k views

IPTables/VPN forwarding

Goals: 1) allow VPN users to access internet without any restrictions 2) allow server itself to access internet, but using specified ports only (mail, web, remote access) Server config: 1) VPN ...
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2answers
4k views

pptpd on Debian doesn't write any logs

I'm trying to set up PPTP server with Debian Squeeze. The problem is nothing is being written in the logs (neither in messages nor in debug nor in daemon.log) though debug and dump options are set. ...
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1answer
1k views

Can't reach hosts in same network as server via pptpd on ubuntu 10.4

I've installed pptpd on an ubuntu 10.4 box and configured it like this: localip: 192.168.1.11 (the pptpd server) remoteip: 192.168.1.150-199 I've also added a user and added the following line to ...
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0answers
603 views

Can't ping other machines at Linux VPN PPTP server's local lan from outside

Before anything else, hello guys, this is the first time I ask for something here so I hope someone can give me a hand, please look at the following network diagram: ...
2
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1answer
100 views

Mac OS X and Windows clients loses DNS from time to time using a PPTP Linux server

I have a PPTD server (pptpd) running on Debian and my clients are either Windows or Mac OS X machines. I also have an internal DNS hosted at the PPTP server since I want to resolve internal ...
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2answers
10k views

Debian server + PPTP VPN - connection not working

I set up a Seagate DockStar with Debian Squeeze as a litte server in my home network. I'd like to access it from outside my own network now, so I need a VPN connection. BTW, I don't have a router with ...
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3answers
3k views

change default PPTP TCP port

Is there a way to make pptpd listen for PPTP trafic on a TCP port other than the default 1723 port? I khow that PPTP uses more then just tcp/1723. It also uses GRE. it's not a problem. just how to ...
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1answer
380 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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1answer
110 views

Is it insecure to use the following iptable rule for NAT?

I want to setup a VPN server for personal use, so I follow the blog article [1], and it work like a charm. The only thing I am wondering is if the iptable's rule secure, e.g. iptables -t nat -A ...
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4answers
2k views

No External Network Access Through Ubuntu VPN

I have setup pptpd as my VPN server on Ubuntu Server 9.04, I am able to connect to the VPN from the client and can access the server's local network, but I am unable to connect to the external network ...
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1answer
150 views

Restrict VPN Clients to VPN Server

I've setup a VPN server using Debians pptpd. This all works, but I want to restrict incoming connections so they can only access ports on the VPN server and not get access to other machines on the VPN ...
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2answers
1k views

How to stop pptpd even when there are active vpn client connections?

After issued command to stop pptpd, the pptpd won't stop until all the VPN client has disconnected. The following code shows pptpd is still running after issuing the stop command. ...
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1answer
2k views

IPTABLES: routing VPN users through transparent Squid

I'm hoping someone can help me out - I've been tearing my hair out over this! I have pptpd and squid set up. I want give these users access to the internet, but would like to send http traffic ...
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2answers
476 views

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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1answer
539 views

Restricting nginx website connection to VPN Users on the same server

My main aim is the following: Install a VPN server on a server, and a website on that server should be accessible only to users that are using the VPN on that same server. First, the two server case ...
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0answers
4k 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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295 views

Networking between openvpn and pptp clients

Long uptime to everyone! OS FreeBSD 9.0-RELEASE, pptpd-1.3.4. Network: em0 1.2.3.4 - external interface and ip tun0 10.18.1.0/24 - network for openvpn clients tun1 10.18.2.0/24 - network for pptp ...
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630 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
220 views

Connect to server via VPN-tunnel to same server

Sorry, if title is unclear, here is the setup: There is machine A, running Linux. A is part of university network and has single network interface with real IP. But connections from outside of campus ...
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1answer
435 views

Bind Poptop (PPTPD) to a specific interface

I have a poptop pptpd running on a server with 16 public IP's I am getting clients to connect to (for example) eth1:8's IP (I also have pptpd set to listen on the address in /etc/pptpd.conf) the ...
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0answers
807 views

How to use Ubuntu PPTPD as Gateway?

I just set up Poptop on our Ubuntu 10.04 server so we could use it as a VPN. I can connect to the LAN through PPTP but I can't use it a gateway (I needed to uncheck the "use default gateway on remote ...
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1answer
233 views

v6tov4 in Linux?

I have a server which runs Debian system. I use pptpd for VPN services. But pptpd can only response to IPv4 traffic and ignore IPv6 traffic. Is it possible to establish VPN connection using IPv6?(That ...
0
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1answer
89 views

pptpd mostly works, but strange internet/dns behavior

I'm running Centos 6.4, and I got pptpd working, for the most part. I am connecting from a Windows 7 machine, and once connected I can access all the intranet sites as well as sites that are already ...
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4answers
550 views

ubuntu 9.04 pptp broken after a power failure

I have a small Ubuntu 9.04 router setup as a NAT box and a PPTP server. After a power failure everything except the PPTP server still works. A windows client gets to "registering your computer on the ...
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2answers
410 views

PPTPd: 'initial packet length 4930 outside (0 - 220)'

I got home today and was greeted by a pile of emails from logcheck, informing that pptpd was upset. Here is a snippet: Jun 26 20:02:37 lazarus pptpd[3060]: MGR: initial packet length 4930 outside ...
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1answer
90 views

What is the remote IP on PPTPD settings? ( digital ocean) [closed]

I'm trying to install a vpn ( PPTPD) server using digital ocean tutorial. Everything looks straightforward except that I don't know what the remoteip ip/range is. Is it something that I should look ...
0
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1answer
34 views

Is it possible to run pptpd with certificates and is it recommend?

To secure my internet experience, I want to set up a vpn on a on-demand way using amazon AWS EC2. My primary client is running with windows 7 professional. (Maybe further clients will be my android ...
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2answers
558 views

Remote IP for pptpd server

I'm trying to set up a VPN server with pptpd, and I'm having trouble determining what range of IP addresses I should pass to it's remoteip configuration option. I can connect just fine to the VPN, but ...
0
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1answer
175 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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1answer
95 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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1answer
926 views

PPTP linux server - Linux clients ok - Windows client can't connect to some web servers

I have one mysterious problem with our VPN office server. I have installed PPTP server on Debin 6 Squeeze and enabled forwardind, because I need to connect to some servers with our office IP address. ...
0
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2answers
765 views

Fedora 15: em1 recently dissapeared and hostapd no longer serves internet to wirelessly connected devices

I have a laptop running hostapd, phpd, and mysql. This laptop uses an Ethernet connection to connect to the internet and acts as a wireless access point for my workplace's wifi devices. After ...
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2answers
2k views

PPTPD Couldn't open the /dev/ppp device: Permission denied

I cannot connect to my pptpd server, because it fails to send LCP: Config-Requests to my client. I found the problem, it was located in syslog Jan 14 03:45:38 mightyowl3 pppd[22256]: Couldn't open ...
0
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1answer
247 views

pptpd server does not route internet traffic?

I have set up a pptpd server on my computer and clients can connect to it successfully. I have enabled ip_forwarding in /etc/sysctl.conf and added the following rule to my iptables to masquerade the ...
0
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1answer
609 views

pptp cannot connect

I have a pptp server on ubuntu behind a router. From inside the network I can connect to pptp server, but from the internet I can not. 1723, 1792 port are forwarded in router. Here is a full log: ...
0
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1answer
509 views

Debian firewall: Shorewall - VPN2VPN policy doesn't work

I have a problem with my shorewall policy. There are 4 zones configured in shorewall but the policy vpn2vpn:accept doesn't work. I want to establish connections between PPTP clients. They are dropped ...
0
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3answers
4k views

Ubuntu VPN Server (PPTPD) Configuration - Pass Traffic to Internet

I am trying to configure PPTPD on my Ubuntu box to pass all VPN traffic through to it's internet connection, so I essentially want it to work like a Proxy. I think the problem is that no default ...
0
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1answer
7 views

What can I do if the VPN can be connected but not loading any traffic?

I set up a VPN with pptpd on my Linux server. For many months it works fine. But suddenly it failed. The VPN can be successfully connected but no traffic can come in. Is there anything I can try to ...
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0answers
24 views

Poptop unable to authenticate against RSA Authentication Manager via RADIUS

Unfortunately I haven't been able to find an answer to this through Googling, searching Stack sites, etc. Any help provided would be appreciated. I'm setting up Poptop and it needs to authenticate ...
0
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1answer
64 views

how to run pptp over redsocks proxy

I have one (virtual) Linux box in Ubuntu, that has redsocks set up done. Inside the machine, I could confirm that the the redsocks did work (use wget to check the external IP). Now, I want other ...
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0answers
36 views

Configure ufw pptpd and dnsmasq on the same server

I've got a an ubuntu 14 server running both pptpd and dnsmasq. I'm having trouble configuring ufw to allow pptp clients to resolve their DNS queries using the local dnsmasq server. I've correctly ...
0
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1answer
179 views

Bridge PPTP VPN with local network

I have configured on my Ubuntu a VPN server using PPTPD. I can connect to it from outside of my LAN, I can use it's internet connection. But I cannot see my LAN clients (because the VPN and the LAN ...
0
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0answers
74 views

Can't access internet when connect to pptp vnc build on opensuse13.1

I have built a pptpd vnc server under opensuse13.1, everything looks fine when I running the pptp service. but there is problems when I connect from both android & winxp client: by winxp At ...
0
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1answer
585 views

How do I get Ubuntu to pick up proper DNS routes over PPTP?

So here is my scenario. I have setup an Ubuntu 14.04 PPTP server setup at a remote site and it is working just fine. I can connect clients remotely via Linux & Windows. I can also ssh and RDP to ...