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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CentOS 6.5 PPTPD, mac cannot connect

OS: centos 6.5 32bit OpenVZ 512MB + 512MB vSwap *nat :PREROUTING ACCEPT [2560:174872] :POSTROUTING ACCEPT [0:0] :OUTPUT ACCEPT [443:25824] -A POSTROUTING -o eth0 -j MASQUERADE -A POSTROUTING -j SNAT ...
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2answers
980 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
27 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 ...
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1answer
30 views

PPTP and windows 7 809 error [closed]

I want to connect from home to my router(linux mashine) at work. i have installed pptpd. i have added following fw rules: iptables -I INPUT -p tcp --dport -j ACCEPT iptables -I INPUT -p gre -j ...
4
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2answers
667 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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0answers
15 views

Block certain logins from accessing the internet

I'm configuring a VPN server using poptop and ufw as a firewall. At the moment everybody who connects to the vpn can access the internet through it. I want to disable this based on the login. I could ...
4
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3answers
1k views

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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1answer
34 views

Allow PPTPD VPN clients to communicate with one another

I have an Ubuntu server on the net, I setup PPTPD on said server because I was experiencing a problem I VPN might solve. At my home address I have my Desktop, and I would like to access its resources ...
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1answer
22 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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3answers
2k 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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101 views

PPTPD server on ubuntu 12.04.1 LTS not giving default gateway or forwarding windows client's packets

I recently bought a VPS, and wanted to set up a VPN with IP forwarding on it, both for resource sharing, and to DDoS protect a company’s windows VPS. I am not very experienced with networking on ...
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1answer
21 views

Create a pptp tunnel through a exisiting domain [closed]

I want to create a tunnel (preferably pptp) via a website that I created I am renting a domain from an ISP with a linux os, is it possible to create it?
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132 views

Window CLient User Connect PPTP VPN FreeRadius verify username from MySQL not chap-secrets file

FreeRadius are working proper Sending Access-Request of id 223 to 110.4.43.172 port 1812 User-Name = "test" User-Password = "mypassword" NAS-IP-Address = 127.0.0.1 ...
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1answer
65 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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1answer
76 views

VPN client to client port forwarding

I have an EC2 Amazon instance running a vpn server with 192.168.240.1-9 ip range. I can connect my Macbook to this VPN (using system pref.) and a Raspberry Pi, using this command line: sudo ...
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1answer
65 views

PPTPD not work when connecting from Internet

I have VPN server on Debian stable. People in LAN (gray network) use this server for access to internet (WAN). But I also want to use this VPN server as something like "proxy" (connect from internet, ...
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0answers
68 views

PPtPd server gives error in ppp when client attempts to connect

I'm trying to setup a VPN server on Mint Debian edition. I followed the instructions here, where I changed the interface to be wlan0 and the ip address for the server and the range. The pptpd seems ...
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2answers
240 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 ...
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1answer
132 views

Opening ports for VPN clients

I am trying to open specific ports for users so that they can use programs such as RDP. I have searched all over the internet, and have yet to find an answer to this question. I have tried every ...
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0answers
49 views

PPTP custom route connected clients

I got this PPTP box with many users. My box is configured to have remoteip 10.8.0.2-254 for my users. Each time a new client connects it gets 10.8.0.2 which is not good for me. I need a way of giving ...
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1answer
329 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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131 views

vpn set up but client cannot connect to DNS server

I have three machines in the local network: A.Android phone B.PC C.pptpd running to Ubuntu in VirtualBox in the same PC. (with bridged networking) There is router which can see all these 3. I use ...
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1answer
138 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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83 views

PPTPD on VPS with one ip?

Ok, i've been trying for quite some time to get PPTPD working on my VPS and it's not working. Jun 16 21:08:34 cust-5488-520 pptpd[962]: CTRL: Client 83.127.117.40 control connection started Jun 16 ...
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1answer
227 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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1answer
142 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
294 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
105 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
362 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
164 views

pptpd: log of unsuccessful authentication

I am using pptpd on Debian 6. I know that last shows the list of connections as well as the source IP. I am looking for the log of unsuccessful authentication, or any form of alert/ban for a source ...
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1answer
74 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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0answers
147 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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2answers
887 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 ...
1
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1answer
409 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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4answers
544 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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1answer
185 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 ...
2
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0answers
487 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: ...
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2answers
832 views

Manually add route to VPN

Hello server enthusiasts, I have a VPN (pptpd running on Ubuntu 10.04) that I am trying to connect to with a client (Win7). I can successfully connect to the VPN. Once connected to the VPN, I can ...
0
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2answers
698 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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0answers
3k 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
2k views

problems connecting to VPN server on Raspberry Pi (Debian) [closed]

I have installed pptpd on my Raspberry Pi box (it's Debian-based for those who don't know), it's running but not working properly - I can't connect. here's interesting log - me trying to connect: ...
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 ...
1
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0answers
257 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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1answer
738 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. ...
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1answer
133 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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0answers
508 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 ...
1
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0answers
796 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 ...
3
votes
1answer
968 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 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 ...