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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0answers
28 views
How to log VPN traffic? [closed]
I have the following services running:
root 780 1 0 May18 ? 00:00:00 /usr/lib/ipsec/starter
root 782 780 0 May18 ? 00:00:00 /usr/lib/ipsec/pluto --nofork --uniqueids ...
4
votes
2answers
837 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 ...
0
votes
1answer
50 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 ...
0
votes
0answers
39 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
...
1
vote
1answer
82 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 ...
1
vote
1answer
48 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 ...
1
vote
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 ...
0
votes
1answer
46 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.
0
votes
1answer
58 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 ...
0
votes
1answer
47 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 ...
0
votes
0answers
102 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 ...
2
votes
2answers
256 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
vote
1answer
348 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 ...
0
votes
4answers
523 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 ...
0
votes
1answer
114 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 ...
1
vote
0answers
248 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:
...
-4
votes
2answers
386 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
votes
0answers
156 views
pptpd + freeradius [closed]
Can anyone please share working configs for freeradius + pptpd? Radius server is already configured, and works with mysql backend + strongSwan ipsec (dirrect connection). But, i try several pptpd ...
0
votes
2answers
490 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 ...
0
votes
0answers
135 views
PPTP client can't access remote office's shares
I've setup PPTP server on our office's gentoo router. I can authenticate with my Win7 built in client from home. I get office's internal address and everything looks fine at first.
We also have two ...
1
vote
0answers
2k 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 ...
0
votes
0answers
102 views
incomming connections (port forwarding) on pptp VPN
Situation is this: Client C connects to pptpd VPN server V. C is listening on port 80 (webserver). How should pptpd on V be configured so connecting to V:80 would actually connect to C:80? Server is ...
-1
votes
1answer
1k 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
votes
0answers
42 views
poptop pptpd: how to make clients see each other?
How do I make all pptpd clients see each other using pptpd poptop server? Do I need to set routing somehow?
0
votes
0answers
167 views
PPTP VPN with CSF Browsing Issues
I'm having problems getting CSF configured to correctly forward traffic (my
knowledge is limited). When disabled, things will work, with it enabled I can
connect but can't resolve any websites. I have ...
0
votes
3answers
3k 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
vote
0answers
197 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 ...
0
votes
1answer
480 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. ...
1
vote
1answer
114 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 ...
1
vote
0answers
330 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 ...
0
votes
0answers
575 views
Ubuntu 12.04 PPTP server denying outside connections
I have an Ubuntu 12.04 system running the PPTPD VPN server. I can connect to the VPN fine inside my network, but outside of my network, I'm entirely unable to connect (from an OS X machine), I get the ...
1
vote
0answers
758 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
729 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 ...
0
votes
2answers
993 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
votes
1answer
282 views
One way traffic PPTPD Server / No Internet Access
I just set up a pptp server on Debian Linux yesterday by following this guide: http://poptop.sourceforge.net/dox/debian-howto.phtml When I tried to connect to the server using both XP and iOS, the ...
0
votes
1answer
380 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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votes
1answer
198 views
connecting to a pptpd server using openvpn client
I have a pptpd server on debian.
Is it possible to use openvpn client instead of pptp client to connecting to a pptpd server?
0
votes
2answers
1k 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 ...
2
votes
2answers
1k 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. ...
0
votes
0answers
196 views
why should i set mss in iptables when using pptp?
I installed on pptp in my server.
when i set mss is 1356， the packets will be lost 20% - 30%
/sbin/iptables -I FORWARD -p tcp --syn -i ppp+ -j TCPMSS --set-mss 1356
when i set mss is 1186， the ...
0
votes
1answer
183 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 ...
1
vote
1answer
194 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 ...
0
votes
1answer
380 views
PPTPD nic configuration and default gateway
I have a Ubuntu 10.04 server with PPTPD server. It has one nic with eth0 and eth0:0. eth0:0 has an UK IP and eth0 has a Franch IP. I have setup eth0:0 as default gateway because I want to show that ...
2
votes
1answer
93 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 ...
2
votes
2answers
516 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 ...
0
votes
1answer
173 views
Allowing PPTP clients to access remote server's WAN connection
Ok, I'm no VPN expert, but I'm experimenting with PPTPD on a little Debian 5 server.
When I log in to the server with a client, I can access the LAN resources, but I cannot figure out how to get the ...
0
votes
1answer
117 views
Setup pptpd and tunnel through it
I want to setup pptpd on my linux server and tunnel through it like if I were tunneling through ssh. Is it possible to setup the vpn connection to be a local proxy that way I can choose what programs ...
0
votes
1answer
539 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
votes
1answer
396 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 ...
1
vote
2answers
6k 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 ...
