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Questions tagged [tun]

81 questions
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Can the inet address assigned to P-t-P tun interface be used for a client inet address if the server runs out of all addresses within a subnet?

I have an OpenVPN server with an Inet address 10.8.0.1 serving the subnet 10.8.0.0/24. I have two clients connected to this server and the status log (/etc/openvpn/openvpn-status.log)reads as follows: OpenVPN CLIENT LIST Updated,Wed Aug 9 15:56:38…
Arjun Balakrishnan
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Cannot open TUN/TAP dev

Can someone please help me with this? I have a linux 2.6.9 server (I know it's outdated, but it has some special modules and so kernel cannot be updated/recompiled/etc), and I need to have a tun/tap interface on it for openvpn to work. Anyway I get…
Robert Johnson
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OpenVPN allows some users to jump to other hosts in the LAN

All users can connect to host where OpenVPN runs but some users can jump to other hosts in the LAN. For example, foo user can reach host 10.2.0.1/32 (where OpenVPN runs) and hosts at 10.0.0.0/24 but bar user can reach only the host 10.2.0.1/32. For…
facundobianco
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openvpn - Why do I have 2 tun interfaces on my server?

I have just configured watching this Hak5 video I found on Youtube. But what is bothering me is that why do I have two tun interfaces on my server ? Namely-: tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 …
ng.newbie
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Why is my host not receiving packets sent across tun0?

I have a tun0 interface set up which allows packets to be sent as such: HOST (aaaa::1) ----> tun0 ----> SLIP ----> Router (aaaa::200:0:0:1) The router receives the packets, and can send back a webpage (it has a small webserver on it), which I can…
mbadd
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How do I route traffic over the a tun0 device (IPSec VPN connection)?

I've set up an IPSec VPN tunnel between my laptop and work. The tunnel gets established, but routing does not. The relevant part of ifconfig is : eth0 Link encap:Ethernet HWaddr d4:be:d9:6f:a7:eb UP BROADCAST MULTICAST MTU:1500 …
sbrattla
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Endpoint to security gateway tunnel

I want to establish a connection between the client and the proxy server through a VPN tunnel in android device. I want to do this at layer 2 or 3 , where a packet can captured and encrypted. Please suggest any way to establish the connection. As…
user2044000
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OpenVPN - connect server as client to itself

I have tried to setup a small openvpn network but I ran into one big problem. I have a server and a machine at home. So I created a openvpn server on my machine and a configured the client on the other machine. Ping and anything else work fine. But…
user219962
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/dev/net/tun exists, but OpenVPN is refussing to find it

I'm currently configuring an OpenVPN client on an arm microprocessor running debian squeeze, however I'm running into problems. As the below shows, /dev/net/tun exists: debarm:~# whoami root debarm:~# cd /dev/net debarm:/dev/net# ls -lah total…
Liam Wiltshire
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OpenVPN tunnel not able to support secure connect request

In CentOS 7 host we have installed openvpn package and did create an tunnel using OpenVPN tunneling for eth9 and tap9. Everthing work fine for unsecure connection but when we try to connect to server on secure port i.e. 443 or so using openssl we…
Abhinav
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OpenVPN Tunnel between two LANs, traffic dropped on the way?

I'd like to create a OpenVPN Tunnel between to LANs 192.168.1.0/24 and 192.168.2.0/24. However somehow packets entering the tunnel on one side don't come out of the other side ... The following hosts are involved: R1=192.168.1.1 Router in LAN…
buergi
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openvpn connection has established but cant ping the server

I have a openvz vps and setup a openvpn server, and I successfully connect to the server in my ubuntu 14.10 client. server.conf: port 1199 proto udp dev tun ca ca.crt cert server.crt key server.key # This file should be kept secret dh…
hich9n
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TCP RST from telnet/ssh daemons when connecting from openvpn

I have LAN_1 and LAN_2 interconnected with an openvpn tunnel terminated ona pair of SOHO routers running busybox. One of the vpn purpose is to allow clients on both LAN_1 and LAN_2, to administer the two routers themselves, so telnet/ssh connection…
rokafeller
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Unbridged tap device

Good UTC evening! I've created a tap0 device on my host, it looks like: tap0: flags=4099 mtu 1500 inet 10.0.0.1 netmask 255.255.255.0 broadcast 10.0.0.255 ether 92:80:f9:b0:1e:fd txqueuelen 500 …
aikipooh
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bridge on openVPN client

I have some problem with setting up what i call a "remote entry point" (i'm sure ther is a real name for this) First things First : Here is my setup : ||=============================================================|| || …
Remy Grandin
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