Server Fault Stack Exchange
Server Fault Stack Exchange

Questions tagged [tunnel]

210 questions
40
votes
1 answer

ssh tunnel - bind: Cannot assign requested address

Trying to create a socks (-D) ssh tunnel - Linux box to Linux box (both centos): sshd running on remote side ok. From local machine we do / see this: ssh -D 1080 user@8.8.8.8. user@8.8.8.8's password: bind: Cannot assign requested address (where…
JosephK
  • 603
  • 1
  • 6
  • 8
16
votes
4 answers

Copy data through SSH tunnel over multiple hops

We have two main environments in question: Development and QA Each environment has two servers: Jump Box Application server In order to connect to the application server, you must connect to the jump box first, and then SSH to the Application…
Barry Chapman
  • 400
  • 1
  • 4
  • 15
11
votes
3 answers

Helo command rejected: Host not found - Setup postfix to accept sending mails from my home server through my public server

I would like to receive system emails from my home server. So I'm trying to configure postfix to do that through my public server. My public server has a fixed IP, while my home server is in a private network with a messed up hostname due to my…
The Quantum Physicist
  • 656
  • 2
  • 11
  • 25
9
votes
4 answers

SSH tunnel doesn't work

I am trying to use my server as a "proxy" with ssh. However, setting up tunneling with ssh -D localhost:8000 user@myserver does not work. I tested this on various machines with ssh and putty - It connects just fine, but when I set my browser…
s1ck
  • 145
  • 1
  • 2
  • 8
8
votes
2 answers

SSH tunnel (port forwarding) slow down a lot my mysql queries

I'm currently testing some configurations with vagrant (virtual box) to connect 2 servers (VM currently) together through an SSH tunnel. The goal being to securely connect my web app to the database. The issue is that when I query the database…
Nicolas BADIA
  • 356
  • 1
  • 6
  • 15
8
votes
2 answers

Tunneling a public IP to a remote machine

I have a Linux server A with a block of 5 public IP addresses, 8.8.8.122/29. Currently, 8.8.8.122 is assigned to eth0, and 8.8.8.123 is assigned to eth0:1. I have another Linux machine B in a remote location, behind NAT. I would like to set up an…
Jim Paris
  • 276
  • 2
  • 3
  • 8
6
votes
0 answers

Run openvpn inside docker and use as gateway for internet for other networked devices

I am trying to run tunnel all my network traffic on my LAN via an OpenVPN client running inside a docker container. My router and default gateway is running on 10.10.10.1 I have OpenVPN running on in a docker container with its own IP and all ports…
mrwooster
  • 233
  • 3
  • 7
6
votes
1 answer

Connecting to MYSQL over SSH tunnel

I can ssh onto the remote server and login without a problem. I'm trying to connect to a remote mysql db over a ssh tunnel and running into issues. I've created the tunnel successfully (verified by telnet). When I try to login with the…
Scott W
  • 165
  • 1
  • 1
  • 4
5
votes
3 answers

Replace DNS on Openvpn client without redirect-gateway

I am trying to push DNS to the client with OpenVPN server with config: push "dhcp-option DNS 192.168.x.x" It is working well, but what I really need is that during the VPN connection I do not want to use my primary resolvers, clients should use…
Gabor Vincze
  • 554
  • 1
  • 4
  • 11
5
votes
4 answers

How do I know if an openVPN tunnel is established?

How do you know if a site to site VPN tunnel is established in OpenVPN? Apart from pinging the other side, is there a command or something that shows the status of the tunnel?
Lock
  • 1,557
  • 6
  • 25
  • 33
5
votes
1 answer

selective routing through a VPN tunnel

The problem: after establishing an IPsec VPN tunnel all traffic is routed to the remote endpoint, while I only need to route the packets destined to that internal network and still be able to access the internet on my local machine. Currently, when…
BBK
  • 51
  • 2
5
votes
1 answer

Unsupported address method 'v4tunnel'

I'm trying to create a tunnel to HE.net to get an IPv6 address on my (cloud) server. When I created the tunnel and put this in /etc/network/interfaces: auto he-ipv6 iface he-ipv6 inet6 v4tunnel address netmask 64 …
KumaTea
  • 153
  • 4
4
votes
3 answers

How can I route traffic over IPSec tunnel?

I have two sites: MAIN (local subnet 192.168.0.0/24, external IP: M.M.M.M) and CLIENT (10.0.0.0/24, external IP: C.C.C.C). I created an IPSec tunnel between the sites and both sites can ping computers in both subnets. So far so good. # ipsec…
Michal B.
  • 97
  • 1
  • 10
4
votes
1 answer

How to forward traffic from tunnel interface to eth0

Network topology: Internet | | (eth0) IP: 202.xxx.xxx.xxx/255.255.255.0 A: Remote_Server(Debian) (tun0) IP: 10.10.1.1/255.255.255.0 | | (utun0) IP: 10.10.1.2/255.255.255.0 B: iOS_Device ( iOS 9 ) Device A: a TCP…
David W.
  • 51
  • 1
  • 5
4
votes
2 answers

Cannot run OpenVPN on port 53 (DNS Stops Working)

So I'm trying to get OpenVPN to work on port 53 - sadly this isn't working. I used IP tables to map port 53 to port 1194 (standard OpenVPN port) Here's what I run to do this: iptables -t nat -A PREROUTING -p udp --dport 53 -j REDIRECT --to-port…
Matthew 'mandatory' Bryant
  • 187
  • 2
  • 7
1
2 3
…
13 14