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Questions tagged [tunnel]

226 questions
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How to debug a SSH socks tunnel connection?

I followed this guide https://www.digitalocean.com/community/tutorials/how-to-route-web-traffic-securely-without-a-vpn-using-a-socks-tunnel on how to set up a VPS connection to Windows. And my tunnel connection is running on Windows fine, Putty…
user3108268
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How to make an tunnel between reverse proxy nginx and server?

I am preparing ipv6 of my webserver for ios app. Now I've my server build on a vps that not support ipv6. So I set up a reverse proxy nginx on another server that support ipv6. I want to make the reverse proxy listen on only ipv6, then forward to…
LF00
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VPN Tunnel and Subnet Conflict

I recently started at a company with no IT infrastructure and have been task with getting the network set up. I do not have a lot of networking experience and have been doing research in trying to connect our sites via VPN tunnel. We have 3 sites 2…
Freddy Roller
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OpenVPN config to publish internal services behind NAT

How can I publish 2 internal IP's behind a NAT firewall (router with dynamic firewall)? I have 2 external IP's, 99.52.156.5 and 46.113.5.88, and I would publish two separate internal services on port 443(behind my home network, NAT, dynamic IP)…
Manuel
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Rsync from A to C thru reverse tunnel on B

Been searching for awhile on this and haven't found a solution. Machine C has a persistent reverse tunnel to machine B. I.e machine B can connect back to machine C thru the reverse tunnel. I can rsync files from C to B and then retrieve them with…
turen
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Accessing Tunnelled Local Server via Cloud Server's Public IP

I have tunneled my local server to cloud server with VPN tunnel (Tinc). Both servers can talk each other on tun0 interfaces. My cloud server can be accessible through Internet with public IP address assigned to its eth0 interface. I want my local…
Kerem atam
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VPN no access to LAN

I'm having a problem which surfaced yesterday and is preventing VPN access to LAN. I connect to our workplace's LAN through PPTP VPN; Was working until 2 days ago. Server OS is Windows server 2012. 2 things that seems weird and probably…
joebegborg07
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Creating VTI tunnel interfaces on Ubuntu 14.04 LTS kernel 3.13.0-24-generic throws an error "Keys are not allowed with ipip and sit tunnels"

While creating a vti tunnel/interface on a ubuntu-14.04 LTS system with following config, I am seeing the error Keys are not allowed with ipip and sit tunnels. I have done a apt-get install iproute2* and…
NRajK
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How to use icmptx?

In Trusty (Ubuntu 14.04, both sides) I want to create an ICMP tunnel. I don't know how to set IP's. I searched and read some documents like this and this but I couldn't figure out what exactly I should do and in what server. Is real IP (internet…
hamidi
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Linux vpnc - How to define a specific tunX number in vpnc

I need to start multiple vpnc tunnels and define a different static route for each of individually after setup. To do so I created a script that will run after each connection (tunX) goes up. However if one or more tunnels goes down and I need to…
mjoao
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Remote SSH Tunnel external access

I've setup a remote ssh tunnel from my Raspberry Pi, which is behind a NAT, to my vServer using the follow command: ssh -ngNTfR 62.75.145.118:2209:localhost:22 root@unkn0wn3d.com 62.75.145.118 is the A record of unkn0wn3d.com I've set GatewayPorts…
Unkn0wn
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How to setup this IPSec VPN?

I have a main network (Net-A), there my work should be done there. On the other network, I have host server where it can reach to Net-A. On the host server, I'll create a couple of virtual machines, and what I want to archive is that, those virtual…
safeway
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Can't ping public endpoints when IPSec tunnel is up

I'm using openswan to link two machines via IPSec. The tunnel comes online fine and I have connectivity to each endpoint via the VPN. However, when the tunnel is up, I lose connectivity to the public endpoint IP addresses. For example, pinging site…
user98651
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how do I stop protocol 41 unreachable packets from being sent?

I'm using a Hurricane Electric tunnel on one of my VPSs, and it isn't working completely. I set up the tunnel with a script basically identical to this one: http://www.cybermilitia.net/2013/07/22/ipv6-tunnel-on-openvz/, with only modifications for…
jcomeau_ictx
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is it possible in this case to get two IPv6 networks to communicate over the IPv4 Internet?

I have a setup of a laptop connected to a cellular IPv4 network (3G usb dongle) and PC connected to another IPv4/IPv6 network. Both have been configured to run as IPv6 routers and each has its IPv6 network. The laptop connects to the Internet via…
user239167
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