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Questions tagged [tunneling]

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Router [ER-X] as WireGuard Client to hide Office IP on Debian Server. Cannot bind to WireGuard IP from the server

Dear ServerFault community I have a problem with my WireGuard Tunnel overall configuration. I have an OVH VPS with 4 public IPs (MY_PUBLIC) acting as a WireGuard server and forwarding all the traffic (...
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tunel ssh: set remote listen ip

I want set a ssh tunel and Forward de remote ip/port to local ip/port local has ip 192.168.1.20 remote has ip 12.0.3.213 so ssh -R 12.0.3.213:6666:localhost:6666 <my_remote_user>@<...
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SirTunnel (python script) vs already exist https server (node.js) is it possible

I found https://github.com/anderspitman/SirTunnel This is usage: How do you use it? If you have: A SirTunnel server instance listening on port 443 of example.com. A copy of the sirtunnel.py script ...
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2 answers
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FTP over SSH (not SFTP?) when files are on third server not SSH server

I have a machine A. From it, I can SSH to machine B. Machine B can FTP to machine C. I want to download files from C, onto A. I do not have access from A to C directly. Port 20 and 21 ...
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Access Apache NiFi running on remote VM via browser and PuTTY

I'm trying to access a Virtual Machine running in Google Cloud which has a Apache NiFi service running on port 8080 on the VM. I have managed to create an ssh key and upload the public SSH key to the ...
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Public domain name for server running on laptop

What is a good way to use a public domain name to access a server running on my laptop? Note: My laptop's IP is not static and could be anywhere, at my apartment, in a coffee shop, tethered to my cell ...
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StrongSwan Not Keeping Connection Alive

We have a virtual linux VPN using StrongSwan to integrate some REST API services. Our VPN works perfectly, however after some time it looses the tunnel connection and goes down. We need to manually ...
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Solved - Router as WireGuard client | External User IP is shown to be WireGuard tunnel's local IP on home server [EdgeRouter]

I have set up my EdgeRouter-X as a WireGuard client (using IPv6) so that my public IP is shown to be the WireGuard server's public IP. This is because I want to host an home server using OVH's IP and ...
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Ubuntu use ovpn on existing tun interface

Is it possible to configure OPENVPN on existing tun interface using .ovpn config file? I have interface tun1 sudo ip tuntap add mode tun dev tun1 and config file ./vpn.ovpn and i need to configure vpn ...
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Passthrough VPN Tunnel w/ iptables

My email VPS is getting to its limit but it's dedicated IP is well nurtured and I just cant part with it. I'm trying to setup a test environment where I establish a VPN server on the VPS just to ...
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OpenVPN client block SSH and remote access

When I connect openvpn client to IPvanish server via ubuntu 18.04, I am unable to keep alive SSH And remote desktop(xRDP) connection remotely. Please help me. Here is netplan config: network: ...
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Route TRaffic from tunnel interface to Internet DSLite

I am setting up DSLite AFTR in Ubuntu machine. I am able to setup the tunnel between Rpi(B4) and Ubuntu(AFTR). The tunnel is of type IPv4inIPv6. I am running Dibbler server on Ubuntu and dibbler ...
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does google cloud support ipsec encapsulated gre tunnels

I can't seem to get a pim set up on google cloud where multicast traffic is sent over a ipsec encapsulated gre tunnel. Does google cloud ec2 instances and network block this type of traffic?
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Allow access to webserver located in a LAN from remote server hosted at GoDaddy

I want to allow people to access a webserver located on acomputer in my LAN buy my ISP does not allow me to open any ports. I have a website hosted on a shared hosting that allows ssh access. Is there ...
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Tunnel IP address

I'm using Pantheon to host my website. The website is using some third-party service through API, and this service can allow only one IP address to access it. The issue is that Pantheon changing IP ...
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Shared layer 2 state in a P2P Tunnel between two Linux Machines

Assume two Linux Hosts, that are directly connected to each other cia ethernet and their ethernet interface is always up. I am wondering if there is a tunneling protocol implementation that would ...
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Socat TUN listener can't handle multiple connections?

I set up tun device server on 1.2.3.4 socat -v -v -v -v -d -d TCP-LISTEN:11443,reuseaddr,fork TUN:10.3.33.20/16,up I set up client 1: socat TCP:1.2.3.4:11443 TUN:10.3.33.21/16,up I can ping 10.3.33....
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IP Binding Issue in using GRE Tunnel

I have a issue with tunneling and am having a hard time finding a solution. I have two servers, A: Host-Server being a sever with a single IP, and B: Main-Server being the server handling all our ...
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Using a BlockOutbound default policy in Win10 to fully Tunnel all WAN traffic through the TUN/TAP interface

So I got a little "advanced firewall usage" question in Win10. I have a VPN running in a VPS with openvpn , running like a charm , and I wanted to filter all the networking of my endhost (in ...
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WireGuard Chain Tunnel

I'm trying to build a chain WireGuard Tunnel. Right now testing, but I'm stuck. I have two WireGuard servers, 1st one is in India 2nd one is in Singapore. Here is what I'm trying. Client < 10.26.26....
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Access heavily firewalled remote computer port with wstunnel

I have a remote server running Win10 from which I need to access one port (RDP) from my local laptop. Unfortunately, Remote Win 10 is heavily firewalled (zscaler). Only HTTP / HTTPS / WS is allowed on ...
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How to forward a port via an IPv6 tunnel?

I have a service on port 8080 of my local machine, which I have created an IPv6 tunnel via Hurricane Electric’s service for on https://www.tunnelbroker.net I can ping the tunnel. So that part works, ...
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Linux - IP tunnel

I have two machines on different subnet. Say one is 1.1.1.1/8 while the other is 2.2.2.2/8. The two are able to talk through a common router. The 2.2.2.2 machine has an internal interface on a third ...
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Routing part of OpenVPN traffic into an IPSec tunnel on the server

I am trying to configure OpenVPN Access Server to route certain traffic through an IPSec tunnel established on the OpenVPN server. These are the addressing details: OpenVPN client IP range: 10.0.1.0/...
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2 answers
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SSH Tunnel - Performant alternatives for exposing a local port to remote machines?

I have Server A running at home in a Carrier-Grade NAT environment. Due to this I cannot open a port directly in my router. I also have Server B on a cloud hosting provider, which has a static public ...
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Reliable transfer protocol designed for a known static bottleneck size and high packet loss?

AFAIK, most reliable transfer protocols like TCP tends to use some method (like packet loss) to detect the size of the bottleneck. In my use case, however, the bottleneck bandwidth is a known value of ...
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forwarding packets between two openvpn tunnel networks on the same host

I have two p2p tunnels to two different servers on a host, tun1 and tun2: (host is Ubuntu server 18.04) (Server 1: IP1) <--> (Host: IP0) <--> (Server 2: IP2) For tun1 to server 1 I have: ...
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Forwarding Traffic from TUN interface to XX

My setup is the following: I'm writing a program that creates a tun interface and writes raw (Layer 3) packets to that interface. For example a ICMP ping packet (to make things easy). Now i want to ...
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How to use public IPs from remote network in my local network

The image shows the current remote setup and proposed local network I have 2 networks at different locations. For your better understanding one network I named remote network and another is local ...
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Accessing local network from a different network using cloud server

I'm not sure if this title is correct, but I have an OpenVPN server on an AWS EC2 instance that I want to use to ssh into my local network machines when I'm on a different network. A simple method I'...
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How to force the server to set ppp0 and ppp1 for the specified VPN connections?

I have two different VPN connections on a server as below: The first connection from a mikrotik server (192.168.100.128 as the client) to the main server (192.168.100.99 as the host with ppp0). The ...
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preventing ipv6 packets from being generated when creating a gre tunnel

I have a veth device, each side of it is in a different network namespace on the same machine. I am creating a gretap tunnel over this veth. when setting the gretap device to up state I can see a lot ...
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Suppressing ICMP protocol 47 unreachable with userspace GRE implementation

For reasons that would require a lot of irrelevant context to explain, I'm handling GRE packets with a userspace process with a SOCK_RAW/IPPROTO_GRE socket. This is working fine, except that despite ...
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Linux: network inteface tunneling include states

I would like to implement network interfaces tunneling between two machines. I also need to synchronize the network interfaces states: Machine A: Machine B --------------------...
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AnyDesk TCP tunnelling port "closed" since Windows 10 2004

I connect to my company computer via AnyDesk. I have set up a TCP tunnel from local port 11111 to remote port 22, to have an SSH connection to the remote machine. This stopped working since I ...
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Tunnel Linux traffic to Windows

I have two servers. Windows and Linux. Let's say Linux has the IP 1.2.3.4 and Windows 5.6.7.8. I want all traffic to be forwarded to windows as a tunnel. If I connect with 1.2.3.4:329 I want to ...
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Best way to link two systems [closed]

I am trying to link two Ubuntu 20.04 servers together Server One is a cloud server with its own dedicated IP with DDoS protection and a hardware firewall. Server Two is a much higher performance ...
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Forwarding Home Game-Server through GRE Tunnel | Can't ping remote GRE IPs

I am having trouble routing my game-servers through GRE. I do not receive a ping from either side when pinging them. I can ping the local GRE interface; however, I cannot ping the remote GRE interface....
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How can I setup a dual SSH tunnel so that two machines A and B behind firewalls ssh into a central sever such that A can VNC into B?

I need to connect via VNC from my machine A to another machine belonging to my friend B. Both of us have no way to open incoming ports - ISPs do not allow tunneling unless you buy a static IP based ...
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How to tunnel private adress based on etc/host record?

I have machine A (MacOS), and Server B in private network (ubuntu). In etc/host on B I have something like: 192.168.63.123 abc.abc.com 192.168.63.123 abc2.abc2.com 192.168.63.123 abc3.abc3.com I ...
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1 vote
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Routing tun0 traffic through tun1 (double-hop VPN)

Goal: route all internet traffic from eth0 -> tun0 -> tun1 for double-hop VPN. Is the following routing table correct for that goal? $ ip route show: 0.0.0.0/1 via 10.8.1.1 dev tun1 default via 10....
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Netmask for point to point ip address?

In a point to point tunnel, I was able to have the same IP twice. It looks like a bug, I think that might be related to some internal representation of the netmask. It can be reproduced with the steps ...
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Install packages through a 2 ssh tunnels

I have the following scenario: Server_A : Host that needs to get packages installed Server_B : Host that it's used to connect to Server_A Server_C : Host that it's used to connect to Server_B ...
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Unable to change link-local address for tunnel with iproute2

I have a couple of HE sit tunnels on Ubuntu 18.04 box. Only first one works as expected and I suppose the reason is almost same link-local addresses (generated from same MAC). What I'm trying is to ...
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Tunneling between two servers [closed]

There are two servers in this network The first server benefits from censored internet The second server uses uncensored internet The client can only connect to the first server and connect to the ...
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Connecting to another server through squid

I have 2 servers A and B, I don't have access to B normally, but I can access B through server A. I want my http requests to be proxied through server B. If I set up squid on server B, I can't access ...
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ACK packet lost in GRE tunnel for IPv6 in IPv4

At home (79.1.1.156), my ISP doesn’t provide IPv6 so I’m connecting my server to an external server (95.1.1.126) that has IPv6 access via a GRE tunnel, with this simple setup: ip tunnel add gretun ...
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3 votes
2 answers
1k views

Linux GRE - ip tunnel vs ip link

Can someone please explain the difference between linux ip tunnel and ip link command when it comes to configuring tunnels (such as GRE, IPIP, or VXLAN)? I can see that I can configure a GRE tunnel, ...
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tun/tap works on incoming or outgoing packet?

When we create a tun virtual interface we use read and write to read and write packets from/into network stack. My question is when we use .read, we are actually reading outgoing packets (the packets ...
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what is difference between simple TUN and VPNs like PPTP and L2TP

In respect of VPNs and tunneling, as far as i know, TUN is a virtual interface works on network Layer 3 (IP packets), and is nothing more than a simple more likely UDP socket link in practice (I think)...
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