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Questions tagged [tunnel]

226 questions
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How to tunnel the serial port from a remote machine?

I'm trying to access a remote serial console (a tty port on a remote machine) as if it's on a local machine. This is necessary for a serial-port only application to work on my machine. The remote tty is not directly accessible. It is behind an…
crististm
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Why is 6to4's precedence behave differently

I tried to use HE's TunnelBroker service and the IANA's 192.88.99.1 service, both setup with the following script: #!/bin/sh modprobe # replace {remote_ip} with HE endpoint or 192.88.99.1 ip tunnel add 6to4 mode sit remote {remote_ip} local…
hlx98007
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How to use IPv6 tunnel to allow a dynamic IP in (Windows) firewall

I am frequently changing locations and my client has to update their firewall rules to allow me access to various servers when my IP changes. I'm looking for a better solution. A couple of things that I'm investigating are: using a VPN using a…
Andrew Bellenie
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OpenVPN and pfsense port configuration

I want to configure OpenVpn in pfsense to connect in a private network inside a virtual server, I follow some instructions, and read a lot, and I have the same problem, that's what I did: generate CA certificate generate Server certificate create…
Julio
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User-specific SFTP Tunnels

Basically, I have a couple differant Centos7 LAMP stacks running on differant virtual machines (on xenserver) & openSSH. I also have a couple intermediate proxy authentication servers running (one for HTTP, one for SSH, one for SFTP), for security…
myf4ult
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Are tunneling protocols like GTP a bottleneck limiting the throughput?

When tunneling protocols such as IPSec(in tunnel mode) or GTP are in use, they put multiple IP flows into one flow. Since there is only one flow, how do we scale up the throughput? Assigning more processor cores will not help since packets from one…
Satheesh Paul Antonysamy
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Linux foo-over-udp tunnel creation issues

I want to create fou(foo-over-udp) tunnel on linux 4.4.10 using iproute2 4.5.0 and while trying to create a tunnel i get the following error: sudo ip link add dev tun0 type ipip remote 172.19.0.9 local 172.19.0.8 encap fou encap-sport auto…
offlinehacker
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Route packets from Server A to B in Windows,B acts as a router

I have two (Windows 2008 R2) servers, let's call them: A and B. Server A is running a software server (in this example Apache HTTP). Without touching or changing anything in Apache's configuration, I need all packets from B to be routed to server A…
bagtrois
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"tunnel mode ipsec ipv4" seems to be missing from my CISCO router

I'm trying to set up a LAN-to-LAN IPsec tunnel and at one endpoint I have an old CISCO 871W running IOS 12.3(8)YI2. The command "tunnel mode ipsec ipv4" doesn't work: router#configure terminal Enter configuration commands, one per line. End with…
Silvian Cretu
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How to close an existing SSH tunnel?

In Windows, I create a scheduled task on Windows startup: C:\cygwin64\bin\ssh.exe -R 2222:127.0.0.1:3389 user@PublicHost to expose my rdp service on a public-ip server, and I can connect rdp successfuly, but I cannot find ssh.exe in task manager,…
Kingzone Wong
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Tunnel / Forward connections on server 1 to server 2

I have now spent some time researching, but I haven't found a working solution to the following problem: I want to tunnel any requests on server 1, port x to server 2, port x. The port stays the same, I just want to tunnel any data being sent to…
rocket_doge_
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Ethernet over GRE bridging - Proxmox

I'm trying to install two proxmox on Online.net server's, and I just realized that their RPN feature doesn't work at all like the OVH vRacks. Since I need the different VM's on both hypervisors to be able to talk, I want to set up a tunnel (their…
Ulrar
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Build IPv6 over IPv4 tunnel between server and home network

On one side I have an Ubuntu server in a data center that has IPv6 connectivity. The eth0 interface has a public IPv4 and also a public IPv6 /48. From that server I can ping IPv6 addresses OK. On the other side I have a home network on an IPv4 only…
Bastian
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Routing IPv6-traffic from client via OpenVPN-server

For playing and learning purpose i set up an OpenVPN-server. Im currently attached to a network without IPv6. Because of that, I would like to route all IPv6-traffic via the VPN. With IPv4 and iptables-Masquerading this already works perfectly…
M. Schmidt
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Switch to Switch Communication with Static Routing

Before I ask any questions, here's a bit of an overview: Simple example of my network topology What I have in the diagram is two networks segregated by a point-to-point LOS system (the "towers") and two network encryption/decryption devices on…
jmcdee
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