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Questions tagged [tunneling]

384 questions
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Rp_filter and linux tunneling

Can someone please explain with an example why reverse path filtering need to be disabled while using IPIP/GRE tunneling? echo 0 > /proc/sys/net/ipv4/conf/all/rp_filter
Bruce
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How to make a tun interface with ifconfig in OSX?

If I try to do this I get the following: bash-3.2# ifconfig tun0 10.140.1.40 ifconfig: ioctl (SIOCAIFADDR): Destination address required It sounds like this doesn't happen in Linux (probably this is a BSD thing). The problem is I need to have a…
Doug
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Will Tunneling help in this scenario?

I have a computer running 24 hours at a site protecteed by firewall, this computer call it 'A' can connect to internet but unable to host a site since the port is blocked. I have an idea to purchase a VPS and host a website there call it 'B',…
John Kenedy
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OpenVPN - Client connected to server, but not tunneling

For context, I am migrating my VPN server. I duplicated the old set up almost exactly, and now clients connected to the new VPN server cannot tunnel properly (but they connect just fine). While tunneled, this is the routing table of my…
Bill
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Am I obliged to use ipv6 tunnel services if I want to be able to use it?

I was looking for configuring Slackware to use ipv6 but all instruction I found speak about using an ipv6 tunnel that encapsulate ipv6 request into ipv4 packet and send them to an external router that extracts ipv6 request and sends a reply (or, at…
Zagorax
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Multiple authoritative DNS server on same IPv4 address

I'd like to maintain a DNS tunnel on my self-hosted server at example.com. I also have a DNS server on it, which serves everything for example.com. I'm currently using dns2tcp for DNS tunneling, on the domain tunnel.example.com. NSD3 is used for…
Adrien Clerc
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Using OpenLDAP's meta backend to map incoming user to someone else

I am attempting to set up an LDAP "tunnel" to work around an application that requires a configuration slightly different to my environment. I need to be able to bind as USER1 to an LDAP server & retrieve data that the user does not have access to,…
Mark McDonald
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Keeping an SSH Tunnel open, and running a remote command

A computer behind a firewall (at a remote location) connects to my server to open a tunnel... the intention is that from the server I can connect to the computer over SSH. The computer makes the connection with: while true; do PORT=$(((RANDOM %=…
Craig Francis
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How Tunneling can be configured or set up in this scenario

I have a scenario like there are two servers 1.On the first server where apache and tomcat are running on different ports.For eg ip would be 172.168.2.19 2.There is a second server where jboss and kvsms are running.for eg ip w ould be 172.168.2.20…
developer
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using a gre tunnel as default route

I have two private networks (A, B) that connects via another company's private network (C). Network A has internet access. I want to make a tunnel between B and A that goes through C. Then network B will use A as default route for internet…
Sirber
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Obtaining and routing small IPv4 space?

I had an idea for designing a network setup in order to acquire high availability connections to my (small) network, but I seem to be running into a few problems trying to find out the particulars. The Quest I want to be able to have, in a location…
Michael Trausch
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Is it possible to use RRAS to create a tunnel over same subnet

I would like to setup some form of secure tunnel between servers on the same lan. We are currently using rackspace for cloud hosting, and would like to secure all communications over the 'private' lan interface via tunnels. I can find numerous…
nakchak
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running a command after the ssh has opened the tunnel

I want to run some process that requires an opened ssh tunnel. How do you run some command AFTER the ssh tunnel is successfully opened? Timers are not good enough as network speed and remote machine load might heavily affect the time needed to open…
xvga
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How to redirect outgoing network connections?

I was wondering how would I redirect outgoing connections from all applications to a certain proxy or something like that without having to hook winsock functions on windows. I noticed Proxifier is able to do that without installing any drivers of…
Gabrola
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Debugging flaky SSH tunnel

We have a dedicated SSH tunnel server, which supports a few dozen remotely located hosts. The hosts each create a reverse tunnel into the server with assigned port numbers, using autossh to keep the connections persistent. This gives us access to…
Mike Blackwell
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