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Iptables - Redirect outbound traffic on a port to inbound traffic on 127.0.0.1

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http://serverfault.com – I will be awarding a +100 bounty to the correct answer once it is available in 48 hours Is there a way to redirect traffic set to go out of the server to another IP, back to the server on localhost (preferably as if it was coming from the original destination)? I'd basically like to be able to set up my own software that listens on say, port 80, and receives traffic that was sent to say, 1.2.3.4. So as an example with some code. Here would be the server: my $server = IO::Socket::INET->new( LocalAddr => '127.0.0.1', LocalPort => '80', Listen => 128, ); And that w (HowTos)

xskl's picture
Submitted by xskl on 04/05/2012

Stories similar to Iptables - Redirect outbound traffic on a port to inbound traffic on 127.0.0.1

I have a server running UDP server on port 50000. This server receives updates from clients, and pings back the clients every 5 seconds to the socket they were connected from.

Now I want to redirect all the traffic to and from this UDP server via another server. Basically I want to setup a transparent proxy in front of this server.

I now played around with iptables (the whole day) to make my rules work, but there is one issue.. all traffic that I redirect goes through my server and back through my server. We are talking about high HIGH amounth of bandwidth.

I have a server with multiple domains. Both http (apache) traffic and http-alt (tomcat) traffic.

If/when I take the server down, I'd like to be able to redirect people to a temporary 'undergoing maintenance' page, regardless of their destination URL/port.

How can this be achieved?

When trying to setup a redirect and save the iptables file via iptables-restore, i get the following error:

iptables-restore v1.4.8: Line 31 seems to have a -t table option.

Error occurred at line: 31

Here's the full file, with the line im trying to use to redirect at #31

*filter

# Allows all loopback (lo0) traffic and drop all traffic to 127/8 that doesn't use lo0 -A INPUT -i lo -j ACCEPT -

I am using Stunnel, Varnish, and nginx with a nodejs app, and I'm having trouble redirecting non-https pages (http://manager.domain.com) to their respective https page (https://manager.domain.com). I just get stuck in a redirect loop because all the traffic passes through varnish first. The main reason for this set up is to use sockets with ssl.

Stunnel listens on port 443.

My friends have a Mine craft server with an ip to connect (206.217.128.131:25571). This is obviously not ideal as a true domain name would be more user friendly.

Although I share a VPS with a friend who has a domain name and we even have a site for our server.

I am looking to create a load balancing server. Essentially here is what I want to do,

I have a public ip address, lets say 1.1.1.1 I have a second public ip address, lets say 2.2.2.2

Here is what I want to happen. I have a website www.f.com point to 1.1.1.1 via an A record.

Ubuntu 12.04 Load balancer 24 weeks 5 days ago

I am looking to create a load balancing server. Essentially here is what I want to do:

I have a public IP address, lets say 1.1.1.1 I have a second public IP address, lets say 2.2.2.2

Here is what I want to happen. I have a website, www.f.com point to 1.1.1.1 via an A record.

Hello,

I'm looking for a solution to route my SSH traffic through a proxy. Here is my setup:

Laptop --> ssh traffic --> remote ssh server (owned by me) --> privoxy (socks5) --> TOR.

As you can see, my main goal is this. I want to ssh into my remote server, and then all the outbound webtraffic generated on the remote server must go via TOR.