Recieve and forward all packets to another port

Posted by question on Stack Overflow See other posts from Stack Overflow or by question
Published on 2010-12-21T15:44:31Z Indexed on 2010/12/21 15:54 UTC
Read the original article Hit count: 178

Filed under:

iptables

Debian 5, iptables

Server N1 Some video-streaming server without external IP.

Server N2 Debian server with ip 1.1.1.1.

Server N1 is configured to send videostream to 1.1.1.1:1111. How to forward all recieved packages from 1.1.1.1:1111 to another port on the same server, for example to 1.1.1.1:2222?

Something like that?

echo 1 > /proc/sys/net/ipv4/ip_forward

iptables -t nat -A PREROUTING -i eth1 -p tcp --dport 1111 -j REDIRECT --to-port 2222

Related posts about iptables

Sometimes this script fails to update the iptables

as seen on Server Fault - Search for 'Server Fault'
It does not happen often, but sometimes after running the below script, checking the iptables with service iptables status shows that they weren't updated and the script doesn't output any error. The iptables is structured as look-up tree (long repeated sections snipped): #!/bin/sh iptables -t… >>> More
My current iptable configuration doesn't work [on hold]

as seen on Server Fault - Search for 'Server Fault'
sudo chkconfig iptables off /etc/init.d/iptables on ### Clear/flush iptables sudo iptables -F sudo iptables -P INPUT ACCEPT sudo iptables -P OUTPUT ACCEPT sudo iptables -P FORWARD ACCEPT ### Allow SSH iptables -A INPUT -i eth0 -p tcp --dport 22 -m state --state NEW,ESTABLISHED -j ACCEPT iptables… >>> More
L2TP iptables port forward

as seen on Server Fault - Search for 'Server Fault'
Hi all, I'm setting up port forwarding for an L2TP VPN connection to the local Windows 2003 VPN server. The router is a simpel Debian machine with iptables. The VPN server works perfect. But I cannot log in from the WAN. I'm missing something. The VPN server is using a pre-shared key (L2TP) and… >>> More
iptables -P FORWARD DROP makes port forwarding slow

as seen on Server Fault - Search for 'Server Fault'
I have three computers, linked like this: box1 (ubuntu) box2 router & gateway (debian) box3 (opensuse) [10.0.1.1] ---- [10.0.1.18,10.0.2.18,10.0.3.18] ---- [10.0.3.15] | box4, www [10.0.2.1] Among other… >>> More
IPtables AWS EC2 NAT/Reverse NAT - For Reverse Proxy style setup but with IPtables

as seen on Server Fault - Search for 'Server Fault'
I was thinking initially needing to do a reverse proxy or something so I could get some SSL/TLS traffic look like it is being terminated at a server and IP address in the AWS cloud, and then that traffic is forwarded onto our actual web servers that aren't in the cloud... I've not done much iptables… >>> More

Developer IT

Recieve and forward all packets to another port - Developer IT

Recieve and forward all packets to another port

iptables

Related posts about iptables

Sometimes this script fails to update the iptables

My current iptable configuration doesn't work [on hold]

L2TP iptables port forward

iptables -P FORWARD DROP makes port forwarding slow

IPtables AWS EC2 NAT/Reverse NAT - For Reverse Proxy style setup but with IPtables

Categories cloud