How do I forward traffic from one IP to another in Linux?

How to Redirect Traffic to Another Computer (IP) in Linux

Table of Contents

# echo 1 >/proc/sys/net/ipv4/ip_forward.
# iptables -t nat -A PREROUTING -p tcp –dport 80 -j DNAT –to-destination 122.164.34.240.
# iptables -t nat -A POSTROUTING -p tcp -d 122.164.34.240 –dport 80 -j MASQUERADE.

What is a TCP redirect?

TCP/IP Redirector allows you to transparently redirect TCP/IP connections from one IP address and port to another. It may be used for mapping local ports or for redirecting traffic from one web site to another. Note: for redirecting websites, you need to replace the Host parameter in the request header.

How use Socat command in Linux?

socat: Linux / UNIX TCP Port Forwarder

socat Usage: TCP port forwarder. External socksifier.
Install socat Under Debian / Ubuntu Linux. Type the following command:
Source Code Installation. Visit the official website and grab the latest version:
Examples. To redirect all port 80 conenctions to ip 202.54.1.5, enter:

How do you forward traffic from eth0 to eth1?

1 Answer

Each computer has a default gateway set through the Linux box, or has a route to the other network via the Linux box.
The Linux box has forwarding enabled – uncomment net. ipv4.
Ensure the firewall allows forwarding ( iptables -vnL and check that the FORWARDING rule has no chains and is set to default ACCEPT ).

How do I forward traffic from one port to another?

This is called Port Forwarding.

Step 1: Login to your router via the default gateway address.
Step 2: Enter your router credentials into the login page.
Device Username Password.
Step 3: Next, locate the port forwarding settings.
Step 4: On the Port Forwarding page enter in a name for your device like, “Camera”.

What is TCP proxy?

A TCP proxy is a server that acts as an intermediary between a client and the destination server. Clients establish connections to the TCP proxy server, which then establishes a connection to the destination server. TCP proxy supports Window Scale (WS) option that are carried by SYN and SYN ACK packets.

How do I redirect an IP address?

How to Redirect a New IP to a Domain in cPanel

Enter the new IP address and a subnet mask.
Click the Change IP Address button, and then select the IP we just added from the drop-down menu.
Changing the site’s IP will make it unavailable at its old IP, and should expect it to appear offline for some time.

How do I check if port forwarding is enabled Linux?

Check open ports in Linux

Open a Linux terminal application.
Use ss command to display all open TCP and UDP ports in Linux.
Another option is to use the netstat command to list all ports in Linux.
Apart from ss / netstat one can use the lsof command to list open files and ports on Linux based system.

How do I move a route from one network to another?

Networks in the internet are connected to each other via routers. Routers carry traffic from one network/subnet to another. Routers maintain a routing table to decide how to route the IP packets. Each routing entry consists of the destination address, subnet mask and “route to” field.

How do I make a TCP load balancer?

Start the load balancer configuration: Under TCP load balancing, click Start configuration….Add the second forwarding rule:

Click Add frontend IP and port.
Enter a Name of my-tcp-lb-ipv6-forwarding-rule .
Under Protocol, select TCP.
Set IP version to IPv6 .
Under IP address, click Create IP address.
Set Port to 110 .

What is a TCP load balancer?

External TCP Proxy Load Balancing is a reverse proxy load balancer that distributes TCP traffic coming from the internet to virtual machine (VM) instances in your Google Cloud VPC network.

Is Netcat a TCP?

Netcat is a featured networking utility which reads and writes data across network connections, using the TCP/IP protocol. Designed to be a reliable “back-end” tool, Netcat can be used directly with other programs and scripts to send files from a client to a server and back.