Port ing (route forwarding) in Linux)

Port ing (route forwarding) in Linux)

In Linux, port ing (route forwarding) should first be done in the/etc/sysctl. conf configuration file. net. ipv4.ip _ forward = 1. The default value is 0.

This allows iptalbes FORWARD.

Vi/etc/sysconfig/iptables add * nat segment

* Nat

: Prerouting accept [0: 0]

: Postrouting accept [0: 0]

: Output accept [0: 0]

-A prerouting-d 2018.349.101-p tcp -- dport 16688-j DNAT -- to-destination 192.168.2.35: 16688

-A postrouting-d 192.168.2.35-p tcp -- dport 16688-j SNAT -- to 192.168.2.55

COMMIT

202.16349.101 is an Internet ip address, 192.168.2.35 is an intranet ip address, 16688 is the forwarding port, and 192.168.2.55 is the destination ip address.

Restart iptables

Service iptables restart

Test forwarding

Telnet 192.168.2.35 16688

This article permanently updates the link address: