Configure the proxy server (iptables) in ubuntu)

In ubuntu, configure the proxy server (iptables)-Linux Enterprise Application-Linux server application information. The following is a detailed description. #! /Bin/sh
Echo "1">/proc/sys/net/ipv4/ip_forward
/Sbin/modprobe ip_tables
/Sbin/modprobe ip_nat_ftp
EXTIF = ppp +
ANY = 0.0. 0.0/0
LAN = 192.168. 0.0/24

/Sbin/iptables-F INPUT
/Sbin/iptables-F OUTPUT
/Sbin/iptables-F FORWARD
/Sbin/iptables-F-t nat

/Sbin/iptables-P INPUT ACCEPT
/Sbin/iptables-P OUTPUT ACCEPT
/Sbin/iptables-P FORWARD ACCEPT

/Sbin/iptables-t nat-a postrouting-s $ LAN-o $ EXTIF-j MASQUERADE

Copy the shell to a file. Run the command to use the local machine as the proxy server. (You can also write it to/etc/init. d/rc. local and execute it each time it is started)

Note that the client also needs to add the server to the routing gateway and set its own DNS.

The command is as follows:
Set route: sudo route add gw 192.168.0.1

Modify DNS: sudo gedit/etc/resolv. conf, and add nameserver xxx. xxx. x. x as the DNS server.