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2643de4 Jul 4, 2016
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ss-nat(1)

NAME

ss-nat - helper script to setup NAT rules for transparent proxy

SYNOPSIS

ss-nat [-ouUfh] [-s <server_ip>] [-S <server_ip>] [-l <local_port>] [-L <local_port>] [-i <ip_list_file>] [-a <lan_ips>] [-b <wan_ips>] [-w <wan_ips>] [-e <extra_options>]

DESCRIPTION

Shadowsocks-libev is a lightweight and secure socks5 proxy. It is a port of the original shadowsocks created by clowwindy. Shadowsocks-libev is written in pure C and takes advantage of libev to achieve both high performance and low resource consumption.

ss-nat(1) sets up NAT rules for ss-redir(1) to provide traffic redirection. It requires netfilter’s NAT module and iptables(8). For more information, check out shadowsocks-libev(8) and the following EXAMPLE section.

OPTIONS

-s <server_ip>

IP address of shadowsocks remote server

-l <local_port>

Port number of shadowsocks local server

-S <server_ip>

IP address of shadowsocks remote UDP server

-L <local_port>

Port number of shadowsocks local UDP server

-i <ip_list_file>

a file whose content is bypassed ip list

-a <lan_ips>

LAN IP of access control, need a prefix to define access control mode

-b <wan_ips>

WAN IP of will be bypassed

-w <wan_ips>

WAN IP of will be forwarded

-e <extra_options>

Extra options for iptables

-o

Apply the rules to the OUTPUT chain

-u

Enable udprelay mode, TPROXY is required

-U

Enable udprelay mode, using different IP and ports for TCP and UDP

-f

Flush the rules

-h

Show this help message and exit

EXAMPLE

ss-nat requires iptables(8). Here is an example:

# Enable NAT rules for shadowsocks,
# with both TCP and UDP redirection enabled,
# and applied for both PREROUTING and OUTPUT chains
root@Wrt:~# ss-nat -s 192.168.1.100 -l 1080 -u -o

# Disable and flush all NAT rules for shadowsocks
root@Wrt:~# ss-nat -f

SEE ALSO

ss-local(1), ss-server(1), ss-tunnel(1), ss-manager(1), shadowsocks-libev(8), iptables(8), /etc/shadowsocks-libev/config.json