shadowsocks-libev/doc/ss-server.asciidoc

ss-server(1)
============

NAME
----
ss-server - shadowsocks server, C implementation

SYNOPSIS
--------
// Generated by scripts/gen_cli_docs.py from src/server.c; do not edit this section.

*ss-server* [-f <pid_file>] [-s <server_host>] [-p <server_port>] [-l
 <local_port>] [-k <password>] [-t <timeout>] [-m <encrypt_method>] [-b
 <local_address>] [-c <config_file>] [-i <interface>] [-d <addr>] [-a
 <user_name>] [-n <number>] [-h] [-u] [-U] [-v] [-6] [-A] [--fast-open]
 [--reuse-port] [--tcp-incoming-sndbuf <size>] [--tcp-incoming-rcvbuf <size>]
 [--tcp-outgoing-sndbuf <size>] [--tcp-outgoing-rcvbuf <size>] [--no-delay]
 [--acl <acl_config>] [--manager-address <address>] [--mtu <MTU>] [--help]
 [--plugin <plugin_name>] [--plugin-opts <plugin_options>] [--password
 <password>] [--key <key_in_base64>] [--mptcp] [--nftables-sets <sets>]

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

*shadowsocks-c* consists of five components.
`ss-server`(1) runs on a remote server to provide secured tunnel service.
For more information, check out `shadowsocks-libev`(8).

OPTIONS
-------
// Generated by scripts/gen_cli_docs.py from src/server.c; do not edit this section.

This section lists options across supported builds. Platform and feature
restrictions are noted below; not every option is effective on every platform.

-f <pid_file>::
Start shadowsocks as a daemon with specific pid file.

-s <server_host>::
Set a server listening hostname or IP address. May be repeated.

-p <server_port>::
Set the server listening port.

-l <local_port>::
Accepted for compatibility but ignored by this program; it does not configure a local listener.

-k <password>::
Set the password. The server and the client should use the same password.

-t <timeout>::
Set the socket timeout in seconds. The default value is 60.

-m <encrypt_method>::
Set the cipher. The default is 'chacha20-ietf-poly1305'.
+
AEAD cipher names from the source (availability depends on the build):
aes-128-gcm, aes-192-gcm, aes-256-gcm, 2022-blake3-aes-128-gcm, 2022-blake3-aes-256-gcm, chacha20-ietf-poly1305, 2022-blake3-chacha20-poly1305, xchacha20-ietf-poly1305.
+
Legacy stream cipher names recognized by the source (disabled in minimal builds;
some require backend support): table, rc4, rc4-md5, aes-128-cfb, aes-192-cfb, aes-256-cfb, aes-128-ctr, aes-192-ctr, aes-256-ctr, bf-cfb, camellia-128-cfb, camellia-192-cfb, camellia-256-cfb, cast5-cfb, des-cfb, idea-cfb, rc2-cfb, seed-cfb, salsa20, chacha20, chacha20-ietf.
+
The '2022-blake3-*' ciphers implement Shadowsocks 2022 (SIP022). They require
a base64-encoded pre-shared key supplied with *-k*: 16 bytes for
2022-blake3-aes-128-gcm and 32 bytes for the other 2022 ciphers.
Generate a 32-byte key with `openssl rand -base64 32`.
Passwords are not stretched into keys for these ciphers.

-b <local_address>::
Set the local address for outbound connections to destination servers.

-c <config_file>::
Use a configuration file.
+
Refer to `shadowsocks-c`(8) 'CONFIG FILE' section for more details.

-i <interface>::
Send outbound traffic through the specified network interface where supported by the platform.

-d <addr>::
Configure name servers for the internal c-ares DNS resolver. By default it uses the system resolver configuration.

-a <user_name>::
Run as a specific user.

-n <number>::
Specify the maximum number of open files. Requires a platform with setrlimit support.

-h::
Print help message.

-u::
Enable UDP relay.

-U::
Enable UDP relay and disable TCP relay.

-v::
Enable verbose mode.

-6::
Resolve hostname to IPv6 address first.

-A::
Deprecated one-time authentication option. Exits with an error; use AEAD ciphers instead.

--fast-open::
Enable TCP Fast Open where supported by the operating system.

--reuse-port::
Enable port reuse where supported by the operating system.

--tcp-incoming-sndbuf <size>::
Set TCP send buffer size for incoming connections.

--tcp-incoming-rcvbuf <size>::
Set TCP receive buffer size for incoming connections.

--tcp-outgoing-sndbuf <size>::
Set TCP send buffer size for outgoing connections.

--tcp-outgoing-rcvbuf <size>::
Set TCP receive buffer size for outgoing connections.

--no-delay::
Enable TCP_NODELAY.

--acl <acl_config>::
Enable ACL (Access Control List) and specify config file.

--manager-address <address>::
Set the manager control address: a UNIX domain socket path or an IP address and port.

--mtu <MTU>::
Specify the MTU of your network interface.

--help::
Print help message.

--plugin <plugin_name>::
Enable SIP003 plugin. (Experimental)

--plugin-opts <plugin_options>::
Set SIP003 plugin options. (Experimental)

--password <password>::
Set the password. The server and the client should use the same password.

--key <key_in_base64>::
Set the key directly. The key should be encoded with URL-safe Base64.

--mptcp::
Enable Multipath TCP.
+
Only available with MPTCP enabled Linux kernel.

--nftables-sets <sets>::
Linux builds with USE_NFTABLES only: add malicious IP addresses to nftables sets. Format: `[<table1>:]<set1>[,[<table2>:]<set2>...]`.

EXAMPLE
-------
It is recommended to use a config file when starting `ss-server`(1).

The config file is written in JSON and is easy to edit.
Check out the 'SEE ALSO' section for the default path of config file.

....
# Start the ss-server
ss-server -c /etc/shadowsocks-libev/config.json
....

INCOMPATIBILITY
---------------
The config file of `shadowsocks-libev`(8) is slightly different from original
shadowsocks.

In order to listen to both IPv4/IPv6 address, use the following grammar in
your config json file:
....
{
"server":["::0","0.0.0.0"],
...
}
....

`ss-server`(1) also does not understand "port_password" field in config file.
If you want to start up multiple server instances with a single config file,
please try ss-manager tool. See `ss-manager`(8) for details.

SEE ALSO
--------
`ss-local`(1),
`ss-tunnel`(1),
`ss-redir`(1),
`ss-manager`(1),
`shadowsocks-libev`(8),
`iptables`(8),
/etc/shadowsocks-libev/config.json