|-c file||configuration file.|
|-i i/f||Interface, or listening port. See Listening Port.|
|-m num||Maximum child process for non-threading daemon. Or, number of thread for threading daemon.|
|-o minutes||Idle transfer timeout in minutes. 0(zero) means no timeout(default.)|
|-p file||PID file; stores main process or main thread process ID.|
|-u file||srelay password file used in intermediate SOCKS5 server.|
|-f||Run foreground. (not tested well :-p)|
|-r||Try resolve client ip to name on logging.|
|-s||Logging to syslog, even if running foreground.|
|-t||Disable threading. (valid in thread-enabled configuration)|
|-b||Avoid BIND port restriction.|
|-g||Use the same interface for outbound as inbound.|
|-v||Show version info.|
|-h -?||Show help.|
Specifing the server listening ports are in following format.
-i options can be appear multiple times if youd like to have a lot of holes.
-i 192.168.1.5 Single IP spec. If no port number is specified, defaults to 1080/tcp. Server socket will be 192.168.1.5 port 1080. -i 192.168.1.5:9999 Single IP with port. Server socket will be 192.168.1.5 port 9999. -i my.socks.host:5432 Hostname is also accepted. -i :1234 No host IP or hostname is specified. Server socket will be INADDR_ANY port 1234. -i [2003:268:1234:4321:250:8bff:fea8:1234]:1234 IPv6 address must be surrounded by [ and ]. In most of the cases, you have to escape [ and ] characters against your shell.
If no -i option is specified, default port is INADDR_ANY/INADDR6_ANY port 1080 .
The socks version 5 authentication is mechanism for authenticate the server user. The srelay only supports No Authentication and Username/Password Authentication. On the Username/Password authentication, the srelay using the server hosts account information. For instance, using UNIX hosts password database. This is deprecated if you are in the network with full of sniffers :) Why ? er, plain text password is launched by the client every time at connecting the server. I recommend not to use -ap option.
When the srelay is working as the intermediate of socks servers chain, it is some time required to use socks authentication to connect to next-hop socks server. In this case, you can specify the username and password for the next-hop socks by using srelay.passwd file. This is done whether you are specifing -a option or not.
Configuration file format.
# this line is comment.
# destination port range next [next-p x-next x-next-p]
# subnet length
188.8.131.52/24 any 10.10.10.1
# subnet mask in doted format higher port is 65535
184.108.40.206/255.255.255.128 512- 10.11.22.1 11080
# lower port is 1
220.127.116.11/25 -511 10.11.22.2
# IPv6 destinations go through Gateway
:: - 18.104.22.168
# IPv4 destinations go through another Gateway
0.0.0.0 - 22.214.171.124
# (IPv6 to IPv4 destinations)
0.0.0.0 - 3002::1:4321:250:8bff:ffa8:1234
# no next-hop means connect direct.
If a next-p (next-hop socks port) is ommitted, is defaulted to 1080, as you can guess. A next-hop socks port can be like, 8080/H or 8080/S, where H, S means HTTP, SOCKS, respectively. this also defaults to SOCKS.
HTTP relaying method is experimental, and supports minimized spec of HTTP Proxying.
You can be on your network environment like this.
srelay.conf setting could have the third Host, [FilreWall] like this.
# dest dest-port proxy proxy-p proxy2 proxy2-p
Dest any Socks-Island 1080 FireWall 8080/H
The listing order of proxy and proxy2 is farthest first order.
Username/Password information for connecting next-hop socks server.
# this line is comment.
# next-hop server username password
126.96.36.199 hogehoga xyz$12#
10.11.22.1 opopop tutut555
/usr/local/etc/srelay.conf default configuration file. /usr/local/etc/srelay.passwd username/password information using in connecting to the next-hop socks v5 server. /var/run/srelay.pid default PID file. /etc/hosts.allow /etc/hosts.deny (if supported in compile time,) tcp_wrappers configuration. TAG name is srelay.
The following signals are meaningful:
SIGHUP reload srelay.conf. SIGTERM Exit.
RFC 1928 SOCKS Protocol Version 5,
RFC 1929 Username/Password Authentication for SOCKS V5,
|-->||SRELAY (8)||27 Mar 2003|