SYNOPSIS
dns2tcpd [ -h ] [ -F ] [ -i address ] [ -f config_file ] [ -p pidfile ] [ -d debug_level ]
DESCRIPTION
dns2tcp is a network tool used to encapsulate TCP communications in DNS. When connections are received on a specific port all TCP traffic is sent to the remote dns2tcpd server and forwarded to a specific host and port. Multiple connections are supported.
It was written for demonstration purposes
OPTIONS
- -h
- Help Menu
- -F
- Run in foreground
- -i IP address
- IP address to bind (default 0.0.0.0)
- -f config file
- Configuration file to use
- -p pidfile
- File where our pid will be written
- -d debug level
-
Change debug level. Levels available are 1, 2 or 3.
CONFIGURATION FILES
By default ${HOME}/.dns2tcprcd is used if no configuration file is specified. The resource syntax is <resource-name>:<server>:<port>. Multiple resources can be defined in multilines, but must be comma separated.Here is an example :
- listen = 127.0.0.1
port = 53
user = nobody
chroot = /tmp
pid_file = /var/run/dns2tcp.pid
domain = dns2tcp.hsc.fr
debug_level = 0
resources = ssh:127.0.0.1:22 , smtp:127.0.0.1:25,
pop3:10.0.0.1:110