Przekierowanie portów (zewnątrz->wewnątrz, komputer w sieci)

http://www.boutell.com/rinetd/

deamon który w baaardzo prosty sposób pozwala na przekierowanie portów




# example configuration file for rinetd
#
#

# to forward connections to port 80 on 10.10.10.2 to port 80 on 192.168.0.2
#  10.10.10.2 80 192.168.0.2 80

# to forward connections to port 80 on all addresses to port 80 on 192.168.0.2
#0.0.0.0 80 192.168.0.6 80

# access controls can be set with allow and deny rules
# allow and deny before the first forwarding rule are global
# allow and deny after a specific rule apply to it only

# this rule allows hosts from 172.16.32.0/24 netblock
# allow 172.16.32.*

# this rule denies the host 192.168.32.12
# deny 192.168.32.12

# rinetd supports logging - to enable, uncomment the following
# logfile /var/log/rinetd.log

# by default, logs are in a tab-delimited format. Web common-log format
# is available by uncommenting the following
# logcommon