Открытие портов в Ubuntu

sudo iptables -F

sudo iptables -X

sudo iptables-save

# Generated by iptables-save v1.4.4 on Fri Oct 28 11:14:13 2011

*filter

:INPUT ACCEPT [570:67701]

:FORWARD ACCEPT [0:0]

:OUTPUT ACCEPT [10:531]

COMMIT

# Completed on Fri Oct 28 11:14:13 2011