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what is outgoing/outbound connection source port & destination port ?

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linux-howto

http://ubuntuforums.org – i want to allow outgoing connection, mine is destination port or source port? who is destination here, my computer or the server/website im trying to connect & who is source. eg : iptables -A OUTPUT -o eth0 -p tcp --dport 443 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A INPUT -i eth0 -p tcp --sport 443 -m state --state ESTABLISHED -j ACCEPT here dport 443 (is my port or the port of the computer im trying to connect) inshort, INCOMING/INBOUND MEANS { FROM/SOURCE PORT /OTHERS PC - TO/DESTINATION PORT /MY PC } OUTBOUND /OUTGOING MEANS ? PLS REFER TO THE ABOVE EXAMPLE AND EXPLAIN (Hardware)