Totally stucked in ssh port forwarding

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http://www.unix.com – Hello my friends , i am totally stuck in ssh port forwarding topic i had learn iptables and other networking topic without any problem but ssh port forwarding is headache 1. local port = what is this ? is this incoming traffic or outgoing traffic 2. remote port = same as above 3. dynamic port = same as above i know this topic is very easy but seriosly i am stucked in this topic I could not find any proper documentation on this topic on internet , every topic that i found is not well documentated , i mean topics are not properly written or explained . Any Help Thanks (HowTos)