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actually i read many sites about iptables but i need to know this mechanism of :
-i know when i SYN (open page) it go via output, then SYN-ACK (Reply page) At INPUT. Right
-let say i have server and clients so why i when i do:
1) on OUTPUT :iptables -A OUTPUT -m state --state NEW,ESTABLISHED -j ACCEPT
2) on INPUT: iptables -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
3) on FORWARD: iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
( all clients can open anything regardless if i DROP or Decline for ex: i want specific ports on forward to only open) why not happen!
my theory is that clients when they open page ( it go from FORWARD to OUTPUT then page reply to INPUT and forward it to FORWARD chain) can someone tell me how this happen and if i'm wrong! really, i read many sites and didn't got it exactly this one!
Thanks alot for your help , and hope someone can help me!
NOTE: All Policies Are in DROP Mode (The INPUT,OUTPUT,And The FORWARD CHAIN)
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