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NAT-ing same port different ip´s

hy

i have situation that i have alarm devices in LAN that comunicate over internet over port 7700 thats fine but packet needs to come back allways from same ip back to communicator different ip :
communicator 1 send packet to wan on port 7700 wan ip replys back on port 7700
communicator 2 send packet to wan on port 7700 wan ip replys back on port 7700
communicator 3 send packet to wan on port 7700 wan ip replys back on port 7700
how to configure astaro to route back packet to communicator according to sending rule

many thanx
bojan

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0 Simon Shaw over 17 years ago

Not easy to do without connection trackers sorry.

If the WAN side had different IP's???
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0 color_n over 17 years ago in reply to Simon Shaw

Wan side have static ip , and remote side on internet have static ip also .
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0 BarryG over 17 years ago in reply to color_n

Is the reply immediate?
If so, I think simple MASQ should work.

Barry
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0 color_n over 17 years ago in reply to BarryG

could you give a simple example , i need to translate one wan ip 8x.xx.***.xx port 7700 to different ip´s in lan same port ,midst sending from certain ip from LAN.when local ip 1 send packet he need to recieve answer , then local ip 2 send packet ... they are all using same ports but different ip´s localy .
please advice , thanx.
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