Procedure for Testing

TCP
1)In Your client machine(LAN)you have to run FTP server 2)In router configure Trigger port 443:443 and Target port 21:21(can be also added from webui). 3)External network(WAN) try to access ftp server of client machine using router uplink ip address(Goto terminal enter ftp -p 192.168.2.30) ftp port 21 will not start util you trigger any packet flow on port 443 in your client machine 4)In your client machine(LAN)run https service(In browser https://www.google.com) 5)Goto to your external network(WAN),try access ftp server of client machine(ftp -p 192.168.2.30).incoming traffic on ports 21 after seeing an outgoing packet on port 443
UDP
1)In router configure Trigger port 443:443 and Target port 2399:2399(can be also added from webui). 2)In Your client machine(LAN)you have to run : nc -u -l 2399 3)From external WAN machine run nc -u 192.168.2.30 2399 (192.168.2.30 - router uplink ip address) 4)In your client machine(LAN)run https service(In browser https://www.google.com) 5)Goto to your external network(WAN), access server of client machine(

ftp -p 192.168.2.30

Try sending some packets to wan client). Able to see incoming traffic on ports 2399 after seeing an outgoing packet on port 443

Supported devices

RaspberryPi

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