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Created by Unknown User (aishwarya_natarajan2), last modified by Unknown User (praveen.v) on Feb 08, 2024
Introduction
Port triggering is a network management strategy characterised by dynamic facilitation, opening, and forwarding of specific inbound ports based on discerned patterns in outbound traffic. This adaptive approach optimises network efficiency by selectively permitting inbound data in response to recognised internal network activities.
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
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
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 - The Netcat (nc) command is a command-line utility for reading and writing data between two computer networks. The communication happens using either TCP or UDP
1)In router configure Trigger port 443:443 and Target port 2399:2399 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 browserhttps://www.google.com) 5)Goto to your external network(WAN), access server of client machine(Try sending some packets to wan client). Able to see incoming traffic on ports 2399 after seeing an outgoing packet on port 443
TCP - iperf is a tool to measure the network performance.
1)In router configure Trigger port 443:443 and Target port 5001:5001 2)In Your client machine (LAN)you have to run: iperf -s -B 10.0.0.106 -i 1 -p 5001 (10.0.0.106 - LAN IP) 3)From external WAN machine run iperf -c 192.168.161.216 -p 5001 -i 1 -t 60 -B 192.168.160.173 (192.168.161.216 - router uplink ip address, 192.168.160.173 - WAN PC Ip) 4)In your client machine (LAN)run https service (In browserhttps://www.google.com) 5)In the WAN PC you will be able to see the traffic and, in the LAN PC, you will be able to see the traffic summery once you stopped the step 3.
By default Port triggering will be disabled in the RPI .We can enable using two methods .One is through DM and other way is through UI
Step 1: Login to webui, from navigation -> Advanced ->Port Triggering. Click on Add Port Trigger.
Testing Steps (TCP and UDP)
TCP :
Router configure Trigger port 443:443 and Target port 21:21.
From External network(WAN) try to access ftp server of client machine(LAN client) using router uplink ip address(Goto terminal enter ftp -p 192.168.2.30 in WAN client), while client machine(LAN)run https service(In browserhttps://www.google.com)
UDP :
Router configure Trigger port 443:443 and Target port 2399:2399.
In Your client machine(LAN)you have to run : nc -u -l 2399 From external WAN machine run nc -u 192.168.2.30 2399, while client machine(LAN)run https service(In browserhttps://www.google.com)
Step 1: Login to webui, from navigation -> Advanced ->Port Triggering. Click on Add Port Trigger (Configure Trigger port as 443:443 and Target port as 5001:5001)
Step2: In Your client machine (LAN)you have to run: iperf -s -B 10.0.0.106 -i 1 -p 5001 (10.0.0.106 - LAN IP)
Step3: In the WAN machine run iperf -c 192.168.161.216 -p 5001 -i 1 -t 60 -B 192.168.160.173 (192.168.161.216 - router uplink ip address, 192.168.160.173 - WAN PC Ip) same time in the client machine (LAN)run https service (In browserhttps://www.google.com)
