I'm running a server on my local PC on port 8080. I can go to a browser and do http://localhost:8080 and it works.
I'll refer to my public IP as PUBLIC_IP and private/internal as PRIVATE_IP.
In the browser (running on server PC), I can also do http://PUBLIC_IP:8080 and http://PRIVATE_IP:8080 and both work.
I set up port forwarding in the router software as:
TCP external port 8080 >> internal port 8080 to my PRIVATE_IP device.
When I go to canyouseeme.org and enter my PUBLIC_IP and 8080 - I get:
"Error: I could not see your service on PUBLIC_IP on port (8080)"
I looked at the router logs and see:
[LAN access from remote] from 52.202.215.126:55574 to INTERNAL_IP:8080
I assume 52.202.215.126 is the ip address of canyouseeme.org server.
But it seems to be using port 55574 - instead of 8080. And it also changes on each request.
That's the external port that the router sees right?
But looks like the request is getting to the router - just not to my server - getting blocked?
I've turned firewalls off.
Any help appreciated.
Here's the tcldump
logs - running on the server PC - so traffic is getting to the server PC.
Fulls-Mac-mini:conf mini$ sudo tcpdump 'tcp port 8080'
tcpdump: data link type PKTAP
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on pktap, link-type PKTAP (Apple DLT_PKTAP), capture size 262144 bytes
16:08:26.451497 IP ec2-52-202-215-126.compute-1.amazonaws.com.48092 > 192.168.1.12.http-alt: Flags [S], seq 3119124296, win 26883, options [mss 1460,sackOK,TS val 298290090 ecr 0,nop,wscale 7], length 0
16:08:26.451570 IP 192.168.1.12.http-alt > ec2-52-202-215-126.compute-1.amazonaws.com.48092: Flags [S.], seq 449444859, ack 3119124297, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 683632630 ecr 298290090,sackOK,eol], length 0
16:08:27.449719 IP ec2-52-202-215-126.compute-1.amazonaws.com.48092 > 192.168.1.12.http-alt: Flags [S], seq 3119124296, win 26883, options [mss 1460,sackOK,TS val 298290340 ecr 0,nop,wscale 7], length 0
16:08:27.449751 IP 192.168.1.12.http-alt > ec2-52-202-215-126.compute-1.amazonaws.com.48092: Flags [S.], seq 449444859, ack 3119124297, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 683633624 ecr 298290340,sackOK,eol], length 0
16:08:28.453107 IP 192.168.1.12.http-alt > ec2-52-202-215-126.compute-1.amazonaws.com.48092: Flags [S.], seq 449444859, ack 3119124297, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 683634624 ecr 298290340,sackOK,eol], length 0
16:08:29.453652 IP ec2-52-202-215-126.compute-1.amazonaws.com.48092 > 192.168.1.12.http-alt: Flags [S], seq 3119124296, win 26883, options [mss 1460,sackOK,TS val 298290841 ecr 0,nop,wscale 7], length 0
16:08:29.453700 IP 192.168.1.12.http-alt > ec2-52-202-215-126.compute-1.amazonaws.com.48092: Flags [S.], seq 449444859, ack 3119124297, win 65535, options [mss 1460,nop,wscale 6,nop,nop,TS val 683635624 ecr 298290841,sackOK,eol], length 0
My internal IP address is 192.168.1.12
The log is a result of https://www.canyouseeme.org/ using my public ip address + 8080.
When I look at Tomcat logs access file - there's no entry. So either it's refusing connection (and not listing it in the logfile) or it's not getting to Tomcat.