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Open Ports (WAN side) on R7000 Router
An nmap scan (WAN side) on my R7000 router indicates that there are two ports open on my R7000 router: 80/tcp (http) and 1720/tcp (h323q931). My method to perform a WAN side scan on the router is to...
I think I have the problem solved (or at least narrowed down substantially), and neither the router (or modem) are the cause of the open ports discovered with nmap. Looks like it has something to do with ISP (Comcast) i.e. I think I am hitting my ISP first, which is showing open ports for 80 and 1720.
I first disconnected every device from the network, rebooted ther router, and then hit my public IP address with nmap (WAN side, from an outside network). Still open ports, so not any of the devices. Then I powered down the router, waited 10 minutes, and tried again. Still open ports, so not the router. And then I powered down the modem, waited 10 mins, tried again, and still got the open ports on my public IP address! I'm not sure how it that all works, but apparantly I am hitting my ISP first with nmap (or something of that nature).
Thanks for all of your efforts to help me trouble shoot! --maap.
Very odd indeed?
I also have/had the SB5141 (exchanged it for a UBEE DVW3201 on Fri.) but my test was done with the UBEE??? Hmm....
Might be worth trying to have your F/W block incomming if you can? Then test again... see where it is coming from, the PC or router?
NETSTAT -a should show all the open ports for your PC, does that show those open?
I think I have the problem solved (or at least narrowed down substantially), and neither the router (or modem) are the cause of the open ports discovered with nmap. Looks like it has something to do with ISP (Comcast) i.e. I think I am hitting my ISP first, which is showing open ports for 80 and 1720.
I first disconnected every device from the network, rebooted ther router, and then hit my public IP address with nmap (WAN side, from an outside network). Still open ports, so not any of the devices. Then I powered down the router, waited 10 minutes, and tried again. Still open ports, so not the router. And then I powered down the modem, waited 10 mins, tried again, and still got the open ports on my public IP address! I'm not sure how it that all works, but apparantly I am hitting my ISP first with nmap (or something of that nature).
Thanks for all of your efforts to help me trouble shoot! --maap.