Testing router security

[nightcustard]

Hi

I'd like to test the 8900AX2400's WAN-side firewall without having
to use a friend's internet connection or a web-based service. The former is not something I can do very often without risking annoyance, whilst the latter generally only offer limited functionality (unless you pay!)
The idea is to run nmap on a computer attached to a second router connected to the internet-facing end of the 8900's internal router - is such access possible?
I suspect not but thought it worth asking

Cheers Mike

[billion_fan]

Hi

I'd like to test the 8900AX2400's WAN-side firewall without having
to use a friend's internet connection or a web-based service. The former is not something I can do very often without risking annoyance, whilst the latter generally only offer limited functionality (unless you pay!)
The idea is to run nmap on a computer attached to a second router connected to the internet-facing end of the 8900's internal router - is such access possible?
I suspect not but thought it worth asking

Cheers Mike

I don't think that will work as you will be behind the same WAN IP

[nightcustard]

Hi

I'd like to test the 8900AX2400's WAN-side firewall without having
to use a friend's internet connection or a web-based service. The former is not something I can do very often without risking annoyance, whilst the latter generally only offer limited functionality (unless you pay!)
The idea is to run nmap on a computer attached to a second router connected to the internet-facing end of the 8900's internal router - is such access possible?
I suspect not but thought it worth asking

Cheers Mike

I don't think that will work as you will be behind the same WAN IP

Thanks BF. The idea came from a router security testing website - some ISPs block port scans and it was suggested as a way of avoiding that issue. It assumes the modem is a separate box, so you've got access to the input of the router - something the 8900 doesn't offer, I assume.
I've also found port scanning my external IP address using a tethered Android phone reports (falsely) all the 8900 ports are open (I think it's some sort of anti-scanning feature of the mobile internet). Ah well, back to relying on 'Shields Up'!
Cheers, Mike