Getting weird 1.1.1.1 ping resolution and no internet connectivity at times?

[mbressman]

I'm hoping someone might be able to assist me. I was over at a colleague's house helping set up a wireless network for them. They way I have it set up is the cable modem runs to a wireless Netgear router in the attic. From there, a wired connection runs to a Linksys E4200 in a closet on the first floor. Both of them are outputting a 2.4 GHz and a 5 GHz wireless network (let's call the SSID's "home" and "home-5G"). I also have a Netgear WNR2500RP set up on the first floor a few rooms over - I basically just want to use it as a bridge to connect an older wired printer, but it also seems to be repeating the 2.4 and 5 GHz networks (under new SSID's - "home-EXT" and "home-5G-Ext-5G"). I then have a Linksys RE2000 set-up on the second floor (again, just basically to use a wireless bridge to connect an older wired HP LaserJet), and I'm not sure if it's also repeating or not, but I don't think it's putting out any new SSID's.

Initially, I was going to ignore the two EXT SSID's, and the 5 GHz primary SSID and just have everyone connect to the 2.4 GHz SSID. However, as the day went on, more and more of the computers connected to the home SSID (2.4 GHz) started not being able to access the Internet and when I would ping anything it would resolve to 1.1.1.1 - anyone have any idea why this might be happening? Thanks!

- Marc

 

[drebo]

1.1.1.1 is a very common captive portal address. I would make sure something isn't misconfigured.

 

[mbressman]

1.1.1.1 is a very common captive portal address. I would make sure something isn't misconfigured.

Very possible, as some of these devices might have that as a feature, but if it was a captive portal, wouldn't all web requests redirect to it?? In my case, web page requests were just timing out...?

 

[drebo]

If the captive portal is misconfigured, i.e. it's configured to redirect to 1.1.1.1 but 1.1.1.1 isn't configured to serve anything, then what you describe would be the case.

It sounds like something isn't configured properly.

 

[SecurityTheatre]

Very possible, as some of these devices might have that as a feature, but if it was a captive portal, wouldn't all web requests redirect to it?? In my case, web page requests were just timing out...?

To be honest, plugging in a router and not looking at the config is a recipe for problems.

You're saying "oh hey look, it has wireless enabled! Wow, neat, I won't bother to change that, even though I don't want it" tells me that any number of other features might be enabled that you also don't know about.

Go look at the config and disable stuff you don't need. The captive portals work for guest access and probably redirect DNS queries, but if you're doing some sort of double-NAT, then the DNS can get changed, but without the subsequent actual access to the portal login page.