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GoTesla's profile



2 Messages

Thursday, February 8th, 2018 10:46 PM

Why is my desktop's IP not consistently accessible from my iPhone on the same LAN?

I just got Fiber 1000 installed yesterday, and the gateway (router) is ARRIS BGW210-700.


I'm a software engineer and have run my own local server on my desktop, whose IP is: 192.168.1.[redacted]


When I try to browse to that IP (or to http://mycomputername.local) from my iPhone, it doesn't work. Similarly, when I try to use the Network Tools iOS app and ping that IP, it just says "Timeout".


Then, if I temporarily disable the Windows 10 Firewall (which I've never had to do in all the years I've coded websites), pinging the IP from the Network Tools iOS app suddenly works.


And pinging `mycomputername.local` also then works (and resolves to the correct IP).


Then, what's really interesting is that I can re-enable Windows Firewall and then continue browsing (using Chrome on my iPhone) various pages such as http://mycomputername.local/page1 and http://mycomputername.local/page2 even when the Firewall is active.


But then eventually http://mycomputername.local fails to load (and pinging the IP times out again too). 


It's as if my desktop is only ever visible on the LAN for a short lifespan before becoming invisible, and then I need to temporarily disable Windows Firewall again to revive it.


What is going on??


What settings on my router or Windows PC can I change to enable other devices on my LAN to browse to it consistently?

Community Support


232.7K Messages

6 years ago

   Greetings @GoTesla,

 Thank you for reaching out to AT&T Community and Forums! I understand how important it is to be able to access your  IPhone through your PC. I would be happy to help!

 Since you are able to access the  ios tool and the  I phone access without the firewall active I would  recommend making an exception and set the  your firewall to allow  both of the systems without the firewall  up.

To get a better Idea of what can be done with the firewall on your PC, you’re IPhone and the Modem you would need to speak with respective manufacturers

If you have any further questions or concerns please let us know.

Thank you for your time!

Traci, AT&T Community Specialist



2 Messages

6 years ago

@ATTCares, although I appreciate your reply, I think you didn't read my question.

You said "to access your  IPhone through your PC". But that's not what I'm trying to do.

My desktop PC runs a server, and my iPhone needs to be able to visit its IP (or its hostname such as http://mycomputername.local/). 

This works inconsistently.
It's not the fault of Windows Firewall given that sometimes the PC is accessible even when the firewall is enabled.

I'm curious why the ARRIS BGW210-700 router from AT&T would be blocking pings to the desktop IP.

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