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Sunday, December 3rd, 2023 6:27 PM

Closed

My Own Email/Web Site Server Is Blocked By xFinity

Got a strange one - I have a web site and email addresses at Playatech.com served in the cloud, and a week or so ago my Mac Mail, Safari, and Chrome stopped accessing them with time-out errors, but only on my home network. Same problem on other devices, but no problem accessing site/email from cellular. I have since found that I can access them fine on my home network when I activate the Bitdefender VPN app on my Mac, which I assume tunnels through whatever firewalls xfinity puts in its modem or access gateways (using Netgear CM-1000 cable modem into Nighthawk router). Therefore I assume my DNS servers got blacklisted somewhere by xfinity for some reason. 

How can I get xfinity to unblock my Playatech.com servers NS1.BRACKETMEDIA.US and NS2.BRACKETMEDIA.US so that I can access my own web site and email from my home office without needing a VPN? 

Thank you to anyone with a good answer! 

Official Employee

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2K Messages

1 year ago

@user_yw8z5o Hello try this link https://spa.xfinity.com/postmaster?faq=avoid-blocks-ipv4 to see if you can have it unlocked , if that doesent work please reach out to our Customer Security Assurance team this link https://internetsecurity.xfinity.com/help/report-abuse shows how to reach them

Problem Solver

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1.5K Messages

1 year ago

Also looks like you may have some control over IPV6 on your Netgear (nighthawk if that wasn't clear) -- depending on the specific model and firmware.  As long as you're messing with it, after you change DNS servers out to either the ones above, or some other public DNS of your choice, if it still doesn't work it might still "prefer" IPV6 over IPV4. 

Cloudflare IPV6 DNS are here:

2606:4700:4700::1111
2606:4700:4700::1001

If it still doesn't work, you can try to disable IPV6 entirely for a test.  Drop, then reconnect the WiFi/Ethernet connection on your device or reboot again.

Work then?  If not, there's a tool called nmap that can preform a traceroute type of portscan in both ICMP/TCP and a UDP scan on a port that may shed some light on it too. 

(edited)

5 Messages

@flatlander3​ Thank you for looking at this, and the suggestions. They are all way above my head as a user but I will either try it this weekend after screenshots of current settings or get some local tech support to help me with the router settings. Keeping fingers crossed:)

Problem Solver

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1.5K Messages

@user_yw8z5o​ Go to netgear support and look up your Nighthawk model number.  Grab the manual for it.  Log into the Nighthawk.  DNS settings will be in the internet connection settings section usually, and you can add them there.  It's pretty simple. 

You may have to reboot both the modem and the Nighthawk after you change the settings.  Reboot your laptop/PC at the same time.  When everything comes back, your network settings should propagate.  For windows, get a cmd prompt and type "ipconfig /a" to see your new DNS settings.  Linux uses nmcli these days "nmcli device show <interface name". 

If it works then, great.  If not, you can poke it with a stick further and try to see what is going on. 

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