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First of all getting IPv6 rDNS to work should be fairly easy. Comcast has registered name servers for the inverse of 2603:3005/32 (the zone 188.8.131.52.184.108.40.206.ip6.arpa). The most simple (but not very efficient) way to handle this is for every business customer with fixed address space requesting delegation, delegate their whole space with one line per customer NS. As in for my zone:
$ORIGIN 220.127.116.11.18.104.22.168.ip6.arpa a.22.214.171.124.5 $TTL IN NS ns01.occnc.com. $TTL IN NS ns03.occnc.com.
Simple enough one would hope. If they prefer to break this into smaller zones then create a Comcast zone for 126.96.36.199 or a subset of that in the 188.8.131.52.184.108.40.206.ip6.arpa and put anyone within that zone in there. They could weigh lots of small zones vs a smaller number of large zones.
Second, this is causing grief for a lot of Comcast business users. We have repeatedly seen messages about having to keep a Hurricane Electric tunnel just to support a working mail server because HE knows how to do rDNS for IPv6 even though Comcast can't figure it out. BTW- another solution is to colo a 1U server with someone and HE does 1U colo.
So my question expanded from the subject line is "Is there any projected date to get IPv6 rDNS working for Comcast business customers?" A second question is "Is there anyone in Comcast support that could make the above change (when no on is looking, maybe) to the 220.127.116.11.18.104.22.168.ip6.arpa. zone file?"
For now I'm just using the HE tunnel for all IPv6 even though I could use it for all but a the host mta2-em1.orleans.occnc.com.
Hi curtisv and welcome the business forums. I would like to ...
Hi curtisv and welcome the business forums.
I would like to look into your name server request. Please private message me your full name, the name of your business, the full address and the phone number associated with your business account.
Co-worker put our Router into Bridge Mode, to get it out of bridge mode he did a reset and now we have lost our Static IP.
How do we get it back?
Also like many here I have DPC3941B, I want to use Bridge Mode but as my co-worker found out you lose your static ip in Bridge mode.
My DPC3941B does not have any setting for "pass through" or True Static IP Port Management.
...Through Mode: http://forums.businesshelp.comcast.com/t5/Equipment-Modems-Gateways/True-Bridge-Mode-vs...
Hi CDC-NOC. I replied to your private message. Please send a response there. I'll need your information to reload your static.
Also, here's a link on Bridge Mode and Pass Through Mode:
The original topic is locked - the last update was on May 29th.
This past week, there were reports that the VPNFilter Malware is worse than originally reported.
I understand that I'm supposed to provide my own routers, switches, firewalls, etc because the firewall on the Cisco 3941B has some some basic settings. I am thinking about putting the Cisco 3941B into bridge mode so that my own routers & firewalls can take care of the blocking.
On the "private" side of the Business Wireless Gateway, everything has been reset and the firmware has been upgraded.
Before I configure bridge mode, I have a question is about the firmware version on the Business Wireless Gateway itself. It's DOCSIS Software Version: dpc3941b-v303r20421762-180419a-CMCST. When will there be an updated version?
"Cisco discovered that the malware could perform man-in-the-middle attacks. That means the malware can inject malicious content in traffic that passes through the infected router and its targets.
Similarly, it can steal login credentials that are being transmitted between a computer and a website. The usernames and passwords can be copied and sent to servers controlled by the hackers. How is that even possible? VPNFilter downgrades HTTPS connections to HTTP, which means the malware is essentially looking to bypass encryption.
Cisco thinks that the VPNFilter threat is bigger than initially believed."
Rebooting the router may not be enough:
"Rebooting the router will unload the Stage 2 and Stage 3 components of VPNFilter, but Stage 1 will start again after the router reboots. So while the most malicious components will be disabled, VPNFilter will still be present on your device.
The only real way to fully remove this infection is to reset your router back to factory defaults, which will also reboot the router. Unfortunately, this process will require you to setup your router again, add an admin password, and setup any wireless networks that are configured. "
The vast majority of Comcast-provided residential and business gateways and modems were not impacte...
The vast majority of Comcast-provided residential and business gateways and modems were not impacted by the 'VPNFilter' malware.
For the very small number of Comcast-issued devices that may be affected, we are in the process of proactively communicating with those customers and exchanging hardware where needed
I have Comcast Business 150/20 service. For the last few months its been great. Really has. We had a storm last week and service (and power) was knocked out several times. Outages were acknowledged on the Comcast Business web site. Service was retored but my upload speeds have been miserable since. About 5 to 6 Mbps where I was getting 22 or so, just above what I was paying for.
I have checked signal levels on my Cisco DPC3939B modem as suggested in the pinned troubleshooting post in this forum and all looks just fine. It really looks as if my modem has just been re-provisioned back to a slower upload limit. Downstream speeds returned to normal within a few hours of the service being restored. Just not upload.
Can someone give me a hand and check this or suggest what I can do to get my upload speed back?
Hi jcthorne. I can certainly assist with your speeds. I'll need to review your se...
I can certainly assist with your speeds. I'll need to review your services for any signal issues. Please private message me your first and last name, the name of your business, the full address of your business location and the phone number associated with your business account.
I noticed that my current 50/10 MBit plan is no longer offered to new customers. Instead, the 75 MBit plan is now offered for the price I am paying for 50 MBit. Has anybody tried upgrading? I wouldn't mind extending my contract term, but don't want to get stuck with some setup fee for someone flipping a switch. Also: What is the upstream speed with 75 MBit? My main bottleneck is uploading. the 50MBit download works ok for me.
I discovered today that I have no hotspots available to me whatsoever after upgrading to business internet. I have been reading posts here about being able to log into the business portal and enable wifi, but I do not have that option. In fact, I do not even have a tools tab that is referred to in the posts. I am curious if wifi is turned off for my account as I recall making a comment to the installer that I do not need wifi on the router since I have my own access points. Did he perhaps disable wifi access for my entire account? How would I go about checking that?
I need my router password reset. I must of miss type when i was changing it from default
I have a Linux server with Postfix configured to use smtp.w14e.comcast.net and a valid @something.comcastbiz.net username and password. It was working some time ago, but I've now discovered that the relayhost = [smtp.w14e.comcast.net]:587 no longer resolves in DNS. What outbound SMTP host should I be using for this now?
Hi HCCMgr. My apologies for the error. I can certainly still assist with you...
My apologies for the error. I can certainly still assist with your server issue. Could you try private messaging again? Please provide your first and last name, the name of your business, the full address of your business location and the phone number associated with your account.
I logged in here because my service is being flaky - despite the modem being up and running (and connected) I don't have connectivity to the outside world until I ping a known IP address out on the Internet. This apparently causes my router to set up a route and start working.
On checking here, I discovered that my current modem is EOL (it's an SMC-D3G). Where (link) can I request a new or repaired modem? Not having a constantly up link is making email to my static IP difficult. I currently have 50/10 service.
Hi ErikG. I can certainly assist with your modem. With Comcast Business, it ...
I can certainly assist with your modem. With Comcast Business, it is policy to have all installations require a tech visit. I can set this up for you. Please private message me your first and last name, the name of your business, the full address of your business location and the phone number associated with your account.
I was doing some research on security and was looking for all the ports that are blocked by default on the gateway. The google search brings up the page that used to work on here but now it fails. Can you please post them or a page so I can confirm the ports I need blocked are indeed blocked.
Hi ewatts76. I definitely can help you out with the link you're looking for....
I definitely can help you out with the link you're looking for. I posted this below. Please let me know if you need anything.