Guess I was wrong about cPanel, here is the response I got to your suggestion:
"On our servers we run hsphere control panel and it does not has security firewall. IPs can be banned on router level only as on windows servers we do not have firewall at all. We have double check the issue from our end and may assure you that there are no blocks against your IP address not on our network router.
Kindly check the issue once again with your ISP."
I did mention to them that this affects all the domains for that account, not just bocafallsweather. Appreciate your help, do you have any other suggestions?
This has got to be one of the stranger network-related threads I've seen.
I've had NAS issues with my AEBS, but nothing like what's been posted here.
I've been using the same AEBS for 3 or 4 years, with Comcast, in two different cities in the Chicago area.
I've never had a problem like you guys are.
I've had a VPN nailed up, 24/7, for that whole time. The same Cisco 871w has been sitting behind my AEBS, bangin' away day and night, going to both the same static IPs and names requiring DNS without fail. I also work at home and spend a lot of time going to my employer website outside the VPN.
If it's a software issue, I don't see why rebooting it wouldn't fix it. If you have to replace the hardware, yeah, sounding like an outside interface related issue. I don't think the AEBS supports MAC spoofing, but that would be a solution.
Sorry to hear you guys are having such problems. It can be maddening when you can't track it down.
I have been experiencing the same problem with a site that I own and manage hosted with NameCheap.com. I couldn't get to the site via browser or FTP when using my AE, although email worked fine and I was able to ping it.
I called NameCheap and it turned out my IP was indeed blocked for the following reason:
Failed SMTP AUTH login from 22.214.171.124 (US/United States/-): 5 in the last 300 secs
so it looks like mail in concert with my AE caused it, although mail wasn't affected (I use Google Apps for my email server).
Anyone know of anything I can do to prevent this from happening again?
Thank you Tezgno,
After having bought and installed a new Netgear router, everything worked fine.
For about 2 months.
Then, same problem.
I called my web guy and he said we were not blocking IPs with the software you said we could find in Cpanel.
He emailed the hosting company, gave them my IP address, and they did something on their end to solve the problem.
In this case, Vodahost (Texas) was the host, and my router could not access my domains, my emails and other domains on that same hosting account.
So, the problem was definitely the host/server. But the problem seems to have been embedded deeper than Cpanel, and not correctable by user.
Hopefully this is the last of this issue for me. It's cost me days of time and a new router.
I hope this post assists others as well.
FYI, I had not engaged any QoS settings when I set up the new Netgear router. I saw no need for them as I'm not a gamer or excessively high bandwidth user. Perhaps this would have prevented the problem from recurring, as you suggest.
If you read back a few posts, I actually explained what is likely causing the issue (it is not Cpanel related per say, but related to a plugin that many host are installing with Cpanel called ConfigServer & Firewall). By default, you can be permanently banned from your server and sites if you:
1. Failed login to your email 10 times within 5 minutes
2. Failed login to smtp 10 times within 5 minutes
You can be temporarily blocked if you:
1. Failed login via SSH 10 times with 5 minutes
2. Failed login via the Cpanel web address 10 times within 5 minutes
The problem that most of you are experiencing is due to the first two listed (failed login to email 10 times with 5 minutes). If you try but fail to login to your email 10 times within a 5 minute block, CSF will permanently ban your IP address as the default behavior.