I am having an issue understanding the problem of why my site will load on some networks, but not others.
I am getting "ERR_NAME_NOT_RESOLVED" on Chrome in the following environments:
1) Office Network - This made me believe that it was a firewall issue
2) Open WiFi Network at a Coffee Shop - This made me believe that it was not a firewall issue
I am able to access the site without any issues from my home network and also when turning my phone into a hotspot.
I did some digging and was hopeful that adding an IPv6 record to my DNS would have resolved the issue(Maybe those networks were pulling from IPv6) but that also did not resolve the issue.
I ended up running a test on MXToolBox.com and received these warnings back.
MXToolBox Response
I do not have any email setup with this domain so I am not concerned about the email record errors, but the one I can't figure out is the top one with Category: DNS and the message of "DNS Record not found". The "More Info" link says "We did not find a DNS record at the location specified. You should check with DNS provider to ensure the record has been published and there are no typos."
I have an A record pointing to the correct IP(As I am able to access it from my home and cell phone networks). I added an AAAA record for IPv6(Though not sure I fully understand why it's necessary). My A record has been added for several weeks now, so it's not a propagation issue and my AAAA record was added a few days ago with a SOA of 10 minutes, so do not believe it to be a propagation issue either.
I have opened this question because I'm not even sure how to google this any further as everything returned back is typically client side(Clear your cache/cookies) and not what my issue is.
My VPS is hosted by Linode.
Thanks in advance for any advice/help.
Related
When I just start the pfSense, both Netflix and Prime works fine, I can login and watch contents, but after one day or so of my pfSense being online, I just can't login to those video streaming services anymore.
For Netflix I get the "NW-2-5" error and for Prime I receive a message saying there are connectivity issues. Then I have to reboot my pfSense and after that everything is working fine for, again, one day or so.
My guess is this has nothing to do with the firewall rules, as it works for one day or so, but just in case I took a screenshot of it, in the Block separator I isolated my other VLANs (Home, VPN BR and Guest):
I'm still learning about how to configure my pfSense correctly and I hope this is just a silly configuration mistake.
Any suggestion about what I should change or check in the configuration?
Chromebooks at a certain facility will not work with static IPs, and they have reserved IP addresses, but for some odd reason they will not grab those from the DCHP server. By toggling Configure IP address automatically off for a few seconds and back on, the Chromebook gets its reserved IP and works fine. In about 6-8 months we will be changing the entire network and resolving this issue, but in the meantime if I could create a shortcut method for the end users to be able to do this easily it would be a big stone out of my shoe...
I had forgotten I posted this. In order to resolve the issue, I did use "code" and "programming" to create a script that would do what I described above. So, it wasn't a networking question, it was a programming question.
I get a 400 Bad Request error when trying to load medium.com. This only happens on my home network (if I take my laptop outside my network on turn off wifi on my phone, the site loads). I have cleared my cache, cookies, and browsing history on every device, restarted every device, and restarted my modem, to no avail. I searched this site for answers, but all the questions asked seem to be related to development, and at the moment, I'm just trying to load a page. How can I fix this? Thanks!
My website's bandwidth usage has increased hugely in the last few months, the odd thing is, it's from my own IP address. I've had 16,000 hits in one month from my own IP address. I have no idea why.
Is it possible to monitor why this is happening?
For additional info, it's a new wordpress site with good security measures, including server side.
Are there any simple reasons this could be happening that I can monitor?
You can install the following two plugins:
All In One WP Security
WP Cerber
A bit of a weird situation that I haven't come across. Note: it's not really a problem and I'm just really asking this out of interest.
My friend switched to a new ISP (same ISP as me, he lives one city over) and they just installed the new router today. He asked for my IP to join my teamspeak server which is temporarily being hosted on my local machine. He's joined it before many times without issue. He said it's not working today.
I told him to ping me, no response. I pinged him, also no response. At this point I was confused since I had never come across this situation before (maybe it's common, I'm no networking expert though). I ran a tracert and told him to do the same, mine reached a domain which was prefixed with his city name and his reached a domain prefixed with my city name, both timed out before actually reaching the destination IP.
At this point we decided to just use Discord instead and assumed this problem would resolve itself, I tried one last thing. I ssh'd into my work development server located in London and did a trace to both IPs. My IP traced fine and his IP timed out.
All I can think of is that routing tables for his new router aren't properly set up yet, my knowledge on networking doesn't really extend beyond this! I'm really just interested in what's going on here and would love an answer from a networking expert!
ICMP protocol might be disabled or blocked at any hop along the way, which would disrupt tracert.
Given that you tried pinging from two different endpoints to his PC could indicate that the ICMP blocking is happening somewhere closer to his endpoint.
With regards to the teamspeak connection, his new router might not be configured to allow the appropriate ports through. All home routers have different ways of configuring port-forwarding, but I'd check documentation there.