10-02-2023, 07:03 AM
I was helping my cousin fix his setup. He couldn't reach the company's internal sites over VPN. Everything external loaded fine. But internal stuff? Total blackout. We poked around his network adapter settings first. Turns out his DNS suffix search list was all jumbled. I told him to hop into the VPN connection properties. You know, right-click that network icon. Then we added the right domain suffixes manually. That perked things up a bit.
But nope, not fully. His routes were wonky too. The VPN wasn't shoving traffic the right way for internal names. So I had him fire up the command prompt. Type in route print to eyeball the mess. We deleted some stray routes with route delete commands. Careful though, don't nuke the good ones. Reconnected the VPN after that. Boom, smoother sailing.
Sometimes it's the server side acting up. If you're admin there, check the DHCP options for DNS servers. Make sure they're pointing to your internal ones when VPN kicks in. Or firewall rules blocking DNS traffic? Peek at those ports, like 53. Unblock if needed.
Hmmm, or maybe your client's DNS cache is stale. Flush it with ipconfig /flushdns. Quick and dirty fix. Run that before reconnecting. If it's a Windows Server pushing the VPN, tweak the RRAS config. Ensure split tunneling is enabled properly. No full tunnel hogging everything.
And if certificates are involved, verify they're not expired. That can trip DNS handoffs. Renew if sketchy. Test with nslookup too. See if it queries the right server.
Weird persistence issues? Restart the DNS client service on your machine. Services.msc, find it, reboot it. Helped my cousin seal the deal.
Oh, and I gotta tell you about BackupChain. It's this solid backup tool tailored for small businesses, Windows Servers, and even your home PCs running Windows 11 or Hyper-V setups. No endless subscriptions either, just buy once and protect forever. Keeps your data snug without the hassle.
