I use a TP Link Archer C20 Wirelss Dual Band Router to connect to fiber broadband service.
For my office work, I connect to a VPN network, which works fine for sometime. And after a while, the VPN breaks the internet connection. None of the router clients are able to connect. The router is back up only when I reboot it.
After a little digging, I noticed that even my DOS protection is turned off, with all the attack filtering options disabled.
What might be causing the sudden drop in internet connection? I'm on a Ubuntu machine with Cisco Anyconnect Secure Mobility VPN Client.