This might require you to then reinstall and reconfigure your VPN clients. I'd also consider resetting your winsock stack for good measure. I'd also try fully uninstalling and removing your firewall and AV software to see if that makes any difference to your connection reliability. I'd be tempted to uninstall the device and fully delete the driver infs from the machine, reboot then tether over USB and redownload the Microsoft issued drivers for the Ethernet chipset from Windows Update. I had major issues with recent releases of Intel ProSet drivers and, ironically, had to roll back to 2016/2017 WHQL drivers to eliminate them! Not beyond the realms of possibility that your NIC drivers or configuration is a big screwed up. That's interesting and denotes a possible issue with the PC, perhaps even the drivers you're using for your Ethernet adapter.

Same symptoms each time? I'd be interested to know what firewall and AV you're running on the PC, whether any VPN product works reliably at all (any of the OpenVPN, SSL or Torguard-protocol services), and what OS/network adapter/intermediate switch you have in your setup. I should mention that I also had this same problem with the standard plus net router too. Likewise with port 500 UDP, if there's nothing on your machine waiting to handle ingress traffic on 500 UDP, any inbound packets go straight to oblivion (the case whenever the IPSec VPN client is not running to respond to any IKE traffic).

There's more than one way for a miscreant to do host discovery there, nmap doesn't need ICMP echo. In fact on my other connection I explicitly requested the ISP enable WAN ICMP echo reply on their provided router as I use the feature for line monitoring. “ one discussion elsewhere suggests forwarding port UDP 500 for IPSec and enabling ICMP reply to WAN echos ('Respond to Ping on Internet Port') and you should locate and disable any Netgear firewall or traffic filtering”Īre there security implications with this? Haven’t forwarded any ports before so not sure what it actually does. Did you run the ping tests while VPNed, manually adjusting the packet size to see at what point they're fragmented?

Mtu f5 vpn client