I am using SSL VPN for remote access along with OpenVPN clients (utilizing OpenVPN GUI). My settings are as follows:
- Using 443 (UDP)
- AES-128-CBC
- SHA2 256
- 2048 bit Key Size
- Compression Off
I am pushing my DNS servers (using OpenDNS) to the clients successfully; OpenDNS is also used internally and they are super fast on internal machines. I also tried using the built-in DNS server but had the same issue. When I go to a website that I've visited recently, the page loads instantly, however when I go to a page that I've never been to, it will initially load extremely slow (sometimes up to 20 seconds before page begins displaying). I also noticed that even a handful of pages that I've been to multiple times will even load slowly (Gmail, for example). Sometimes the pages won't load at all and I have to refresh and they will load the second time. This led me to believe it was a DNS issue, but wouldn't the DNS just not work at all?
I have no bandwidth throttling in place and the WAN link on the Sophos box is FTTH with 85/85 service. I looked at the logs for the Firewall and IPS (web filtering is disabled) and there's no messages for this traffic, everything looks normal.
Any help is greatly appreciated. Thanks guys!
This thread was automatically locked due to age.