On Tue, Feb 4, 2014 at 6:33 AM, <info at itnserver.com> wrote: > Hello > some of the web site could not loading > Or slowly loading > But the download and upload speed is good > There is only problem in opening web pages > I realized the problem DTLS > I closed DTLS > connecting With TLS > page load problem was solved That could be an MTU issue. The best way to debug it is to use wireshark on both ends and check whether there are icmp messages received that are ignored or discarded by some firewall. If this is not possible, I'd suggest to manually play with the mtu option either on the server or the client. regards, Nikos