I am running SBS2003 Premium Edition. I am using Sonicwall TZ205. My remote office is connected through Global VPN Client. Remote user disconnect several times during the day. Sonicwall MTU is set for 1400 MTU, but when I ping private and public address, I can only ping up to 500 MTU, if I ping above 500 I get request timed out. How can I fix this issue.