i have a DMZ with a www server and a ftp server - i cant ping between the two. if i issue a ping i get one reply then 3 failures - if i wait about three minutes i can issue the ping again get one reply the the rest fail. i can ping the switch from the servers and i can ping from the switch to the servers. i have also tried to browse from one server to the other by \\10.10.5.x\c$ and i get "no network provider accepted the given network path".
i can access the inside network and outside network no problem. i have connected the two servers via a crossover and the ping worked great.