I was reading someone elses post regarding MTU and although it didn't relate directly to me it got me thinking. I have a couple of servers at one location and a couple of remote sites using IPSEC tunnels to the site where the servers are. As I understand it the MTU setting in the router should be set (dependant on the service type) to 1500 in order to work optimally with both the Cable and DSL providers. My question is should I reset my servers and clients (mostly MS boxes) to 1492 to limit traffic and packet loss? I guess the larger question is... are the routers breaking the packets sent from the client/server into two in order to apply the IPSEC overhead? Thanks in advance.