Hi everyone, We have voice and video for MSN messenger working within our network. We use firewall clients that allow this to happen. We had to outsource this expertise, but are glad we now have it. We have noticed a rule has been set within ISA to use the 65k dynamic ports to pass this voice or video traffic, which can compromise security. Now obviously the ISA "expert" thinks it is required, but wanted to ask a wider audience. Do we need to have this within our protocol rules and IP packet Filters to get these two services working within MSN messenger or could we do without them? Sachin