I'm running 2003 Server and have workstations set up to connect to a terminal services session in order to use software stored on the server. we use a program that connects an external entity with us to send documents electronically..both sides have proven to have connection yet we cannot ping each other's ip's...what could be the problem here? (possible firewall config)
Your firewall, or their firewall, could be configured to not accept ICMP (Internet Control Message Protocol ) requests, which is a certain type of network traffic (ping is a subset of that type of network traffic)
A lot of companies disable this type of traffic to prevent ping flooding, which could be used as a denial of service type of attack
Look at this post to see if you could use these techniques if you're trying to determine if a connection is alive w/o using ping .