Many times, we face this statement. And almost all time we forget simple tool like ping, telnet and tracert. When I get into the situation where we couldn’t connect client to server, the first thing that I do is can I ping server? If ping is failing at what level of network route it is failing- tracert? Can I open the port (using telnet) that client software is trying to connect to the server.

Many of the time this becomes question when we do have network (can ping, and hence can also tracert). But cannot open port. And usually it is because of firewall.

More to come…