Sean is interested in locking down his network completely. Leo says that routers with Unified Threat Management are the best. Sophos is a good one. In fact, Sophos firmware can be installed into many routers that support open source.
Also, he saw that a local host was located in Vietnam. Leo says that Local Host usually means his own system and it has its own address. Local should originate in his own network. One possibility is a server may be connected to a server in Vietnam via Telnet, and that would imply that his network is compromised. Probably through Port 23. From the chatroom, the country of Vietnam resolves to a local host. It could be a spoofed DNS.