This is complicated so I will start from the beginning.
I have a server at a co-lo and a router at home that connects my server at home to the server at the co-lo. I have a REXX backup routine that backs up the server from the co-lo to the home server.
All servers are Windows 2003 and all laptops are XP.
At home, the cable router is connected to the router that connects me to the co-lo, then that is connected to a linksys wireless router that gives me access to the internet on all our home laptops.
When that home server is on and connected, all the laptops (including the home server) gets very low bandwidth. I took the home server and connected it directly to the cable router and got the same results so I know it's the home server having the problem - not the routers. I also connected one of the laptops to the cable router and it got very good results.
I also know that I have run every type of anti-virus checking on the server that I know of including Spybot and housecall.trendmicro and it finds nothing.
This drop in bandwidth all started about last Thursday.
My question is: what is left to check besides someone has accessed my home server and is using the bandwidth when it is on? How can I tell? Or can something have gone wrong with the server? It is older.
I can't get backups now until this is resolved, which makes doing business very difficult.