Browse the modern web on Windows XP and Server 2003
XP and 2003 are EOL. Chrome and Firefox will not run. Supermium will.
Legacy Windows
Netcat equivalent on Windows: Test-NetConnection
Windows has no nc. Test-NetConnection -Port is the port check.
SSH into Windows Server 2003 with Bitvise
2003 has no SSH. Windows OpenSSH does not apply. Bitvise does.
WinDirStat: see what is eating the disk on Windows
du gives numbers. WinDirStat gives the map: which folder and which extension own the disk.