1. SSHFS
For sshfs (ssh mount), if you do not specify any mount option, when the network connection is lost (e.g., due to VPN disconnection, server down, etc.), if you access the filesystem, you will have a hard hang, not interruptible by Ctrl+C or Ctrl+Z. The solution is to add sshfs option:
"-o reconnect,ServerAliveInterval=2,ConnectTimeout=3,ConnectionAttempts=1"
