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Unix / Linux

Fail2ban

sudo fail2ban-client start

Status

  • Status of fail2ban service: sudo systemctl status fail2ban
  • Status of fail2ban: sudo fail2ban-client status sshd

Banned IP addresses

To manually ban an IP address:

sudo fail2ban-client -vvv set JAIL banip IPADDR

where:

  • JAIL is the name of the jail to use (get list with sudo fail2ban-client status)

  • IPADDR is the IP address to ban

  • List banned IP addressed: sudo zgrep 'Ban' /var/log/fail2ban.log* or sudo fail2ban-client banned

  • Get banned IP with time: sudo fail2ban-client get sshd banip --with-time

Mega

To synchronize directories with Mega.io, there are several options :

  1. Megasync aka Mega Desktop app. This is a GUI. The issue is that the app loses the sync of the directories you want to sync between reboots, so you have to waste time syncing at each run.
  2. MegaCMD or apt install megacmd which is a bunch of CLI commands. The sync is saved between reboots in ~/.megaCmd
  • To login: login email
  • To add a new directory to sync: mega-sync localdir remotemegadir
  • View current status: mega-sync. Sync means it's scanning directories. Pending means transfers are potentially happening.

Run states: Running, Pause, Stopped Status: Pending, Syncing

  • If you need to rescan: mega-sync rescan PATH
  • To remove a sync: mega-sync remove ID
  • View current transfers: mega-transfers
  • Switch debug level: mega-log -sc info sets command and SDK level to info