Out of Band (OOB) can be used in a case of an incident where CSIM
router or fireall is unresponsive and need a reboot (like the incident
of November 11th, 2023). It allows to by-pass the router and the
firewall and still gain access to CSIM network.
1) Connect to AIT VPN
Download AIT VPN configuration from https://helpdesk.ait.ac.th/wp-content/uploads/sites/2/downloads/AIT_Net_vpn_ait_ac_th.ovpn
Connect to AIT VPN with a command like (for Ubuntu):
sudo openvpn --config AIT_Net_vpn_ait_ac_th.ovpn
NOTE: You *must* use your *AIT* credentials to connect.
More information about AIT VPN at https://helpdesk.ait.ac.th/services/ait-vpn/
2) Connect to OOB device
ssh -i <key_file> -p 2222 on@oob-ait.cs.ait.ac.th
NOTE: You *must* authenticate with a key_file.
NOTE: you *must* use port 2222.
If you need more than a console access, for example if you need to
access to the GUI of the firewall:
sudo ssh -i <key_file> -p 2222 -L 443:firewall:443 on@oob-ait.cs.ait.ac.th
VMware GUI/vmplayer needs port 443.
Proxmox GUI needs port 8006.
I don't *think* you can use CSIM VPN at this stage.