- The Zyxel Zywall is a rebranded SSH Sentinel box. See also our section on SSH?.
- There seems to be a problem with keeping this connection alive. This is caused at the Zyxel end. See this brief discussion and solution.
Zyxel's Zywall to Openswan instructions (PSK)
Zyxel's Prestige to Openswan instructions (PSK). Note: not all Prestige versions include VPN software.
Fabrice Cahen's HOWTO (PSK)