ZyXEL P660R-D1 - Netbios Filter
Netbios is used for windows shares, by default the router will block this.
To disable the filter (allow netbios) sys filter netbios config 0 off
To enable sys filter netbios config 0 on
To display: sys filter netbios disp
To test from linux: smbclient -L host Will either fail/timeout or ask for a password...