AirLive WT-2000R - Manual (Page 38)

(192.168.1.100-192.168.1.149) They are allowed to send mail (port 25), receive mail (port 110), and browse
Internet (port 80); port 53 (DNS) is necessary to resolve the domain name.
(192.168.1.10-192.168.1.20) They can do everything (block nothing)
Others are all blocked.
AirLive WT-200R User’s Manual 38