Prestige 480 Dual BRI ISDN Router
Dial-In Server Configuration 8-19
Services Port Number
FTP (File Transfer Protocol) 21
Telnet 23
SMTP (Simple Mail Transfer Protocol) 25
DNS(Domain Name System) 53
HTTP (Hyper Text Transfer protocol or WWW, Web) 80
PPTP (Point-to-Point Tunneling Protocol) 1723
