Traffic on the following ports are permitted to enter a machine in the Mostly Closed firewall category:

Protocol name	Purpose	Port range
FTP	File transfer	TCP 21
Mail (SMTP)	Email transfer, submission	TCP 25, TCP/UDP 587
HTTP	Web pages	TCP 80 and TCP 8080
POP3	Email transfer	TCP 110
IMAP	Email transfer	TCP 143
HTTPS	Secure web pages	TCP 443 and TCP 8443
LDAP		TCP 389
Secure POP, Secure IMAP	Secure email transfer	TCP/UDP 993 TCP/UDP 995

Note: Systems placed in the Mostly Closed + Remote Administration firewall group will permit the above ports plus:

Protocol name	Purpose	Port range
SLP	Service Location Protocol	TCP/UDP 427
SSL SMTP	Secure email transfer	TCP/UDP 465
NCP	Netware Core Protocol	TCP/UDP 524
PPTP	Point to point tunneling protocol	TCP 1723
NoRM	Netware remote management	TCP/UDP 8009

Ports denied with Mostly Open

Traffic on the following ports are not permitted to enter a machine in the Mostly Open firewall category:

Protocol name	Purpose	Port range
Mail (SMTP)	Email transfer	TCP 25
DNS	IP information	TCP/UDP 53
finger	User information	TCP 79
HTTP	Web pages	TCP 80
NNTP	News	TCP 119
SNMP	Network management	TCP/UDP 161-162
LDAP	Directory services	TCP 389
LPD	Printer	TCP/UDP 515
HTTPS	Secure web pages	TCP 443
traceroute	traceroute	UDP 33400-34000
ICMP	Network control	N/A
IRC	Internet chat	TCP 6660-6669