下面这个是端口列表以供参考:
•SMTP: 25
•LDAP (DC lookup): 389
•LDAP (GC lookup): 3268
•NetBIOS (ports): 135, 139, 1024+ (default config is usually 6000 something).
•DNS: 53
•RPC: 111, 135, 1024+
•Netlogon: 445
•Kerberos: 88
•OWA: 80 (HTTP), 443 (HTTPS)
•IMAP4: 143, 993 (with SSL) SSL
•POP3:110 995 (with SSL)