Everytime I setup a Microsoft 2003 Small Business Server or troubleshoot connectivity problems to the SBS server I have to lookup the ports that are required to pass through a firewall for proper communication to occur with the various SBS components. Since I’m tired of Googling for them, I’ve decided to post them here for my quick reference. Hopefully others will find this helpful as well:
SBS firewall ports
SMTP - port 25 – email
http - port 80 – web server including wwwroot and server usage and performance reports
https – port 443 – secure web server. Includes OWA and OMA
Windows SharePoint Services intranet site – port 444 for allowing users to securely access the intranet Web site created by SharePoint Services from the Internet
PPTP - port 1723 – VPN connections
Remote Web Workplace (RWW) - ports 443 and 4125
Remote Desktop (RDP direct) – port 3389. If using RDP through RWW this is not required.
Other SBS ports
POP3 – port 110
IMAP – port 143
IMAPs – port 993
FTP – port 21
June 4, 2008 at 2:42 pm
If I remember correctly PPTP also requires IP protocol 47 (GRE)
February 11, 2009 at 2:42 pm
How do I open Port 1723 on sbs2003?
June 3, 2009 at 12:36 pm
Thank you! I definitely find it helpful, as I have the same issue: I setup SBS servers fairly often and find myself googling the ports each time. I’ll remember this page for future reference. (really though, you’d think we’d have ‘em memorized by now!
Eventually…