|
Table A: Ports that Enable Remote Access to SBS
Services |
|
TCP Port |
Service |
Description |
|
21 |
FTP |
Enables external and internal file transfer |
|
25 |
Exchange Server |
Enables incoming and outgoing SMTP mail |
|
80 (http://) |
IIS |
Enables all nonsecure browser access, including:
internal access to IIS Webs including the company Web,
Windows SharePoint Web, Windows SharePoint
administration Web, and server monitoring and usage
reports Enables internal access to Exchange by OWA and
OMA clients |
|
110 |
POP3 |
Enables Exchange to accept incoming POP3 mail |
|
123 (UDP port) |
NTP |
Enables the system to synchronize time with an external
Network Time Protocol (NTP) server |
|
143 |
IMAP4 |
Enables Exchange to accept incoming IMAP4-compliant
messages |
|
220 |
IMAP3 |
Enables Exchange to accept incoming IMAP3-compliant
messages |
|
443 (https://) |
Outlook |
Enables all secure browser access, including external
access to Exchange for Outlook 2003, OWA, OMA and
ActivieSync clients; required for external access to
server monitoring and usage reports |
|
444 |
Windows Share Point Services |
Enables internal and external access to the SharePoint
Web |
|
500 |
IPSec |
Enables external VPN connections by using IPSec |
|
1701 |
L2TP clients |
Enables external L2TP VPN connections |
|
1723 |
PPTP clients |
Enables external PPTP VPN connections |
|
3389 |
Terminal Services |
Enables internal and external Terminal Services client
connections |
|
4125 (Note: you can change this port in RRAS) |
Remote Web Workplace |
Enables OWA access to Exchange
when you use RWW to connect to a server or workstation
inside your network. If you do not wish to use this
functionality it can be closed. |
|
4500 |
IPSec |
Internet Key Exchange (IKE) Network Address Translation
(NAT) traversal |
