Here is a listing of the port requirements for Active Directory domain, as well as optional ports:
|
Required Ports |
||||
|
Port No. |
Protocol |
Used by |
Required for |
|
|
1024-5000 |
TCP/UDP |
RPC (dynamic response ports) |
required for RPC to respond to communications |
|
|
135 |
TCP |
RPC (endpoint mapper) |
required to open the endpoint mapper to the destination for RPC communications |
|
|
389 |
TCP/UDP |
LDAP |
required to bind to a DC |
|
|
3268 |
TCP |
LDAP GC |
required to bind to the GC function of a domain controller (extremely important for Exchange) |
|
|
53 |
TCP/UDP |
DNS |
required for name resolution and Active Directory functionality as a whole |
|
|
88 |
TCP/UDP |
Kerberos |
self explanatory |
|
|
445 |
TCP |
SMB |
self explanatory |
|
|
123 |
UDP |
SNTP |
required for time synchronization with a time source |
|
|
|
|
ICMP |
required for group policy detection, application, and MTU size detection, as well as other low level activities |
|
|
|
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|
Optional Ports |
||||
|
Port No. |
Protocol |
Used by |
Required for |
|
|
636 |
TCP |
LDAP SSL |
required to bind to a DC using LDAP over SSL |
|
|
3269 |
TCP |
LDAP GC SSL |
required to bind to a GC using LDAP over SSL |
|
|
137 |
UDP |
NetBIOS name |
self explanatory |
|
|
138 |
UDP |
NetBIOS Netlogon and Browsing |
self explanatory |
|
|
139 |
TCP |
NetBIOS session |
self explanatory |
|
|
42 |
TCP |
WINS replication |
self explanatory |
|
|
1723 |
TCP |
PPTP |
required if using PPTP VPN tunnel |
|
PortQryUI is a very good to check the ports.
To download portqry:
Description of the Portqry.exe command-line utility
http://support.microsoft.com/default.aspx?scid=kb;en-us;310099
For more information on port requirements, please see:
http://support.microsoft.com/support/kb/articles/q179/4/42.asp
For Exchange considerations:
http://support.microsoft.com/?kbid=259240
http://support.microsoft.com/default.aspx?scid=kb;en-us;280132
For SQL considerations:
http://support.microsoft.com/kb/q287932/
For SMS considerations:
http://support.microsoft.com/default.aspx?scid=kb;en-us;200898
http://support.microsoft.com/kb/q167128/
Don’t forget to leave your comments 🙂
Thanks,
Aresh
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