A Technical Journey » Ports http://www.technicaljourney.com www.technicaljourney.com - Web Blog Of Paul McSharry, Technical Consultant & Trainer. Thu, 12 Aug 2010 12:02:36 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 Sync Windows Server To Centralised Time Sources http://www.technicaljourney.com/2010/02/sync-windows-ntp/ http://www.technicaljourney.com/2010/02/sync-windows-ntp/#comments Tue, 02 Feb 2010 10:33:59 +0000 Paul McSharry http://www.technicaljourney.com/?p=60 It is a common requirement for all servers in a solution, to have the same system time.  This can be achieved using NTP service.

To synchronise a client machine with a time source or list of time sources (10.10.10.1, 10.10.10.2, 10.10.10.3),

go to command line

w32tm /configure /manualpeerlist: “10.10.10.1,0×1, 10.10.10.2,ox1 ,10.10.10.3,0×1 ” /update

net stop w32time

net start w32time

To check time between source

w32tm /stripchart /computer:10.10.10.1

Note:  UDP port 123 for NTP is required.

]]> http://www.technicaljourney.com/2010/02/sync-windows-ntp/feed/ 0 Ports Required For Active Directory Services http://www.technicaljourney.com/2009/11/ports-required-for-active-directory-services/ http://www.technicaljourney.com/2009/11/ports-required-for-active-directory-services/#comments Thu, 05 Nov 2009 17:32:15 +0000 Paul McSharry http://www.technicaljourney.com/?p=17 Depending on the network infrastructure, communication between domain controllers may pass through various routers or firewalls.

The following ports are required for Active Directory Services.

Port Protocol Function
53 UDP/TCP DNS
445 UCP/TCP File Replication Service
88 UDP Kerberos authentication
135 UDP/TCP DC to Client and DC to DC communication
139 TCP DC File Replication Service
138 UDP DC File Replication Service
389 UDP LDAP
464 UDP/TCP Kerberos Password Change
3268 TCP Global Catalog
3269 TCP Global Catalog
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