Re: clients separated from DC by firewall

I agree

"Anthony" <anthony.spam@xxxxxxxxxxxxxx> wrote in message news:uQsWS4bqHHA.4836@xxxxxxxxxxxxxxxxxxxxxxx
Just a comment: by the time you open that lot up, I am not sure what the firewall is preventing any longer. You may as well allow all communication between specified hosts or LAN in my opinion.
Anthony
http://www.airdesk.co.uk


"S. Pidgorny <MVP>" <slavickp@xxxxxxxxx> wrote in message news:OaVgnHbqHHA.1208@xxxxxxxxxxxxxxxxxxxxxxx
What is missing:

* RPC endpoint mapper (135/TCP) + a fixable (http://support.microsoft.com/kb/224196/) port for login services
* LDAP to GC (3268/TCP)
* ICMP ping

Note that Kerberos is UDP by default and LDAP is using both TCP and UDP (UDP = LDAP ping); DNS also may use TCP. Protocols are important. SSL may change port requirements, too. See http://support.microsoft.com/kb/832017/

--
Svyatoslav Pidgorny, MS MVP - Security, MCSE
-= F1 is the key =-

* http://sl.mvps.org * http://msmvps.com/blogs/sp *

"Jay" <jay@xxxxxxxxxx> wrote in message news:uZO$1nUqHHA.4100@xxxxxxxxxxxxxxxxxxxxxxx
straightforward question - I have a range of PCs that are separated from their domain controller by a PIX. I need to know what ports are required for me to join these clients to the domain.

the doc 'Active Directory in Networks Segmented by Firewalls' leads me to believe I need:

445 (DS)
88 (Kerberos)
389 (LDAP)
53 (DNS)

assume both TCP and UDP for the above. The problem is I am getting and RPC error and I see 135 being dropped by my PIX. What are the ports needed to join a computer to a domain?

Is there a 'right' way to do this?

Thanks
Blake





.

Relevant Pages

  • Re: Easy RRAS VPN question
    ... When NAT-T is used port 1701 UDP ... to go through a firewall directly then port 1701 UDP needs to be open. ... >> accessed from the internet. ...
    (microsoft.public.windows.server.networking)
  • Re: Open port PIX 501
    ... :i can't open the port in my PIX. ... :I need open the port 1000 to point to the IP 10.254.254.222. ... in practice only DNS servers doing zone transfers need tcp. ... of UDP, it would be a highly unusual client which did not stick ...
    (comp.dcom.sys.cisco)
  • RE: DNS Records
    ... tcp>1023 53 Client queries with long replies ... On other client types, ... if you lock down all but port ... a client queries an initial server from an unreserved port number to UDP ...
    (Security-Basics)
  • Windows Update Scrammed My Server
    ... The Simple TCP/IP Services could not find the TCP Echo port. ... The Simple TCP/IP Services could not find the UDP Echo port. ...
    (microsoft.public.windowsupdate)
  • Re: Settings for Mercenaries and MS MN500 Wireless Router
    ... When you type "27960-27960 tcp and udp" exactly where are those entries ... Enable Description Outbound Port Trigger Type Inbound Port Public Type ... > inside the game. ...
    (microsoft.public.games)