Required posts for opening a firewall between two forests

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Hello experts

I need to know one thing. What ports are required for opening a firewall between two forests for user communication? Please help.

Thanks a lot.

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Answered By 0 points N/A #98825

Required posts for opening a firewall between two forests

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Hello,

Please find below, the steps to be followed to open a port manually:

  1. Click on Start and go to My Network Places.
  2. Select View Network connections listed under Network Tasks.
  3. Browse for the internet connection you are using, right click on it and select properties.
  4. Go to the Advanced Tab and select settings.
  5. Now, click on Add to open a new port.
  6. Type a friendly name in the Description box. For e.g., enter File Sharing as Port 445.
  7. Enter the IP address 127.0.0.1 in the text box labeled Name or IP address of the computer hosting this service on your network.
  8. Enter the same port number as step 6 for both Internal and External ports as usual, this number is kept as same.
  9. Click on TCP or UDP and click on OK.

Follow the above mentioned steps in sequence to open new ports manually.

Here is a list of ports which are used in case you are using Windows NT:

Client Port(s)

Server Port

Service

137/UDP

137/UDP

NetBIOS Name

138/UDP

138/UDP

NetBIOSNetlogon and Browsing

1024-65535/TCP

139/TCP

NetBIOS Session

1024-65535/TCP

42/TCP

WINS Replication

In case of Windows 2000 and 2003 server:

Client Port(s) Server Port Service
1024-65535/TCP 135/TCP RPC
1024-65535/TCP 1024-65535/TCP LSA RPC Services (*)
1024-65535/TCP/UDP 389/TCP/UDP LDAP
1024-65535/TCP 636/TCP LDAP SSL
1024-65535/TCP 3268/TCP LDAP GC
1024-65535/TCP 3269/TCP LDAP GC SSL
53,1024-65535/TCP/UDP 53/TCP/UDP DNS
1024-65535/TCP/UDP 88/TCP/UDP Kerberos
1024-65535/TCP 445/TCP SMB

Hope that this data helps you.

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