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Firewall Port For Group Policy

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    Like to know is the port 445 a must to open (bi-directional) when want to join a member server to AD between firewall?
    Tuesday, October 18, 2016 5:18 AM
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    Hi,
    Yes, it is needed, and also, the following ports are needed:
    LDAP TCP-in - 389
    LDAP UDP in - 389
    LDAP for Global Catalog TCP in - 3268
    NetBIOS name Resolution UDP in - 138
    SAM/LSA TCP in - 445
    SAM/LSA UDP in - 445
    Secure LDAP TCP in -  636
    Secure LDAP for Global Catalog TCP in - 3269
    W32Time NTP UDP in - 123
    RPC - RPC Dynamic
    RPC Endpoint Mapper
    DNS - TCP and UDP 53
    Kerberos V5 UDP in - 88
    Netbios Datagram UDP in – 137
    Please see details from:
    Active Directory and Active Directory Domain Services Port Requirements
    https://technet.microsoft.com/en-us/library/dd772723(WS.10).aspx
    Best regards,
    Wendy

    Please remember to mark the replies as answers if they help and unmark them if they provide no help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Wednesday, October 19, 2016 1:55 AM
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  • Question
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    Hi,
    Yes, it is needed, and also, the following ports are needed:
    LDAP TCP-in - 389
    LDAP UDP in - 389
    LDAP for Global Catalog TCP in - 3268
    NetBIOS name Resolution UDP in - 138
    SAM/LSA TCP in - 445
    SAM/LSA UDP in - 445
    Secure LDAP TCP in -  636
    Secure LDAP for Global Catalog TCP in - 3269
    W32Time NTP UDP in - 123
    RPC - RPC Dynamic
    RPC Endpoint Mapper
    DNS - TCP and UDP 53
    Kerberos V5 UDP in - 88
    Netbios Datagram UDP in – 137
    Please see details from:
    Active Directory and Active Directory Domain Services Port Requirements
    https://technet.microsoft.com/en-us/library/dd772723(WS.10).aspx
    Best regards,
    Wendy

    Please remember to mark the replies as answers if they help and unmark them if they provide no help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Wednesday, October 19, 2016 1:55 AM
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    Moderator
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    Hi,

    I am checking how the issue going, if you still have any questions, please feel free to contact us.

    Appreciate for your feedback.

    Best regards,

    Wendy

    Please remember to mark the replies as answers if they help and unmark them if they provide no help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Monday, October 24, 2016 9:39 AM
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    Moderator