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LLMNR and NetBIOS over TCP/IP (NBT-NS) and DP

Gulnaz Amirova 9 months ago

Dear All,

Our security dep plans some actions when they will have to switch off broadcast protocols LLMNR и NetBIOS over TCP/IP (NBT-NS).

May it affect DP activity in any way?

As far as I understand these protocols use ports below

LLMNR – 5355

NetBIOS – 137 (Name Service), 138 (Datagram Service), 139 (Session Service).

not sure about broadcasting though.

DP normally uses different ports but I'm not sure if it may still affect DP stable work. Please advise

thank you!

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Sandro Petruzziello 9 months ago +1 suggested

Hi, thanks for using our forums. Data Protector relies heavily on name resolution. With that said, LLMNR disabled will only become an issue, if the hostname query fails in the DNS server. With…

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0 Sandro Petruzziello 9 months ago

Hi, thanks for using our forums.

Data Protector relies heavily on name resolution.

With that said, LLMNR disabled will only become an issue, if the hostname query fails in the DNS server.

With a reliable DNS server updated with "A" records and "Pointer" records the impact to DP shouldn't be pronounced, although I haven't tested it personally.

You are always at the liberty to test it in a lab environment first to confirm.

Thanks

Kind Rg
Sandro
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0 Gulnaz Amirova 9 months ago in reply to Sandro Petruzziello

Thank you so much Sandro, got it
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0 Sandro Petruzziello 9 months ago in reply to Gulnaz Amirova

Pleasure was mine!
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