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DNS Error

By ZDD ·
I have just started getting these error on my domain Controller, any idea as to what would cause them? I do not recognize the IP address. Is someone trying to hack us?

DNS Server encountered invalid domain name in packet from 151.198.210.2. Packet is rejected.

Thanks for any help.

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DNS Error

by dlongan In reply to DNS Error

Use tracert to identify the offending ip address if possible. Have you made any changes to the DNS server with respect to secondary dns servers. It's possible that you could be under attack, or just that some one mis-configured their DNS and is now pointing towards yours. How frequent are the entries in the log file?
I hope you have your PDC behind a firewall!

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