Authentcation Failures against ACS Server

ditscap — Fri, 21 Feb 2020 18:09:37 GMT

My "Failed Attempts" log shows strange activities, namely the following:

Authen Failed/Reason Unknown

Username:

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Username:

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Username:

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And on and on and on... This happens several times.

All my successful Authentications from my dial up server come on Nas port numbers such as Async35, Async34, etc...

Successful ACS authentication when I access network devices use Nas Ports 510, 480, 479, etc..

These faile attempts are from Nas Port tty33.

Does it appear someone may be trying a buffer overflow? What is tty33?

Thanks

Re: Authentcation Failures against ACS Server

ditscap — Mon, 08 Mar 2004 18:46:48 GMT

Any ideas?

topic Authentcation Failures against ACS Server in Network Access Control

Authentcation Failures against ACS Server

Re: Authentcation Failures against ACS Server