Login attacks
Nathaniel Hall
halln at otc.edu
Tue Dec 7 22:52:58 UTC 2004
I see attempts about every other day. Because of this, I send e-mails
to ISPs about every other day. After the third offense from within the
same range, I block all access to our servers from that range, unless
the ISP attempts to correct the problem.
I also keep track of all attempts so that I can reference it later in
case of a break in.
Nathaniel Hall, GSEC
Intrusion Detection and Firewall Technician
Ozarks Technical Community College -- Office of Computer Networking
halln at otc.edu
417-447-7535
Gerry Doris wrote:
>On Tue, 2004-12-07 at 15:24, Michael Yep wrote:
>
>
>>Hello
>>
>>In my LogWatch report I get many login attacks, many from the same IP address.
>>
>>sshd:
>> Authentication Failures:
>> root (218.232.109.187): 59 Time(s)
>> adm (218.232.109.187): 2 Time(s)
>> apache (218.232.109.187): 1 Time(s)
>> nobody (218.232.109.187): 1 Time(s)
>> operator (218.232.109.187): 1 Time(s)
>> Invalid Users:
>> Unknown Account: 43 Time(s)
>>
>>I have permitRootLogin set to NO, and I use strong passwords, but can I
>>just add these IP addresses to hosts.deny?
>>and if so how would I set that up
>>
>>
>>
>>Michael Yep
>>Development / Technical Operations
>>RemoteLink, Inc.
>>
>>
>
>I had so many problems with the 218.0.0.0/24 domain that I totally
>blocked the entire domain. I believe this domain is in Korea.
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listman.redhat.com/archives/fedora-list/attachments/20041207/06ee687a/attachment-0001.htm>
More information about the fedora-list
mailing list