04-07-2010 12:19 AM - edited 03-04-2019 08:03 AM
Hi All, i am facing a big problem that are continuing attack from the outside into my network. we identified that public ip but cant recognises it. so please help me out how i can prevent this attacking. i appreciate you comments
04-07-2010 12:34 AM
A bit more information would be useful! That's like saying "my car isn't working... how do I fix it?"
Chris
04-07-2010 12:56 AM
Go to this website and enter the IP Address (http://whois.domaintools.com). Now you know where it came from.
04-07-2010 01:07 AM
Hi,
Thank you for your quick reply but the thing like that i want to block
this particular ip attack into my firewall so that it never happen again.
can i do ?
On Wed, Apr 7, 2010 at 1:26 PM, leolaohoo <
04-07-2010 01:28 AM
What is your firewall??? More info please.
04-07-2010 01:32 AM
Hi,
i have cisco ASA 5510. i would like to stop attacking from this
particular IP how i can do it .
please help me.
On Wed, Apr 7, 2010 at 1:59 PM, leolaohoo <
04-07-2010 03:19 AM
Arup
access-list outside_in deny ip host
access-group outside_in in interface outside
Couple of things -
1) you may already have an access-list on your outside interface so just add the first line above to the access-list
2) Ideally if you manage the border router ie. the router beyond your firewall that connects to your ISP you would want to apply the acl there.
Jon
04-07-2010 05:52 AM
Hi,
blocking one particular ip on your FW or router will not make the attack never happen again.
If this is a real hacker attack, the hacker might be using some botnet. So there's no problem to use another "slave" PC and continue with the attack from a different source IP address.
Blocking one IP address would bring you only a short time.
What you need is analysing what kind of attack is used. And deploying some IPS blocking this kind of attack from any source address dynamically.
BR,
Milan
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