Security Basics mailing list archives
Re: unknown IP delivering DHCP
From: Don Thomas <don.thomasjacob () gmail com>
Date: Mon, 16 Apr 2012 19:17:23 +0530
I am not an expert in this, but will something like this work: http://www.manageengine.com/products/oputils/switch-port-mapper.html#switch-port-mapper There is a 15 day trial for this tool and so you do not have to purchase the product. - Don On Fri, Apr 13, 2012 at 3:18 PM, Dirty Mortain <dirtymortain () gmail com> wrote:
Hello. In my LAN I'm using the network 192.0.0.0/24 with a DHCP (192.0.0.14) delivering for the entire LAN through 3 smart switches. Yesterday I found a machine which have received 192.168.2.3 as DNS server by the DHCP, in 192.0.0.14 there is no configuration pointing to this so I tried to find that machine. It looks like a Linux 2.4 box which had 80 open with HTTP authentication (default admin/admin but changed) and DHCP open which only delivers DNS (overwrites 192.0.0.14, it always reply after it). Since switches are "smart" (not that smart indeed) I have no configuration interface where I could create a VLAN and/or block that MAC. Because it is a broadcast I cannot block it on the firewall (since it doesn't pass through it) what can I do to both know which machine is it (a smart and humanized machine) and block it? Thanks. ------------------------------------------------------------------------ Securing Apache Web Server with thawte Digital Certificate In this guide we examine the importance of Apache-SSL and who needs an SSL certificate. We look at how SSL works, how it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, install and use a thawte Digital Certificate on your Apache web server. Throughout, best practices for set-up are highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates. http://www.dinclinx.com/Redirect.aspx?36;4175;25;1371;0;5;946;e13b6be442f727d1 ------------------------------------------------------------------------
------------------------------------------------------------------------ Securing Apache Web Server with thawte Digital Certificate In this guide we examine the importance of Apache-SSL and who needs an SSL certificate. We look at how SSL works, how it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, install and use a thawte Digital Certificate on your Apache web server. Throughout, best practices for set-up are highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates. http://www.dinclinx.com/Redirect.aspx?36;4175;25;1371;0;5;946;e13b6be442f727d1 ------------------------------------------------------------------------
Current thread:
- unknown IP delivering DHCP Dirty Mortain (Apr 15)
- Re: unknown IP delivering DHCP Kurt Buff (Apr 15)
- Re: unknown IP delivering DHCP Ansgar Wiechers (Apr 16)
- Re: unknown IP delivering DHCP Dirty Mortain (Apr 16)
- Re: unknown IP delivering DHCP Jason Hellenthal (Apr 16)
- Re: unknown IP delivering DHCP Don Thomas (Apr 16)
- Message not available
- Re: unknown IP delivering DHCP Dirty Mortain (Apr 16)