What I wanted is to forward all DHCP request to a dedicated Fastethernet port where my DHCP server resides. I am trying to prevent illegitimate DHCP server that is accidentally being fire up from answering the request from clients in my network.
The ip helper only helps forward DHCP broadcast but any server in the network can answer the broadcast.
Do you have a problem w/ security? Sounds like this is what needs to be addressed.
You may want to run port scans to check for active bootp responses from invalid/malicious DHCP servers. If the results show hits from bad servers...
Write a script... Send to pager... viola... Escort user out the door....
As far as I know you can't secure DHCP... OK.. what if you could lock down the responses to only a valid dhcp server, I come along a start spoofing my client's MAC address and request an IP.... I don't stop there I change my MAC address again... In fact I don't stop until your server has exhausted its entire DHCP pool.
Question We run asr9001 with XR 6.1.3, and we have a very long delay to
login w/ SSH 1 or 2 to the device compare to IOS device. After
investigation, the there is 1s delay between the client KEXDH_INIT and
the server (XR) KEXDH_REPLY. After debug ssh serv...
Introduction The purpose of this document is to demonstrate the Open
Shortest Path First (OSPF) behavior when the V-bit (Virtual-link bit) is
present in a non-backbone area. The V-bit is signaled in Type-1 LSA only
if the router is the endpoint of one or ...
Hi, I am seeing quite a few issues with patch install and wanted to
share my experience and workaround to this. Login to admin via CLI, then
access root with the “shell” command Issue “df –h” and you’ll probably
see the following directory full or nearly ...