Posts Tagged ‘dhcp’
August 2nd, 2009 | 
Author: Deploying server 2008 and Windows 7 using Windows Deployment Services.
Windows Server 2008 comes equipped with a service to automate the installation of Operating systems using a DHCP PXE boot.
The example will Use server2008 as the Windows Deployment Server.
The Serverwill have a DHCP server installed and a DHCP scope of
10.10.10.1 - 20.
The IP address of the WDS is
10.10.10.100
The server is part of the domain failover.lab
Configure your DHCP server with a scope of your choice.
Install Windows Deployment Services Role.
Read the rest of this entry »
Tags: router, interface, switch, cisco, vlan, wan
Security on a switch
eMac address flooding or overflow attacks
Switches learn a source MAC address from the MAC address table
If a frame enters a switch and it does not find the destination MAC address in the table, the switch acts like a hub and floods it out all ports. Mac address tables have a limited size.
MAC address flooding uses this limitation to bombard the switch with fake addresses until the table is full. The switch then enters fail-open mode and will act like a hub.
As a result, an attacker can see all of the frames passing through the switch.