Networking tutorials
Configuring DHCP to work with Cisco Manager
Contributed by kel on November 3, 2006 under Cisco call managerThis Tech-Recipe describes using an external DHCP server, in this case from a Windows Server 2000 or 2003 system, with Cisco Call Manager (CCM). When introducing CCM into environments with an exsiting DHCP infrastructure, problems may occur because Cisco IP phones require additional information from the DHCP server when they startup. Following the steps in this Tech-Recipe will allow the use of a non-CCM DHCP server.
CommentsCisco: Making long commands short with aliases
Contributed by AWfki on October 11, 2006 under Cisco networkingHow to configure aliases for frequently used commands.
CommentsDisable or turn off CDP on Cisco switches
Contributed by CISSP06 on August 12, 2006 under Cisco switchCisco Discover Protocol or CDP is a Cisco-proprietary protocol that runs on all Cisco products. CDP allows devices to learn about neighboring devices (the ones attached directly to the switch) including information about their platform, IP address, the version of IOS or other OS, VLAN membership, etc. This can be helpful information when troubleshooting network issues, it can also provide an attacker valuable information about the layout of your network. Other vulnerabilities include a denial of service attack in which CDP packets are generated, flooding the network. If you want to know how to turn off CDP, read on.
CommentsCisco 2950 Switch: Create a VLAN
Contributed by CISSP06 on July 28, 2006 under Cisco switchThe commands for creating a VLAN vary from one switch model to another. VLANs in a 2950 switch are configured in a manner similar to configuring an interface. This configuration is substantially different than a 2900 switch.
CommentsCisco 2900 Switch: Create a VLAN
Contributed by CISSP06 on under Cisco switchA VLAN (Virtual Local Area Network) makes a single physical switch behave like several separate switches. A host connected to one VLAN cannot communicate through the switch to a host connected to another (although a router can permit communication between VLANs if desired). Here’s how to configure a new VLAN on a 2900 switch.
CommentsCisco Switch 2900/2950: Display VLAN information
Contributed by CISSP06 on under Cisco switchKnowing the commands to display configuration information about Virtual LANs (VLANs) is as important as knowing the commands to configure them. The commands here display information about all VLANs or a single VLAN by number or name.
CommentsHow to use Microsoft IAS with Cisco VPN concentrator/ASA/PIX
Contributed by CCIE14019 on July 2, 2006 under Cisco networkingVPN setup shows how to use IAS with VPN concentrator, ASA, or PIX. Basically, every vpn user connects with the same PCF file and enters into a group. When their username gets authenticated with ActiveDirectory, AD returns a group name to the CVPN/ASA/PIX and the pix puts them in that group.
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