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Shaun Hummel - Articles Shaun Hummel, CCNP, is a Senior Network Engineer with 11 years experience in enterprise network planning, design, and implementation. He has worked for various private and public companies in Canada and the United States improving infrastructure, security, and management. He has written Network Planning and Design Guide, Cisco Wireless Network Design Guide and Network Assessment Guide.
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 How Telecommuting Can Be Cost Effective to Corporate AmericaThe work from home option often called telecommuting is not an easy sell to employers who have used a work model that has consisted of employees commuting daily during the work week. The fears that employees wont do the assigned tasks and not continue communicating with co-workers is a concern. The work goals should be defined as specifically as possible whether your working from home part-time or at the office each day. Wireless Network VLANS - How to Implement Wireless VLANSThe wireless access points operate as bridges with no routing defined anywhere on the wireless network segment. All VLANs are defined on the wired switches and mapped with specific SSIDs at each access point. The maximum number of VLANs and SSIDs per access point that can be mapped is 16. The wireless client attaches or associates with a specific SSID which in turn will map client with membership in a specific VLAN. Network Switch Selection - How to Select a Network SwitchThe network switch is the most common network device with most network infrastructure and as such selection of new switches or upgrading is a key part of most network design projects. Wireless designs will have switches interfacing with access points. That will in some cases have an affect on the switch such as increased utilization, assigned switch ports, access lists, trunking, Power over Ethernet (PoE) wattage draw or spanning tree protocol. The decision to buy new switches or upgrade will be determined after considering the network assessment and design features specified. The 5 network switch components include switch chassis, supervisor engine, switching modules, power supplies and IOS/Cat OS software. Online Job Interview - How Desktop Conference Software is Cost EffectiveWeb conferencing is available FREE of charge allowing recruiters to interview candidates from their office and setting up video interviews between their distant clients and candidates at the recruiter office. Some recruiters often have to interview candidates for 10 minutes at their office before approving resume submittal and clients of course want to do personal interviews unless it is a contract. Having the option to offer personal interviews is a selling point. Wireless Network SecurityThis article discusses how to secure your home and business wireless network. The process of a client associating and authenticating to an access point is standard. The security requirements vary from a home network, standard small businesses to government departments requiring stringent network security. Firewall Internet Security - The Basics of a FirewallEnterprise companies today employ firewalls that do stateful inspection of sessions between external and internal hosts and devices. Cisco employs a patented ASA algorithm that utilizes source IP address, destination IP address, TCP sequence numbers, port numbers and TCP flags to examine and prevent unauthorized sessions. Wireless Network Standards - 802.11a, 802.11b, 802.11g, 802.16, 802.11n802.11a standard was approved in 1999 with the IEEE committee. It specifies a maximum data rate of 54 Mbps using 5.15 GHz - 5.35 GHz and 5.725 GHz - 5.825 GHz unlicensed bands in the United States. The advantage of 802.11a is higher throughput however the cell coverage is smaller and additional access points will be needed. There is much less interference from devices such as cell phones, microwaves and commercial devices using the 2.4 GHz band. Troubleshooting Network ProblemsThe process of troubleshooting your network involves a methodology that starts with cabling and works through the OSI model to the application layer. The network devices have a network cable that terminates at a wired switch. Cabling is a source of a lot of network problems. The key with troubleshooting is to determine what has changed. Sometimes it is hardware that isn't working or some change was made such as new software, configured equipment or additional employees stressing the network. Disaster Recovery Planning and Network Services ContinuityDisaster recovery planning (DRP) starts with a discussion that involves key management employees. It is important to get their support with any disaster recovery initiative. Explain what disaster recovery is and why it is required for business continuity, cost reduction, generating revenue and improving productivity. Disaster scenarios such as fire, flood, earthquake, cold weather and employee sabotage should be discussed. Internet Security and VPN Network DesignThis article discusses some essential technical concepts associated with a VPN. A Virtual Private Network (VPN) integrates remote employees, company offices, and business partners using the Internet and secures encrypted tunnels between locations. An Access VPN is used to connect remote users to the enterprise network. The remote workstation or laptop will use an access circuit such as Cable, DSL or Wireless to connect to a local Internet Service Provider (ISP).
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