Tagged: networking

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Certifications / Networking / Technology

December 11, 2012

TCP/IP Subnetting Quick Tip

Here is a quick tip. Memorize the Private TCP/IP  address ranges. There will most likely be questions on the certification exams regarding information on RFC-1918 aka the private IP ADDRESSING ranges. There are 3 blocks of un-routable addresses you can use when designing your networks. Class A: 10.0.0.0 – 10.255.255.255 (10.0.0.0/8) Class B: 172.16.0.0 – 172.31.255.255 (172.16.0.0/12) Class C: 192.168.0.0 – 192.168.255.255 (192.168.0.0/16) These will help you in the exam when they ask you which is a valid private ip addressing scheme to use within your network. Beware of the trick questions when they ask what the masks are. I...

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Certifications / Computers / Networking / Technology

December 10, 2012

TCP/IP Subnetting

As I have mentioned before I have been working with computer networks for the past 10 years or so. One of the most challenging concepts that I have encountered while I studying to get my CCNA was learning how to Subnet and how to subnet the subnets using Variable Length Subnet Masks (VLSM). I quickly found out that if you do not have a solid foundation on how to subnet and how to use VLSM’s you will have a hard time understanding and implementing other networking features. These features would include IP Access Lists, Route Maps, Policy Maps, Distribution Lists…...

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Computers / Consumer Electronics / Networking / Projects / Technology

December 4, 2012

PFSENSE a DIY Router/Firewall

I have worked with computer networks for 10+ years. I have seen many routers and firewalls for home use. The home networking market is flooded with devices from Linksys, Netgear, Belkin, and Apple. For most users they are fine offering capabilities as wireless access, port forwarding,  Address Translation and basic to intermediate firewalls.  Some of theses devices are good others can be horrible. I have seen many with buggy firmware causing the device to crash, randomly reboot, drop connections, offer poor performance and in fail completely. I am not saying these devices should be looked down upon or thrown out,...

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