This past July, I found myself looking for a way to test a web application from behind “the great firewall of China” (aka Golden Shield). The problem is that I can’t test that something works in China if I’m not in China. My first thought was to use Nord VPN to connect to a VPN …
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I have been using Hamachi since first hearing about it on Security Now, over 10 years ago. Hamachi is a hosted virtual private network solution that can create links with devices that are behind NAT firewalls. Hamachi is able to do so by using server-assisted NAT traversal. I mostly use it to access virtual machines from outside of …
Continue reading "Getting Hamachi working with the Raspberry Pi 3"IPv4 addresses are divided into five classes. Each IP address class has a different maximum number of IPs that exist within it. Class First Octet Range Default Subnet Mask Maximum Number of Hosts Per Network A 1-127 255.0.0.0 16,777,214 Hosts (2^24-2) B 128-191 255.255.0.0 65,534 Hosts (2^16-2) C 192-223 255.255.255.0 254 Hosts (2^8-2) D 224-239 …
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This week’s phone app is the Network+ Vocabulary App. I have been taking a Network+ class at the Milwaukee Area Technical College and I figured that writing a study guide for the test, would both net me another app and help me study. For note, this covers the vocabulary for exam N10-005. Try it in …
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The OSI (Open Systems Interconnection) model, is a conceptual model of computer-to-computer communications, over a network. It was defined was defined in ISO/IEC 7498-1, by the International Organization for Standardization (ISO) in 1984. The model is not meant to specify exactly what processes occur. Instead, it describes them. The OSI model, has seven layers: (1) Physical, (2) …
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