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Networking and Wi-Fi

The “De-perimeterization” of Networks

The architecture of the network perimeter is changing. The wisdom of the past was to harden the perimeter as much as possible by layering multiple technologies to detect and protect against threat. The concept was to secure organizational borders and then, after that, the network. There were various business drivers that put this “perimeterization” in …

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10 tips for improving your wireless network

If Windows ever notifies you about a weak signal, it probably means your connection isn’t as fast or as reliable as it could be. Worse, you might lose your connection entirely in some parts of your home. If you’re looking to improve the signal for your wireless network, try some of these tips for extending your wireless range and improving your wireless network performance. 1. Position your wireless router (or wireless access point) in a central location.When possible, place your wireless router in a central location in your home. If your wireless router is against an outside wall of your home, the signal will be weak on the other side of your home. Don’t worry if you can’t move your wireless router, because there are many other ways to improve your connection.

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Konsep Subnetting

Subnetting adalah termasuk materi yang banyak keluar di ujian CCNA dengan berbagai variasi soal. Juga menjadi momok bagi student atau instruktur yang sedang menyelesaikan kurikulum CCNA 1 program CNAP (Cisco Networking Academy Program). Untuk menjelaskan tentang subnetting, saya biasanya menggunakan beberapa ilustrasi dan analogi yang sudah kita kenal di sekitar kita. Artikel ini di tulis untuk rekan-rekan yang sedang belajar jaringan, yang mempersiapkan diri mengikuti ujian CCNA, dan yang sedang mengikuti pelatihan CCNA . Sebenarnya subnetting itu apa dan kenapa harus dilakukan? Pertanyaan ini bisa dijawab dengan analogi sebuah jalan. Jalan bernama Gatot Subroto terdiri dari beberapa rumah bernomor 01-08, dengan rumah nomor 08 adalah rumah Ketua RT yang memiliki tugas mengumumkan informasi apapun kepada seluruh rumah di wilayah Jl. Gatot Subroto.

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How To Set Up A FreeBSD Wireless Access Point

This document will guide you on how to use a FreeBSD system as a wireless access point. This is intended to supplement the FreeBSD Handbook and not replace it. Getting FreeBSD to act as a wireless access point involves the following steps: Make sure your installation includes hostapd and named (BIND) Recompile your kernel for pf support pf is not the only way to do this, but I strongly prefer pf to the ipfw/ipfilter and have written the How-To to use it Configure NAT (and any firewall rules) Install isc-dhcp3-server Configure daemons and start them Hardware Requirements/Notes: One network card to connect to the upstream. This is the external network interface (ext_if). In this How-To it will be fxp0. Yours may differ. One wireless card to provide wireless services. I prefer Atheros-based cards, whatever FreeBSD supported card you have is fine, though (wifi_if). In this How-To it will be ath0. …

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Which ISPs Are Spying on You?

The few souls that attempt to read and understand website privacy policies know they are almost universally unintelligible and shot through with clever loopholes. But one of the most important policies to know is your internet service provider’s — the company that ferries all your traffic to and from the internet, from search queries to BitTorrent uploads, flirty IMs to porn. Wired News, with help from some readers, attempted to get real answers from the largest United States-based ISPs about what information they gather on their customers’ use of the internet, and how long they retain records like IP addresses, e-mail and real-time browsing activity. Most importantly, we asked what they require from law-enforcement agencies before coughing up the data, and whether they sell your data to marketers. Only four of the eight largest ISPs responded to the 10-question survey, despite being contacted repeatedly over the course of two months. …

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MENGHUKUM DIRI SENDIRI

Suatu ketika, Raden Permadi didatangi sekelompok “orang kampung” dalam keadaan cemas. Kelompok orang tersebut minta pertolongan sang ksatria untuk menumpas sekawanan perampok yang sedang merajalela di kampungnya. Terdorong rasa kemanusiaan yang mendalam, apalagi mentaati posisinya sebagai penjaga ketentraman, Raden Permadi tanpa pikir masuk ke gudang senjata, mengambil panah sebagai sarana untuk menghadapi pengacau. Betapa terkejutnya dia, karena didapati kakaknya, Raden Yudisthira sedang memadu kasih dengan Dewi Drupadi. Suatu tindakan tidak sopan bagi adik untuk menyaksikan keadaan ini. Apa boleh buat, dia tetap memasuki gudang, mengambil senjata untuk membantu rakyat.

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Apakah Anda Sudah Belajar

SAYA BELAJAR, bahwa saya tidak dapat memaksa orang lain mencintai saya, saya hanya dapat melakukan sesuatu untuk orang yang saya cintai ………. SAYA BELAJAR, bahwa persahabatan sejati senantiasa bertumbuh walau dipisahkan oleh jarak yang jauh, beberapa di antaranya melahirkan cinta sejati ….. SAYA BELAJAR, bahwa sebaik-baiknya pasangan itu, mereka pasti pernah melukai perasaan saya, dan untuk itu saya harus memaafkannya ….. SAYA BELAJAR, bahwa tidak ada yang instant atau serba cepat di dunia ini, semua butuh proses pertumbuhan kecuali saya ingin sakit hati ….. SAYA BELAJAR, bahwa saya punya hak untuk marah, tetapi itu bukan berarti saya harus benci dan berlaku bengis …… SAYA BELAJAR, bahwa orang-orang yang saya kasihi justru sering diambil segera dari kehidupan saya …… SAYA BELAJAR, bahwa kata-kata manis tanpa tindakan adalah saat perpisahan dengan orang yang saya cintai …… SAYA BELAJAR, bahwa butuh waktu bertahun-tahun untuk membangun kepercayaan dan hanya beberapa detik saja untuk menghancurkannya …

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Set up a wireless network using a router

IP ADDRESS AGONY Your computer is a fountain of useful information, a treasure trove of music and video that wants nothing more than to share its wealth with the world. But, alas, a peculiar affliction seems to have rendered it unable to converse with its own kind. You just finished connecting it and two other computers in your home to your wireless router, but when you explore your machine’s network neighborhood, you find only endless white blank space. Are these computers destined to live in the darkness of their private worlds? Why can’t they see each other? These tips can help you use your wireless router to share your Internet connection. 1. Check your computers’ IP addresses. First, confirm that all of your computers have matching, compatible IP addresses. To do this on a Windows PC, open a command prompt by clicking Start > Run. Type cmd into the text …

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Optimize your router for a stable wireless connection

Say you’re approaching the end of a large download, and in the middle of a Skype call to clients in China, without warning, your Wi-Fi connection drops, leaving your download and VoIP call in limbo. You retry the wireless connection, but your router, though blinking contentedly in your den, seems to be off the air. Two hours later, for no apparent reason, your Wi-Fi connection miraculously resurfaces. Wireless networking can be a blessing and a curse: great when it works and a mind-numbing frustration when it doesn’t. A common complaint among many who have moved to Wi-Fi is that their wireless connection mysteriously fades in and out. These steps will help you create a stable, always-on wireless connection. 1. Change channels. Interference is a likely cause of intermittent connections, such as the one described above. All 802.11b and 802.11g networks operate at 2.4GHz, in a small swath of spectrum once …

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