The Session and Bandwidth limitation features are useful where you are concerned that individual users on your network might make disproportionate use of your Internet connection, causing inconvenience for other users. These features restrict LAN clients idenified by their IP address. For this reason, it is important that the PCs always have the same IP address so that they always have the correct limitations applied. You can hard-code the PCs IP addresses or pre-set the DHCP allocations from the router (the latter being preferred).
You can limit the amount of Upstream and Downstream Bandwidth that any device on your network is allowed to use, based on their IP Address. Under the router’s ‘Limit Bandwidth’ enter the range of IP Addresses you wish to limit. If it for a single PC or device’s IP address, set the start and end IP the same. Rate is specified in Kilobits per second. For example, a ‘one Meg’ ADSL line is 1024 Kilobits so to prevent a user consuming more than half of that, set the RX (receive/download) limit to 512. TX is for transmission/upload limits.
A ‘Session’ is a single connection from one device to another across a network. For example; when you visit a website on the Internet your PC creates a single session between itself and the Web Server. When using NAT, your PC, the router and your onward ISP connectivity has to keep track of all of these sessions. A Vigor router, for example, might have room for up to 15000 simultaneous sessions – that’s a lot, equivalent to connecting to 15000 web servers, however if you or your users make use of Peer-to-Peer (P2P) If you are the only user of your Internet connection, you can use the connection for anything you like without inconveniencing anyone else, but on a shared network it can be a problem and as system manager you may wish to enforce user policy by restricting sessions.
To enable this feature for a paricular client (identified by its IP address), Under the ‘Bandwidth Management’ link select the Limit Session setup. Enable the function and define a Default maximum number of sessions per IP Address which will be applied to all devices on the LAN.
In addition you can define more specific limits for single and/or ranges of IP Address. Enter the Start IP and End IP of the computers you wish to limit, along with the maximum number of Sessions allowed. If the setup is just for one single IP Address set the Start IP and End IP the same.
Linux distribution for experimental routing. It consists of XORP control plane software and Click Modular Router module, which serves as a forwarding plane. Applications are already integrated and the system is ready-to-use. The system is distributed as a live ISO image and supports additional Click packages.
Linux distribution running from a RAM drive. Its original target was small appliances like routers, VPN gateways, or embedded x86devices. However, it supports hosting other Linux guest OSes under VServer control, making it an attractive hosting solution as well. Uses Busybox and uClibc.
The goal of this project is to find out stability, performance, filter capabilities, administration, computer security, scalability and development possibilities of a Linux based streamlined router/firewall system. Recent distributions are being used as pure Internet routers, equipped with 1 GB or more of internal memory.
Router and firewall for SMBs with network, gateway and server modules accessed through WebConfig. A paid registration for extra online services is available, but not necessary for operation of the product.
UTM distribution with routing, firewall, anti-spam and anti-virus for web, FTP and e-mail, OpenVPN, IPsec, hotspot functionality, and captive portal (missing in community version). Endian Firewall Community (EFW) is a complete version for x86. The anti-virus for EFW is Sophos or ClamAV. The intrusion protection is Snort.
Direct hook into Linux kernel packet stream, LDAP and user based authentication, user quotas, QOS, advanced analytics,intrusion detection system, CLI and web management utilities. Also available in a Debian based Linux distribution.
Enterprise-class router, firewall, VPN, intrusion protection and more delivered as a complete network operating system that runs on x86 hardware or in XenServer, VMware or Hyper-V to provide vFirewall, vRouter network virtualization functionality.
Free (contribution required for some graphing functions)
Web-administrative router/firewall live CD with QoS features. It is also able to act as a Wi-Fi access point with advanced features such as the multiple SSID and 802.1x RADIUS authentication. Zeroshell supports VLAN trunking (802.1q), bridging, WAN load balancing, and fail-over features.
The latest, most expensive routers include so many facilities you’d be forgiven for thinking they’re more like PCs than tools for networking. This thought should lead you to wonder if you can use a regular PC to do the same thing. The answer, thanks to Linux, is that you can – and it’s very easy.
There are many different Linux distributions designed specifically to turn your machine into a router or a gateway, complete with any number of enhancements.
Our favourite is called ClearOS. It’s a fantastic choice of router for your network because it’s relatively painless to configure, but it’s also extendible, taking it far beyond even the most ambitious devices from manufacturers like Netgear.
You could use it to host your cloud documents, complete with editing, host and access your email, either through a web interface or server, as well as a powerful firewall and intrusion detection.
ClearOS is unlike most Linux distributions because it offers both a free edition and a commercial edition that you have to pay for. Because some people do pay for it, ClearOS has one of the better user interfaces, and most of its facilities can be installed and configured through a web app.
It’s also easy to install, and has a great support network. This is important, because all your network’s data is going to go through the distribution, and you need to be able to trust both the integrity of the packages and services its running, and the source of those packages and the distribution itself.
Fortunately, ClearOS’s heritage couldn’t be any better, since it’s based on the billion dollar Red Hat enterprise.
ClearOS uses Red Hat’s graphical installer and asks you only a few questions. Boot your machine with the ClearOS DVD in the drive (a USB option is also available), and choose the first option from the boot menu: ‘Install or upgrade an existing system’.
The graphical installer will appear after a few moments and you’ll have to answer the usual questions about language and keyboard layout. After these are out of the way, choose ‘Basic storage device’ as your installation medium and step through the regular drive and partition options. The next few questions deal with the network and where you’re located, before asking how you’d like to allocate space on your drives.
The default values will choose a drive and create an installation automatically, but be warned, this will remove all data from the drive it chooses.
The following two questions will confirm your choices before the installer goes off and does some installing. When this has finished, you get the chance to reboot into your new installation and removing the DVD would be advisable.
When your machine has booted, the first thing you’ll notice is the lack of a desktop. In fact, the only thing you should see is a screen telling you the IP address of your machine and where to get further information. This is because, like any modern router, ClearOS is intended to be configured through a web browser.
After you’ve made a note of its IP address, you can disconnect any screen, keyboard and mouse and hide the machine away under the floorboards if you like. As long as it’s connected to the network, you’ll be able to change the settings.
Go to a browser on a machine on the same network and type in this IP address, using both the ‘https’ prefix and the port ’81’. For our network, for example, we typed in https://192.168.1.21:81.
The page that appears asks you to log in, and you’ll need to enter a username of ‘root’ followed by the password requested by the installer. You’ll then be presented with the first page of the ClearOS startup wizard.
Click ‘Next’ and you’ll be asked which network mode you want to configure. Which you choose will depend on how you want to use your new router.
The best option here is Gateway Mode, but this won’t appear unless you have two network adaptors installed – one connected to the internet and the other to your LAN. If you’d rather experiment with ClearOS as a server, choose one of the two other options.
After selecting Gateway Mode, you need to tell the wizard which adaptor is which. The installer makes a pretty good guess at this, marking one adaptor as External and the other as LAN, but you can change the assignment if it’s wrong using the ‘Edit’ button.
The next question asks for a DNS, and we’d recommend entering the IP address of either your ISP, Google (18.104.22.168) or OpenDNS (22.214.171.124). After this, make sure the free community edition is selected and click ‘Next’ to download and install any critical updates.
One of the best things about ClearOS is a package manager it calls the Marketplace, and the next step of the installation is to create an account to access this. You’ll be asked for an email address, and be instructed to register your system with your new credentials.
You’ll now be asked a couple of questions about domain names for your connection. If this is a home connection, you might not have one. We’d recommend using a free dynamic DNS service to get yourself one. Otherwise, you can always use a made-up name or the default values as a temporary fix.
We can now start installing applications. To start with, we’d recommend selecting the Windows file server, the bandwidth manager, port forwarding and the FTP server, but you can always come back at a later time and install more applications.
After making your selection, click on the ‘Download and install’ button. This will automatically grab and install all the packages you’ve selected. A few minutes later, depending on the speed of your connection, you’ll be presented with the ClearOS dashboard and you’ll be able to start using your new gateway.
A gateway with a firewall acts as a permissive barrier between two networks. In our case, that’s between the internet and your local network. It’s a necessary precaution because the internet is saturated with systems that constantly bombard every connection with random requests directed at ports with known vulnerabilities. Most of these vulnerabilities are found on non-updated versions of Windows, but they can also be found within almost any network-facing service, such as a web server or file server.
Within ClearOS, the firewall can be configured by clicking on the ‘Network’ menu on the left or top of the dashboard, followed by ‘Incoming Firewall’. By default, there should already be a single defined rule called webconfig. This allows port 81 on the oncoming connection, which is the port you need to access the ClearOS web interface.
This rule means you can configure your gateway from the internet, and if you don’t want this facility, click on ‘disable’ for the rule. To add your own rule, click ‘Add’. You don’t need to memorise most port numbers because the Add interface includes a list of the most common services. Select ‘SSH’, for example, and then click on ‘Add’ again. The rule list will now include SSH running on port 22, which is its default port.
If you need to add custom ports for your own services (or games) this can be done from the same interface.
ClearOS does run an SSH server, which is all you need if you want command-line access, but you may also want command line access to another machine in your network. To do this, you’ll need to use port forwarding. This takes an incoming connection on one port – 22 in the case of SSH – and maps this to a different port on either a local machine, or another machine within your LAN.
Click on ‘Port forwarding’ then ‘Add’. You’ll be able to select a standard service in the same way you could for the firewall, but you’ll also need to add a local IP address. This will be the destination for the port. You can forward custom ports, a range of ports and choose between UDP and TCP protocols by using the other options on the page.
The other feature you only find in advanced routers is the ability to limit connection bandwidth going through your router depending on what they’re doing. This is often known as QoS, or Quality of Service, because it’s often used to make sure time-sensitive data isn’t affected by a torrent download, for example. Time-sensitive data could be streaming video or VoIP, where getting packets to the client is important. File downloads aren’t normally affected by some delay.
When you select ‘Bandwidth manager’, you have two choices. The first of these deals with bandwidth limiting on an interface, while the second can be used to limit bandwidth by service. The first is useful if you have several subnets, such as a wireless host running on your gateway. You can use it to either restrict data coming into and out of this network, or restrict the other interfaces, so you can ensure there’s always a decent amount of bandwidth.
The Basic Rules table is the most useful for the majority of networks, because it allows you to promote those first-class services while still allowing people to download large files. Click on ‘Add’ and you’ll get the option to choose a service (like SIP or FTP), and specify whether you want the bandwidth limited or reserved, in which direction and at what rate.
To ensure SPI always gets 1Mbps, for example, choose ’Reserve’, ‘SIP’, ’Flowing to the network’ and set a rate of 1,000 (the rate is set in Kbps). If you have local users saturating your upstream bandwidth, change ’Flowing to the network’ to ‘Flowing from the network’. ClearOS will transparently limit the packets going through the network to ensure the services you depend upon will have the lion’s share of your bandwidth.
And unlike some ISPs we could mention, you’re in control of whether that’s BitTorrent or HTTP, which is the best thing about running your own gateway.
Ada yang udah pernah nyoba beberapa tools seo terpopuler di kalangan webmaster indonesia? Klo belum yuk sama-sama kita mengenal tools seo gratis tersebut, mulai dari tools yang sifatnya plugin(dapat Kamu embed kedalam beberapa browser) sampai dengan web tools gratisan yang peformanya gila-gilaan, berikut refortsenya.
SEO Quake adalah sebuah plugin SEO Add Ons yang bisa Kamu Install pada beberapa browser seperti Mozilla Firefox, IE dan Chrome. Fungsi plugin ini adalah untuk menampilkan ukuran SEO suatu halaman website, melalui beberapa parameter yang bisa Kamu lihat antara lain Pagerank, alexa rank, google index page, google backlink, whois, delicious index dll.
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Spider Test adalah sebuah web tools seo yang memungkinkan Kamu untuk dapat melihat hasil crawler yang dilakukan oleh sebuah spider yang dimiliki oleh google, yahoo dan bing. Kamu akan dapat melihat sejauh mana efektifitas sebuah halaman web Kamu dimata spider-spider mesin tersebut, ingat kebanyakan blog yang baik tampilan luarnya belum tentu baik tampilan dalamnya, gak percaya? Cekidot sana ke spider test.
Who is domain
Who is domain adalah sebuah web tools seo yang juga memungkinkan kamu untuk dapat melihat secara detail informasi sebuah situs, mulai dari tempat hosting, name server, seo score dan masih banyak lagi. Pentanyaannya, mengapa kita harus tau hal tersebut? Karena hal ini akan berguna jika Kamu akan membeli sebuah website jadi(full packet), denga mengetahui latar belakang tersebut kamu bisa mengukur se-absah apa website yang sedang kamu hadapi.
Page speed labs
Page speed labs adalah sebuah web tools seo besutan google yang berfungsi untuk melihat kecepatan loading sebuah sebuah website/blog saat diakses oleh browser. Page speed juga memberikan informasi mengenai file-file apa saja yang membebani web tersebut, dan memberikan parameter seberapa berat file tersebut saat bersemayam sebuah website/blog.
Efektifitas Traffic Exchange Dalam Internet Marketing. Banyak orang akan mengatakan bahwa pertukaran lalu lintas tidak efektif. Untuk beberapa hal ini mungkin benar tergantung pada layanan atau produk yang ditawarkan. Traffic Exchange adalah pertukaran lalu lintas terhadap suatu situs web dimana dapat memperoleh kredit point dengan mengunjungi website-website anggota lainnya yang pada gilirannya website kitapun akan dikunjungi oleh anggota-anggota lainnya.
Efektifitas Traffic Exchange Dalam Internet Marketing
Efektifitas Traffic Exchange Dalam Internet Marketing
Bagi para webmaster ataupun blogger yang berkecimpung dalam Internet Marketing pasti telah akrab dengan Traffic Exchange. Oleh karena itu bagi para webmaster atau blogger yang memanfaatkan fasilitas traffic exchange seperti ini, memiliki beragam tujuan yang dapat diperoleh dari manfaat traffic exchange ini. Diantaranya adalah :
Jelas yaitu berburu atau meraup visitor yang mengunjungi website kita
Ada sugesti bila traffic berlimpah maka akan berpengaruh pada rampingnya nilai Alexa Rank
Nah, disini mencoa untuk sedikit mengulas langkah-langkah efektifitas menggunakan traffic exchange dalam Internet Marketing.
Pastikan homepage URL menjelaskan secara singkat dan jelas tentang layanan atau produk serta pembahasan artikel blog wesite kita. Dikarenakan traffic exchange ini telah memiliki rentang waktu tampil, jadi diharapkan dengan sekilas membaca, orang akan lebih tertarik untuk mengunjungi website kita secara langsung.
Efektifkan halaman homepage dengan berbagai navigasi menu yang dapat memudahkan atau menarik minat orang lain untuk surfing langsung bukan hanya sekedar menyaksikan secara otomatis lewat traffic exchange.
Bersiaplah untuk bekerja keras untuk mendapatkan kredit point yang dihasilkan dengan standby melakukan traffic exchange agar kredit kita semakin banyak sehingga semakin banyak pula kesempatan website kita tampil pada suatu layanan traffic exchange.
Dengan 3 cara langkah efektif tersebut diharapkan kita dapat memaksimalkan bergabungnya kita dalam suatu layanan traffic exchange. Jelas ini dibutuhkan untuk perencanaan untuk mendapatkan hasil yang maksimal dan efektif.