Virtual Private Network

Cisco AP 541N is a robust wireless access point with business-class features including Clustering technology for a single point of administration for multiple access points. With clustering technology, you can configure and manage all access points as a single wireless network, rather than as a collection of individual devices without the need for a wireless controller. Building a large wireless network in businesses or campuses with multiple buildings frequently requires multiple wireless access points to deploy. Wireless access point devices have limitation in the network coverage particularly when the obstacles exist. The number, thickness and location of walls, ceilings, or other objects that the wireless signals must pass through, may limit the range. Typical ranges vary depending on the types of materials and background RF (radio frequency) noise in your environments. Deployment a single access point device to cover a large area with multiple buildings such as large office buildings, multiple storey buildings, may not be adequate in providing good signal strength to the clients. Therefore deployment of multiple access point devices would be a solution to cover dead spots. Setting up and configuring multiple devices are generally performed one by one that may lead to miss-configuration and administration overhead. Cisco introduces AP 541N Wireless Access Point with clustering technology. Clustering technology allows you centralize a single point of administration for multiple access point deployments. What this Product Does Cisco AP 541N Wireless Access Point is powered by the latest wireless technology 802.11n with selectable dual-band frequency either 2.4 GHz or 5 GHz and combined with smart antenna MIMO (multiple-input multiple output) technology to provide much greater resiliency and data throughput. Cisco AP 541N Wireless Access Point supports clustering technology for a single point of administration for multiple access points deployment. Clustering technology makes it easy to set up, configure, and run your network. Clustering is the ability of a wireless access point to form a dynamic, configuration-aware group (called a cluster) with other similarly designed access points in the same network and subnet. All access points in the cluster self-organize, cloning configuration settings from one access point to another and balancing wireless channels to minimize radio interference. The cluster also provides a single point of administration, allowing you to configure and manage all access points as a single wireless network, rather than as a collection of individual devices without the need for a wireless controller. With clustering, you can share the following information within the cluster • Wireless network identifier (SSID), which is the your unique network name • Security features, such as encryption settings (WPA, WPA2, or WEP), access lists, and MAC address filters (either allowed or denied) • User names and passwords • Quality of service (QoS) settings • Radio settings • Wireless interface settings • Guest welcome screen Cisco AP 541N supports a secure guest access which is easy to setup using easy to follow graphical user interface (GUI). With secure guest access, you can create a security boundary separated from your private networks to allow your business partners and other visitors to access the internet when they visit your business location without granting them any visibility into your business network and without impeding the performance of your business applications. You can also provide a welcome screen to greet visitors using your guest network. Cisco AP 541N access point supports strong security features including advanced Wi-Fi Protected Access (WPA2) encryption, rogue access point detection, access control lists, and MAC address filtering. Cisco AP 541N access point can be operated either in a standalone wireless access point or as part of a larger business network. You can easily add the wireless access points to grow with your business as your needs change, while minimizing operational costs. Deployment can be flexible either using AC power or Power over Ethernet (PoE) to simplify installation in locations where no power outlets are available such as in ceilings to support virtually any deployment. Cisco AP 541N wireless access point is a robust system which can be deployed in stand alone or part of your large business with business class security features to better protect your employees, your guests, and your business. By Ki Grinsing Ki Grinsing was graduated from a technical college (ITS-Surabaya) with the addition of MCSE and CCNA professional certifications. He has prolonged years of working experiences in IT projects. Please visit the articles: Cisco AP541n access point and dgn3500 wireless gateway router

Wireless networks have become hugely popular in companies as well as in the homes. The beauty of all wireless networks is the lack of wires – no cables are required, no hassle of running the network cables. Home users with lack of networking knowledge can now build a wireless network in home easily with all-in-one SBG6580 cable modem router. Basically when you build a wireless network to share your Cable broadband internet connection with multiple computers in home securely, you require three devices. Firstly, you need a cable modem. A modem is used to covert analog signal to digital signal and vice versa. Secondly, you need a router with firewall feature. A Router (with firewall feature) is used to help your private network protected against any types of internet threats. Besides, firewall with NAT function is used to allow a single internet connection to share with multiple computers in the network. And lastly you need a wireless access point to extend the network wirelessly. Building a wireless network with three devices by mostly home users who lack of networking knowledge will sound complicated. Fortunately technology innovations make life easier. Motorola ships a compact device – an all-in-one device which combines all the requirements in building the wireless network in home with no hassle, SBG6580 cable modem router. What this Product Does SURFboard SBG6580 is a fully integrated all-in-one cable modem router, a single device for your home wireless network solution to share your Cable Internet connection. Not just that, with a wireless network in home you can share documents, share multifunction printer (with wireless print server), play games, and make Internet phone calls. Cable Modem Function SBG6580 is a DOCSIS 3.0 / EuroDOCSIS 3.o cable modem, enables channel bonding of up to 8 downstream and 4 upstream channels – which allows an operator to offer their customers advanced multimedia services, capable of data rates of well over 300 Mbps in DOCSIS and 400 Mbps in EuroDOCSIS in the received (downstream) data stream and over 100 Mbps in the send (upstream) data stream. This is the first requirement for your network. Firewall & Router Function SBG6580 cable modem router supports the NAT firewall feature to allow network IP address translation, means you can share a single Internet connection with many computers in the network behind the firewall. The modem also supports the Stateful Packet Inspection (SPI) feature for inbound traffic filter in protecting your network against any internet threats such as DoS (Denial of Services) and malware. The modem also supports the routing function including static route and dynamic routing (RIPv1, RIPv2). This is the second requirement for your network. Wireless Access Point SBG6580 cable modem wireless router is powered by the wireless access point with the latest wireless technology 802.11n standards with dual selectable frequency band (2.4 GHz or 5 GHz) and with an internal 2 x 2 antenna array, enables users to maximize the high-bandwidth potential of their home or business networks. Besides the wireless access, the users can also utilize the included 4 Gigabit Ethernet ports for high speed wired connections to the computers. This is your third requirement for your wireless network in home. The modem also includes the DHCP service that is very essential service for networking. With the DHCP service, all the IP configurations of all the computers in the network will be done automatically – reducing the administration overhead. Unlike wired connection, wireless connection is susceptible for the eavesdropping by the users within the network coverage. Therefore, the SBG6580 supports the wide range of security including WEP-64/128, WPA-PSK, WPA, WPA2, TKIP, AES, 802.1x, 802.11i (pre-authentication). For secure client connection to the network, the device supports user-friendly Wi-Fi protected setup (WPS) to easily connect with WPS compatible device The modem also supports the VPN feature to allow you create secure tunneling into your private network via the public network (aka the internet). Travelling users can access the private network via the internet from all over the world securely with L2TP. The SBG6580 includes an enhanced tuner that supports up to a 1 GHz downstream input allowing operators to increase the frequency spectrum for deployment of new high-value services such as bandwidth on-demand, commercial services, interactive gaming, and IPTV to their customers. By Ki Grinsing Ki Grinsing was graduated from a technical college with the additions of CCNA and MCSE certifications. He has prolonged years of working experiences in IT. Please visit wireless cable modem router and Wireless DSL Modem Router

Wireless networks have made surfing the Internet a convenient and mobile experience. Most coffee shops, internet cafes, public libraries, and hotels now offer free wireless network access. In addition, the affordability of laptops and netbooks has made these public Wi-Fi hotspots even more popular. However, you must take precautions when using any of these free Wi-Fi hotspots.  How can you Keep Free Wireless Networks Run smoothly? It is crucial that you take the necessary steps to protect your PC before you connect to a public wireless network. You can do so by taking the following steps: Use a Secure Connection: If you use the Internet for financial purposes like online banking or stock trading at places like an Internet cafe, verify the website is using a secure connection. When a secure connection is active, a padlock icon is visible at the bottom of your web browser. Another way to confirm that the website uses a secure connection is when its URL begins with https and not http. Install a Firewall: Most places that offer Internet access have a router with a built-in firewall. Although this firewall will protect you from intruders and threats on the Internet, it offers no protection against threats on the wireless network. Therefore, make sure Windows firewall is enabled on your laptop or install a third-party software firewall when you surf the Internet on a free wireless network. Use a Virtual Private Network (VPN): If you need to be absolutely certain your connection to the Internet is secure when using a free wireless network, then you should use a VPN connection. A VPN connection will encrypt the data you send from your laptop to the wireless router. Therefore, nobody else that is on the free wireless network can see what you are doing. You can subscribe to a VPN connection through a third-party provider for a monthly rate. Once you have a subscription, all you need to do is connect to VPN immediately after you connect to the public Wi-Fi network. Use Antivirus and Antispyware Software: It is crucial that you have the real-time protection of an antivirus and antispyware software while you surf the Internet on a free wireless network. Make sure that your antivirus and antispyware software are updated with the latest security threat definitions. Having these security tools will protect your laptop from infections that maybe present on other laptops in the public Wi-Fi hotspot. Free wireless networks are convenient since they allow users to access the Internet outside of their home or workplace. However, you have to be aware that these free networks are not secure. By following the tips presented in this article, you will keep your laptop and data safe while accessing the Internet on a free wireless network. To keep Wireless Networks running smoothly, you can click here to get the best security tool for protecting your PC security and keep it in safe. Click here to get your PC protected with the best security program!

The term the best for wireless router is relative, because manufacturers always ship new product introductions each several months or so which are better performance and by adopting the latest technologies available in the marketplace. Today, each of the wireless manufacturers has shipped new wireless routers with gigabit LAN and WAN interfaces for their high-performance category products. Now, which one is the best among those gigabit wireless route products? Assume you get the best gigabit wireless router today, the next six months or so come a new product introduction with much better performance and the latest technology, who knows. So, in selecting the best one, you should include the following criteria: 1. High-speed. To provide high speed data throughput – the wireless router should be powered with the latest wireless technology – the ratified version of the 802.11n technology. The draft version of 802.11n was approved last Sep 2009 with some option additions. 2. Clean wireless. 5 GHz is cleaner frequency band compared with 2.4 GHz band since wireless router which operates in 5 GHz frequency band is less noise / interference. So, the best router should support the 802.11a technology which operates in 5 GHz frequency band. The router should support the dual-band technology. 3. Further range. So far, the technology adopted for the wireless devices to deliver longer distance range is the MIMO (Multiple-in Multiple-out) technology combined with wireless N. Some manufacturers do not specifically specify the MIMO technology in their products but they adopt the technology into the products. 4. Consistent data throughput. High-intensive bandwidth applications such as gaming and video streaming demand consistent data throughput for lag-free and jitter-free performance. Your best gigabit wireless router should support the Quality of Services (QoS) technology for multimedia traffic prioritizations. 5. Secure. Mostly all new wireless routers today are powered with the latest security technology including the WPA/WPA2; NAT and SPI firewall; VPN pass-through; and the new feature option is the capability of providing a security boundary for guest access. Typically the router supports the multiple SSID for secure guest access. Guest access is ideal for your SOHO environment where you allow your business visitors access the internet without providing your private network resources. In selecting the best gigabit wireless router, you should examine that the router support the above criteria for high-performance wireless network. The following list some of the best gigabit wireless routers – the new product introduction from the leading wireless networking manufacturers: DIR-665 D-Link Xtreme N450 Gigabit Router DIR-665 Xtreme N450 is the fastest router introduced by D Link early this year (2010). The router is powered by the new version of 802.11n with 3×3 MIMO technologies (with 3 External Dual Band Antenna) which uses three distinct data streams for extremely high-speed data throughput of up to 450Mbps (in ideal condition). With the addition of advanced Intelligent QoS Prioritization Technology, the router is ideal for smooth streaming video and fast response gaming applications. DIR-665 is also powered by the HD Fuel technology for high-performance environment for lag-free streaming video and jitter-free online gaming applications. The router also supports the selectable dual-band technology. DIR-665 also supports advanced security features including dual-firewall (NAT & SPI); WPA/WPA2; IGMP; VPN-pass through; and also parental control. Push Button (for WPS) is also supported for easy secure client connection. It supports Windows 7, Vista, XP SP2, or Mac OS. However, DIR-665 doesn’t support guest network access . For home environment, you do not need this feature. WNDR37AV Wireless Router For Video And Gaming WNDR37AV is designed for high-performance wireless network for smooth video streaming and online gaming. Unlike DIR-665 which is designed with selectable dual-band, WNDR37AV is designed with simultaneous dual-band for mix environments both in 2.4GHz and 5 GHz at the same time. The router supports advanced QoS including WMM (Wireless Multimedia) QoS. This router is embedded with USB port with ReadySHARE technology for USB Storage Access. The good thing with this USB port is that it is DLNA compliant. WNDR37AV supports advanced security features like DIR-665, but it also supports free live parental control and multiple SSID for secure guest access. Cisco-Linksys E3000 High-Performance Wireless-N Router Linksys E3000 is one of new Linksys E-Series which is designed for high-performance environment to support smooth online gaming and streaming video. It is powered by 802.11n with simultaneous technology and it is equipped with 6 internal antennas for further range. E3000 is equipped with USB port to allow you connect USB external storage for centralized file sharing with built-in UPnP AV media server to stream entertainment content. The storage can be shared for accessible across your home network or over the internet. For security, the router supports common security features like other routers but this router supports secure guest access with Cisco connect software for simple setup steps. In selecting the best gigabit wireless router, you should consider the router that is powered by the final version of 802.11n (not draft) technology, supports dual-band and MIMO (or other MIMO variant) technologies, QoS, and secure with guest network access (for offices environments). By Ki Grinsing Ki Grinsing has prolonged years of working experiences in IT projects, currently He manages several blogs related to computer networking. Please visit best gigabit wireless routers and router with usb port .

  To me, the important lesson derived from the recent dust-up between the United Arab Emirates, India, Saudi Arabia and RIM, the company behind the BlackBerry, is that governments can spy on almost all wireless email. And, they get annoyed when they can’t. Not being able to hack into BlackBerry email almost got the devices banned in a number of countries. Interestingly, there are no stories of the US government threatening to shut down BlackBerry service because they couldn’t read the email. According to Reuters, U.S. authorities are able to tap into BlackBerry messages. The article also notes that “… security experts say that many governments around the world enjoy the ability to monitor BlackBerry conversations as they do communications involving most types of mobile devices.” Obviously, a heads up for anyone that sends email wirelessly. Just how protected is your wireless email from spying? Starting with the basics, wireless email may be sent over Wi-Fi or a data network from a cellphone company. WiFi over a router that you control is easily encrypted. WPA-TKIPand WPA2-AES are reasonably secure as long as you chose a long password that’s not in the dictionary. And, WPA and WPA2 encryption apply to any and all data traveling over the air, not just email.  For more on this, see my September 2009 article “The Best Security for Wireless Networks.” On a public Wi-Fi network, a VPN can be employed to also encrypt all data coming and going. For more on this see my article ”Being Secure on Public Wi-Fi: VPN, Firewalls, File Sharing.” Without a VPN, email sent over a public Wi-Fi network can still be encrypted using webmail with secure HTTPS web pages. Gmail is a great choice as Google encrypts all web pages, not just the login page. Yahoo is a poor choice, they only encrypt the login page. But email is also available using dedicated email software (Outlook, Thunderbird, Outlook Express, etc.) rather than webmail. Many, if not most, email software employs no security at all. It is available however, and we’ll discuss it more later. While Wi-Fi encryption is well-understood by many, encryption on CDMA and GSM cellphone networks is a bit more obscure. In discussing this back in February 2008 Steve Gibson said that these encryption technologies have been cracked. They are old and were designed when there was little computational horsepower available in cellphones. “It’s not like, you know, CDMA and GSM has been cracked to the degree, for example, that Wi-Fi has been. But there are papers on the ‘Net that talk about how this stuff can be cracked. So it’s not like there’s super-strong, industrial-grade, current state-of-the-art crypto. The problem is, these technologies, these digital cellular technologies are so old, and now so widely deployed, that they can’t be updated without obsoleting the entire network. And they’re, I mean, they’re encrypted to the extent that you have to really, really, really want to crack them in order to get inside them. But it is possible. Has been done.” There is also another way to tap into cellphone-based transmissions. At the recent Defcon convention, a hacker mimicked a cell tower and simply told the phone to turn off encryption. Kim Zetter writing for Wired describes it: “A security researcher created a cell phone base station that tricks cell phones into routing their outbound calls through his device, allowing someone to intercept even encrypted calls in the clear. The device tricks the phones into disabling encryption and records call details and content before they’re routed on their proper way through voice-over-IP. The low-cost, home-brewed device, developed by researcher Chris Paget, mimics more expensive devices already used by intelligence and law enforcement agencies – called IMSI catchers – that can capture phone ID data and content. The devices essentially spoof a legitimate GSM tower and entice cell phones to send them data by emitting a signal that’s stronger than legitimate towers in the area.” Encryption is essential Regardless of the encryption, or lack of it, employed by the transmission system (Wi-Fi, GSM, CDMA), email software, be it on a computer, smartphone or any portable device, should offer encryption of its own. For example, someone with her own domain may get her email from either the registrar that registered the domain or the company hosting her website. GoDaddy is a big player in this field and they offer instructions for iPhone users on how to send and receive encrypted email from their iPhones. But, iPad owners that follow other instructions from GoDaddy, will send email in the clear. Not only messages, but email passwords too are transmitted in plain text. Three protocols are used with email, POP and IMAP for reading, and SMTP for sending (typically someone reads email with either POP or IMAP). Each protocol comes in both a secure/encrypted version and an insecure edition. The secure versions employ the same SSL/TLS used by secure web pages and may be referred to as POPS, IMAPS and SSMTP, a naming standard familiar to anyone who has dealt with secure HTTPS web pages. The secure email protocols also connect using different ports. Ports are logical entry points on a server computer, in this case a computer running POP, IMAP or SMTP server software. The secure version of IMAP connects to the IMAP server using port 993. The secure version of POP connects to POP server software using port 995 and secure email is sent using either ports 465 or 587. With web pages, insecure HTTP uses port 80 and secure HTTPS uses port 443. Be aware, however, that what is encrypted by the secure email protocols is the connection between the email software on your computing device and the email server that it communicates with. For sending email, this means messages are encrypted between you and the SMTP server that actually sends your email. Oftentimes the SMTP server is provided by your ISP, but large companies and serious techies may run their own. What is not encrypted, however, is the transmission of the email message out from the SMTP server to the server computer that stores email for the recipient. This article is focused on wireless email however, and using SSMTP rather than SMTP insures that email traveling over the air is encrypted. To be sure of end-to-end encryption, the email message themselves need to be encrypted before they start their journey. The ability to send messages that are, themselves, encrypted is another topic altogether. Let me just say that an encrypted message can be sent using an encrypted protocol, and nothing says that both of these can’t be done through a VPN, adding yet a third layer of encryption. The classic issue with encrypting the actual messages is that both the sender and recipient need to use similar software and it can be difficult to set up initially. For most people these hurdles are too high. I recently attended a hacker conference where the guys that setup the wireless network gave a wrap-up presentation on the last day. In discussing how the network was used during the conference, they were surprised to find both POP and IMAP traffic. This elicited shock and awe from the attendees. How could anyone be so un-informed as to read insecure email during a hacker conference over a wireless network? It boggles the mind.   <a rel=”new tab” rel=”nofollow” onclick=”javascript:_gaq.push(['_trackPageview', '/outgoing/article_exit_link']);” href=”http://www.matriman.com/”>Matrimonial</a>   <a rel=”new tab” rel=”nofollow” onclick=”javascript:_gaq.push(['_trackPageview', '/outgoing/article_exit_link']);” href=”http://www.matriman.com/”>Matrimonial</a>