Virtual Private Network

Viscosity is an OpenVPN client for Mac, providing a rich Cocoa graphical user interface for creating, editing, and controlling VPN connections. Viscosity provides a complete OpenVPN solution for…

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Cisco Router Selection With the constant evolution and change of the Cisco Router selection, it can be a tricky task to keep up-to-date. Do you know the current models of routers and more to the point do you know which Cisco router to choose? Like us and many other people you will have been stunned and confused when Cisco removed from it’s line up what was considered the standard for midsized networks the 2600 and 3600 series. It was not their robustness or capabilities that saw them on to the ebay listings of secondhand routers, in particularly the 3600 series which can still do just about everything its latest counterpart can do; What made these fall by the wayside was the limitations of the CPU and the inadequate RAM. With the growth of the Cisco IOS beyond what these could handle combined with the swell of the packet load of most networks these older routers can no-longer cut the mustard. Saying that, the Cisco 3600 series is still the router of choice for some people as they can be picked up very cheaply in the secondhand marketplace. The Cisco ISRs There is a Cisco ISR to suit everyone’s needs; from the 800 series for the small to medium-sized network right through large campus or high performance large network. These are more than just routers they now provide services like IPSec, VPN, firewalls, and VoIP. To help illustrate how to choose which router for your network type, the above diagram from Cisco demonstrates perfectly the routers available and their suitability. The rules for choosing the correct Cisco router is not set in stone, however there are some general pointers that should help. Home office or small office For constant VPN connections of up-to 10 home workers with good performance and reliability then look no further than the Cisco 800 Series. They have the Cisco IOS including IPS, VPN, VLAN, QoS, NAC, and Firewall. There are many routers in the range including wireless options and ISDN and DSL applications. Small Remote Office For networks that have up-to 25 or so users, the Cisco 1800 Series routers are the best choice. This router is ideal if all you need is a router to connect your office to the Internet, VPN, firewall, and wireless. Larger Remote Office If you require more performance and up scaling that the Cisco 1800 Series can offer, then you should look to the Cisco 2800 Series. Ideal for up-to around 50 users for office Internet connectivity, robust VPN access, with redundant power supply, Gig-E ports, NM expansion slots and Call Manager Express. Having the NM card slot lets you add things such as a 36-port switch with PoE, a DS3 ATM, a 24-port VoIP module, an intrusion detection module, a network analysis module, or a Cisco Unity Express voice mail module. Wonderful! Office of 100 Workers or More Cisco 3800 Series routers are similar to the 2800 Series in that there are a lot of HWIC and NM options for them. But what sets them apart from the 2800 Series is the sheer performance of the hardware and the number of HWIC and NM card that you can put into them. Large HQ Office or Campus For very large campus or service providers, the Catalyst 6500 and 7200/7300 Series platforms are for you. Cisco calls these “service aggregation platforms.” These are very high-performance networking platforms with a huge capacity for expansion.

There are many things to consider browsing safely and through an encrypted Virtual Private Network (VPN), not just to access porn or log onto Second Life as the opposite gender. It’s your financial information and profession that could be at danger. Anonymous Surfing is somewhat people should have the alternative to do without government or companies tracking their every click if they want to. The ability to use all the internet has to offer is great, but can you really feel safe if you are being watched? If you are being tracked at every click? It’s kind of creepy but ISP’s, advertising companies and a lot of organizations that steal and sell your all personal information for profit all can and do this. Consider what would happen if your boss came to know your home IP address and searched the Internet for your postings and online activities by IP address. If you want to Unblock VOIP of your office or school, you should buy VPN. I think people also have a right to privacy, and it is not evident from looking at your browser whether someone is monitoring you or not. There are millions of security cameras out there recording you everywhere you go in the offline world but people can usually see them and accept the loss of privacy for the trust that they are not going to get into any trouble or loose any personal information from them. The only solution to all these problems is anonymous browsing with Virtual Private Networking. VPN provides you a shield of encryption against spies and hackers; and an untraceable IP address for anonymous browsing. Apart from the security aspect a Virtual Private Network also lets you access restricted websites in your country or company. And unlike web proxies Virtual Private Networks are much faster and reliable.

For a successful VoIP rollout across an organization, several factors should be considered. The following precautions will help eliminate the most common VoIP security threats such as the distributed denial of service (DoS) attack, spams and frauds. During VoIP configuration/installation, it is important to establish security infrastructure including firewalls, VPNs, etc., to be capable of supporting the advanced security requirements for VoIP and be voice optimized at the same time. The VoIP security protocols dynamically allocate ports during call setup, requiring opening and closing of ports at the security gateway on demand. The protocol required the voice traffic inspection at the network and application level to address the challenges of VoIP protocols in Network Address Translation (NAT) environments. Similar to other services using network, there are critical security vulnerabilities being identified for VoIP. It is important to have the IP-PBX and IP Phone firmwares always updated and patched for the latest security vulnerabilities. Regular security assessments of your VoIP infrastructure provide identification and remediation of such security flaws to avoid attacks and prevent outages. Your IP-PBX is the heart of your VoIP infrastructure and it must be updated and patched as necessary. Since the VoIP gateways, servers and phone can be configured remotely, backdoor and front door access is sometimes enabled for ease of configuration. It is recommended to properly secure any remote access and configuration capabilities to individual VoIP devices to eliminate any security breaches. It is important to note that the endpoint credentials and administrator passwords on such devices are a very common avenue for attacks. In general, disable any insecure remote access features, such as FTP and Telnet, and disable local administration and management features. Internet Filter Bypass If your VoIP traffic goes over the Internet, use encryption technologies like IPsec tunnels to secure the VoIP traffic. While many of the VoIP protocols include capabilities for encryption and authentication, most of them are optional. It is essential to establish secure tunnels for carrying the VoIP information streams (call signaling, call control and media) between sites. Wherever possible, leverage VLANs to separate voice and data devices and traffic. This may have limited impact on security, however deploying VoIP devices on separate VLANs isolates data traffic from voice and signaling traffic and permits utilization of Quality of Service (QoS) capabilities. When creating passwords for accounts, follow secure password guidelines such as making password long, using a combination of numbers and alphabets, not using common names, or same as the account numbers.