NAT
NAT
In computer networking, the process of network address translation (NAT, also known as network masquerading or IP-masquerading) involves re-writing the source and/or destination addresses of IP packets as they pass through a router or firewall. Most systems using NAT do so in order to enable multiple hosts on a private network to access the Internet using a single public IP address. According to specifications, routers should not act in this way, but many network administrators find NAT a convenient technique and use it widely. Nonetheless, NAT can introduce complications in communication between hosts.
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NAT Related Products
The Check Point Software Blade Architecture supports a complete and increasing selection of Software Blades, each delivering a modular security gateway or security management function. Because Software Blades are modular and moveable, Software Blades enable users to efficiently and quickly tailor Security Gateway and Management functionality to specific and changing security needs. New blades are quickly licensed as needed without the addition of new hardware.
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NAT Related Industry News
Block that Skype! Akonix Systems recently released a new appliance that lets IT departments impose some basic controls on the use of Skype. Akonix L7 Skype Manager is an offshoot of the company's L7 Enterprise instant messaging management system and its L7 Enforcer appliance for enforcing enterprise communications policies. According to Akonix vice president of marketing, Don Montgomery, the Skype manager answers a need articulated by company customers concerned about two widely separate issues......
[more] Vista's tunnelling protocol poses risk Windows Vista's implementation of a tunnelling protocol called Teredo can be added to the list of security problems posed by the operating system, according to recent research from Symantec Advanced Threat Research. Teredo is one of the protocols introduced into Vista to support IPv6, but it also has unforseen side-effects, Symantec said, among them that it could allow attackers to evade organisations' security measures. "Tunnelling methods can be use......
[more] Three Free, Easy Ways To Protect Your Network Whether the Conficker worm booms or fizzles, take it as a reminder to keep your networks safe. You could spend money on a security consultant--which isn't such a bad investment if helpful--but here are three free tricks to increase your network's security. Use OpenDNSUse OpenDNS Internet traffic gets routed through IP addresses; the text you type as a URL only sits on top of those numbers. Normally, when you type "pcworld.com," it gets ref......
[more] Hacker pierces hardware firewalls with web page On Tuesday, hacker Samy Kamkar demonstrated a way to identify a browser's geographical location by exploiting weaknesses in many WiFi routers. Now, he's back with a simple method to penetrate hardware firewalls using little more than some javascript embedded in a webpage. By luring victims to a malicious link, the attacker can access virtually any service on their machine, even when it's behind certain routers that automatically block it to the ou......
[more] ISPs could cut spam easily, says expert Two simple techniques could be used to strangle botnets, a security expert has claimed. First, block email port 25 by default. Second, tell users when they are spewing spam from compromised PCs. According to Trend Micro's CTO, Dave Rand, who is leading a campaign to reform the way ISPs approach the matter of botnets and spam, the two countries that adopted such techniques, The Netherlands and Turkey, have seen a huge reduction in the numbers of botnetted......
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