![]() Brian K West has described them as "evil" - which is not really an understatement if you've ever been burned by one. While ostensibly a SIP ALG is designed to enhance SIP and make the notoriously problematic NAT traversal issues easier to deal with, the simple fact of the matter is that most SIP ALG's are horribly broken. A more complete discussion can be found on WikiPedia and VoIP-info. ![]() ![]() An ALG (Application Layer Gateway) is a security component, commonly found in a router or firewall device, that is supposed to enhance the ability for certain protocols to traverse NAT.
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