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This is the support site for Andrews & Arnold Ltd, a UK Internet provider. Information on these pages is generally for our customers but may be useful to others, enjoy!
(Add explanation to the NAT problem) |
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We supply various equipment. Usually it is equipment made by third parties, such as ZyXEL, Billion, etc. They will often include features such a NAT in the equipment, which you can use. NAT is not something that has a defined standard to which it works - it is a bodge, and so the quality of the NAT features in such equipment is not something we can guarantee. We supply them as is in that respect, and you are welcome to ask the manufacturers for details of what they do with NAT before you purchase (but don't expect a detailed reply). Our recommendation is, as always, not to use NAT at all. Using any sort of NAT, whatever the manufactuters claim, is likely to cause problems with some protocols, especially SIP.
We also supply FireBrick firewall/routers. These do allow basic IP and TCP/
===NAT is evil===
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