STU for NAT

Tabuci Victor

Mayelana nalolu hlelo lokusebenza

Kunezindlela eziningana ekusebenziseni ikheli zenethiwekhi kanye translation port. Kwezinye yezifiso isicelo asebenzisa ulwazi ikheli le-IP, isicelo egijima ku engeyokuqala ku inethiwekhi masqueraded udinga ukuthola ikheli kwangaphandle Nat, ie ikheli zokuxhumana yayo ontanga ukubona, futhi, ngaphezu kwalokho, ngokuvamile kudingeka ukuba ahlole futhi ngononina uhlobo lokuhlela iyasebenza. Ngokuvamile lokhu kwenziwa ngenxa yokuthi wayefisa ukusetha i-ngqo ukuxhumana indlela (noma ukugcina izindleko ukuthatha idatha nge iseva noma ukuthuthukisa ukusebenza) phakathi amaklayenti ezimbili kokubili okumane ngemuva nat ehlukile.

Ngenxa yale njongo, lo ukudlula kuhlelo Simple UDP phezu nat (STUN) protocol yasungulwa (RFC 3489, March 2003). It oluthathwa ukuqaliswa NAT njengoba esigcwele Isigaxa Nat, (ikheli) kuvinjelwe-Isigaxa Nat, Isigaxa port-kuvinjelwe NAT noma Nat lesinesitfombe-sibuko esihlongozwayo indlela ukuhlola idivayisi ngokufanele. Nokho, lezi zinhlelo ziye kusukela ahoxisiwe kusukela isimo namazinga, njengoba izindlela ane- kahle ukuhlola kumadivayisi amaningi. izindlela ezintsha eziye elivamile RFC 5389 (October 2008) futhi esithi STUN manje imelela isihloko esisha of the sebhithi: Session ukudlula kuhlelo Izinsiza for Nat.