* Davy Gigan (davy@info.unicaen.fr) [011108 11:50]: > Osvaldo Mundim Junior writes: > > Hi, > > > > does anybody knowns what are TOS,PREC,TTL and RES of iptables`s log?? > > These are fields in IP packets : > > TOS stands for Type Of Service > PREC stands for precedence > > These one may be usefull to determine priority for packets, but i think > they're not very used for the moment. > > TTL stands for Time To Live > > Which is a little bit more used by traceroute by example or for > network load tests. > > RES may stands for Reset flag used to ... reset a connection, but i'm > note sure since this flag is often named RST flag, but thats the way i would > understand it. No, RES refers to "reserved" bits. the more familiar tcp flags are listed next: URG, ACK, PSH, RST, SYN, FIN AFAIK, only the 2 LSBs of RES are actually used today: for ECN. They are the CWR and ECNE bits. You can read all about it at http://www.google.com/search?q=rfc+ecn&btnI=1 (probably.) good times, -- Vineet http://www.anti-dmca.org Unauthorized use of this .sig may constitute violation of US law. echo Qba\'g gernq ba zr\! |tr 'a-zA-Z' 'n-za-mN-ZA-M'
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