firewall SYN,ACK,FIN,RST,URG,PSH

[AntiTrust]

DD.

Studujem teraz
http://www.netfilter.org/documentation/HOWTO//packet-filtering-HOWTO-7.html

a nerozumiem tomuto:
--tcp-flags

     Followed by an optional `!', then two strings of flags, allows you 
to filter on specific TCP flags. The first string of flags is the mask: 
a list of flags you want to examine. The second string of flags tells 
which one(s) should be set. For example,

     This indicates that all flags should be examined (`ALL' is 
synonymous with `SYN,ACK,FIN,RST,URG,PSH'), but only SYN and ACK should 
be set. There is also an argument `NONE' meaning no flags.

Co sa tu snazi autor povedat?


BTW:
Nejaky link (radsej CZ/SK) vysvetlujuci SYN,ACK,FIN,RST,URG,PSH. Mam v 
tom totiz dost nejasno a napr. URG a PSH su mi uplne nezname.


TNX mucho

AT

-=x=-
Skontrolované antivírovým programom NOD32