. . , :
( , ..), ;
, ( , ..);
, .
SSL (SecureSocketsLayer ) , . , TCP/IP, . , . , , . , , .
SSL : SSL . SSL , . SSL SSL . SSL , SSL-.
SSL , 3 :
. , .
. .
. .
20
ICMP (InternetControlMessageProtocol) - ICMP , Internet. , . ICMP IP . ICMP DATA. , ICMP, :
SERVICE TYPE = 0;
PROTOCOL = 1 (ICMP);
TIME TO LIVE ;
SOURCE IP ADDRESS ICMP;
DESTINATION IP ADDRESS ICMP.
, , . IP.
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|
ICMP (Internet Control Message Protocol) .
, , :
o , ICMP.
o , ICMP.
o ping, ICMP.
o ..
ICMP IP ( ), .. .
ICMP . ICMP 8 32- . ICMP , . ICMP. TYPE ICMP , .
ICMP . (Request) (Reply). .
ICMP IP . - ICMP . . , "unused", . ( ).