To sto se ruter(i) ne odaziva(ju) na ICMP pakete, ne znaci i da ne prosledjuje saobracaj (TCP pa i ICMP)...
c827#ping
www.theplanet.com
Translating "
www.theplanet.com"...domain server (208.67.222.222) [OK]
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 70.87.6.117, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 184/188/192 ms
c827#telnet 70.87.6.117 80
Trying 70.87.6.117, 80 ... Open
get http HTTP/1.1 400 Bad Request
Content-Type: text/html
Date: Tue, 10 Jun 2008 23:07:11 GMT
Connection: close
Content-Length: 34
<h1>Bad Request (Invalid URL)</h1>
[Connection to 70.87.6.117 closed by foreign host]
"99% of your thought process is protecting your self-conceptions,
and 98% of that is wrong."