Il fatto che non ti rispondano in ICMP non c'entra nulla con HTTP.
Se mai fai un test con wget -d
Codice:
wget -d www.mediaworld.it
DEBUG output created by Wget 1.13.4 on linux-gnu.
URI encoding = `UTF-8'
--2012-02-24 02:52:26-- http://www.mediaworld.it/
Resolving www.mediaworld.it (www.mediaworld.it)... 129.35.114.101
Caching www.mediaworld.it => 129.35.114.101
Connecting to www.mediaworld.it (www.mediaworld.it)|129.35.114.101|:80... connected.
Created socket 3.
Releasing 0x0000000000ef3690 (new refcount 1).
---request begin---
GET / HTTP/1.1
User-Agent: Wget/1.13.4 (linux-gnu)
Accept: */*
Host: www.mediaworld.it
Connection: Keep-Alive
---request end---
HTTP request sent, awaiting response...
---response begin---
HTTP/1.0 200 OK
Set-Cookie: ARPT=WJQRQWS10.150.100.100CKOKW; path=/
Date: Fri, 24 Feb 2012 01:51:19 GMT
Server: IBM_HTTP_Server
Content-Type: text/html
X-Cache: MISS from localhost
X-Cache-Lookup: MISS from localhost:3128
Via: 1.0 localhost (squid/3.1.6)
Connection: close
---response end---
200 OK
Stored cookie www.mediaworld.it -1 (ANY) / <session> <insecure> [expiry none] ARPT WJQRQWS10.150.100.100CKOKW
Registered socket 3 for persistent reuse.
Length: unspecified [text/html]
Saving to: `index.html.3'
[ <=> ] 13,707 --.-K/s in 0.04s
2012-02-24 02:52:26 (309 KB/s) - `index.html.3' saved [13707]