problems while surfing

  • Thread starter Thread starter Francesco Fucelli
  • Start date Start date
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Francesco Fucelli

Hi all,

Some web sites "appear" to be unreachable from internet browser (no matter
which, I tried IE 6.0 and Linux RedHat browser too), I say "appear" because
I can ping them, and they respond to HTTP requests (I've sniffed packets on
my LAN and I can see HTTP session with remote servers), but I can not
retrive "index.html" or the main web page. Here there is an example:

No. Time Source Destination Protocol Info
17 5.156575 checco.mshome.net www.virgilio.it TCP [TCP
ZeroWindow] 4745 > http [RST] Seq=0 Ack=0 Win=0 Len=0
18 5.166417 checco.mshome.net www.virgilio.it TCP 4748
http [SYN] Seq=0 Ack=0 Win=55168 Len=0
Click to expand...
21 5.239123 www.virgilio.it checco.mshome.net TCP http
4748 [SYN, ACK] Seq=0 Ack=0 Win=5840 Len=0
Click to expand...
22 5.239198 checco.mshome.net www.virgilio.it TCP 4748
http [ACK] Seq=0 Ack=1 Win=513920 Len=0
Click to expand...
23 5.239693 checco.mshome.net www.virgilio.it HTTP
GET/HTTP/1.1
24 5.339175 www.virgilio.it checco.mshome.net TCP http
4748 [ACK] Seq=1 Ack=461 Win=6432 Len=0
Click to expand...
25 5.349154 www.virgilio.it checco.mshome.net HTTP
HTTP/1.1 302 Found
26 5.349842 checco.mshome.net www.virgilio.it HTTP
GET/home/index.html HTTP/1.1
39 7.843784 checco.mshome.net www.virgilio.it HTTP [TCP
Retransmission] GET /home/index.html HTTP/1.1
40 7.938760 www.virgilio.it checco.mshome.net TCP [TCP
Previous segment lost] http > 4748 [ACK] Seq=3497 Ack=937 Win=7504 Len=0

....and the connection ends.
This happens only while surfing to certain web sites. Others are clearly
reachable and http page are normally retrived.
I really do not know where the problem is. I contacted my ISP and asked if
there are some filters on HTTP connection but the answer was obviously "no".
So, anyone has an explication?
Thanx,

Francesco
 
Same problem on an ME box.

--
mdh
Francesco Fucelli said:
Hi all,

Some web sites "appear" to be unreachable from internet browser (no matter
which, I tried IE 6.0 and Linux RedHat browser too), I say "appear" because
I can ping them, and they respond to HTTP requests (I've sniffed packets on
my LAN and I can see HTTP session with remote servers), but I can not
retrive "index.html" or the main web page. Here there is an example:

No. Time Source Destination Protocol Info
17 5.156575 checco.mshome.net www.virgilio.it TCP [TCP
ZeroWindow] 4745 > http [RST] Seq=0 Ack=0 Win=0 Len=0
18 5.166417 checco.mshome.net www.virgilio.it TCP 4748
http [SYN] Seq=0 Ack=0 Win=55168 Len=0
Click to expand...
21 5.239123 www.virgilio.it checco.mshome.net TCP http
4748 [SYN, ACK] Seq=0 Ack=0 Win=5840 Len=0
Click to expand...
22 5.239198 checco.mshome.net www.virgilio.it TCP 4748
http [ACK] Seq=0 Ack=1 Win=513920 Len=0
Click to expand...
23 5.239693 checco.mshome.net www.virgilio.it HTTP
GET/HTTP/1.1
24 5.339175 www.virgilio.it checco.mshome.net TCP http
4748 [ACK] Seq=1 Ack=461 Win=6432 Len=0
Click to expand...
25 5.349154 www.virgilio.it checco.mshome.net HTTP
HTTP/1.1 302 Found
26 5.349842 checco.mshome.net www.virgilio.it HTTP
GET/home/index.html HTTP/1.1
39 7.843784 checco.mshome.net www.virgilio.it HTTP [TCP
Retransmission] GET /home/index.html HTTP/1.1
40 7.938760 www.virgilio.it checco.mshome.net TCP [TCP
Previous segment lost] http > 4748 [ACK] Seq=3497 Ack=937 Win=7504 Len=0

...and the connection ends.
This happens only while surfing to certain web sites. Others are clearly
reachable and http page are normally retrived.
I really do not know where the problem is. I contacted my ISP and asked if
there are some filters on HTTP connection but the answer was obviously "no".
So, anyone has an explication?
Thanx,

Francesco
Click to expand...
 
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