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I can't access certain websites neither from my macbook nor from my iphone when connected to my Wifi. The same website can be opened from another windows computer connected to the same Wifi.

This is what happens when I try to ping it:

PING ilpost.it (151.1.175.113): 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
Request timeout for icmp_seq 2
...

And when I try to traceroute it:

host-001:~ j$ traceroute www.ilpost.it
traceroute to ilpost.it (151.1.175.113), 64 hops max, 52 byte packets
 1  vodafonedslrouter (192.168.1.1)  2.965 ms  0.743 ms  0.745 ms
 2  * 2.96.54.77.rev.vodafone.pt (77.54.96.2)  12.076 ms  10.871 ms
 3  77.41.30.213.rev.vodafone.pt (213.30.41.77)  14.145 ms  10.693 ms  11.960 ms
 4  85.205.11.49 (85.205.11.49)  9.658 ms  8.946 ms  9.085 ms
 5  85.205.13.105 (85.205.13.105)  57.497 ms  57.621 ms  48.080 ms
 6  188.111.129.17 (188.111.129.17)  49.483 ms  51.338 ms  48.852 ms
 7  85.205.25.174 (85.205.25.174)  47.891 ms  49.219 ms  47.821 ms
 8  * * *
 9  * * *
10  * * *
11  * * *

I've flushed my DNS cache but nothing changed.

This is quite dramatic as it seems to depend on 85.205.25.174 hop and don't know how to avoid it.

Any suggestions?

I add that 3 days ago everything worked fine. Then it has stopped.

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migrated from serverfault.com Sep 28 '12 at 11:59

This question came from our site for system and network administrators.

    
can you run a ping -6 and force it to use ipv6, see if that routes around it also its not depending on the 85.205.25.174 as there is a response, its the next one that is a problem –  David McGowan Sep 28 '12 at 18:59

1 Answer 1

I don't think your problem is related to the network or routing here. The server ilpost.it (151.1.175.113) isn't configured to answer on ICMP, so the ping output is totally normal. The traceroute output doesn't give any hints here either, 85.205.25.174 is a hop in Vodafone's network, and it just means the following hop isn't configured to answer on ICMP.

Now, to narrow down the problem, you can try pinging 151.1.175.1, which should be a host near the destination, and if this works, my guess would be that that your browser or some sort of firewall on your devices/network is the cause here. Try emptying the browser cache, and check if there is any security software present.

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