I'm having a weird problem:
My os is MacOsX 10.8.5.
What I try to do is to go to phpMyAdmin website and download the latest version.
The problem is that the phpMyAdmin website won't load with Firefox, Chrome, Opera, Safari.
By that I mean that I tried all those browsers, trying to open the phpMyAdmin home page url:
http://www.phpmyadmin.net/home_page/index.php
and it would display the url in the browser, saying that it's waiting for data from phpmyadmin.net,
but it will never end, and the screen is blank meanwhile.
I only have this behaviour with php my admin. All other websites load just fine.
My first thought was: "Ha, php my admin website is down".
So I waited one day and started again: same results.
Then I thought: "A big website like php my admin can hardly be down more than 24 hours".
So I tried Tor browser, and it happens that Tor doesn't have any problem at all:
I could open the url, and download php my admin without any problem.
Do you know what the problem could be ?
I tried to ping phpmyadmin and it times out.
However, I can connect to phpmyadmin with telnet (I have to make about 3 tries to make a successful connection):
telnet phpmyadmin.net 80
Here is the result of traceroute:
~ > traceroute phpmyadmin.net
traceroute to phpmyadmin.net (216.34.181.97), 64 hops max, 52 byte packets
1 neufbox (192.168.1.1) 1.987 ms 0.812 ms 1.347 ms
2 22.85.118.80.rev.sfr.net (80.118.85.22) 34.543 ms 58.513 ms 31.762 ms
3 129.133.64.86.rev.sfr.net (86.64.133.129) 31.440 ms 40.668 ms 32.450 ms
4 138.133.64.86.rev.sfr.net (86.64.133.138) 31.962 ms 31.081 ms 32.290 ms
5 46.134.64.86.rev.sfr.net (86.64.134.46) 33.575 ms 33.774 ms 32.531 ms
6 146.133.64.86.rev.sfr.net (86.64.133.146) 30.776 ms 29.849 ms 31.237 ms
7 109.69.26.109.rev.sfr.net (109.26.69.109) 32.367 ms 39.959 ms 38.813 ms
8 222.224.65.86.rev.sfr.net (86.65.224.222) 36.595 ms 59.371 ms 48.434 ms
9 te0-4-0-7.mag21.par01.atlas.cogentco.com (149.6.160.197) 46.350 ms 37.786 ms *
10 be2040.mpd21.par01.atlas.cogentco.com (154.54.78.37) 35.291 ms
be2038.ccr21.par01.atlas.cogentco.com (154.54.74.253) 55.418 ms
be2040.mpd21.par01.atlas.cogentco.com (154.54.78.37) 37.133 ms
11 be2274.mpd22.lon13.atlas.cogentco.com (130.117.50.97) 42.603 ms
be2272.ccr22.lon13.atlas.cogentco.com (130.117.49.121) 45.106 ms
be2273.mpd21.lon13.atlas.cogentco.com (130.117.50.93) 50.270 ms
12 be2315.ccr22.lon01.atlas.cogentco.com (154.54.73.110) 43.596 ms
be2314.ccr21.lon01.atlas.cogentco.com (154.54.72.254) 44.053 ms
be2317.ccr22.lon01.atlas.cogentco.com (154.54.73.178) 44.042 ms
13 be2329.ccr21.lon02.atlas.cogentco.com (130.117.49.90) 45.464 ms
be2328.ccr21.lon02.atlas.cogentco.com (130.117.49.86) 43.905 ms
be2329.ccr21.lon02.atlas.cogentco.com (130.117.49.90) 48.909 ms
14 savvis.lon02.atlas.cogentco.com (130.117.14.58) 44.558 ms 43.364 ms 61.481 ms
15 cr2-te-0-1-0-1.uk1.savvis.net (206.28.100.29) 47.944 ms 67.810 ms 46.757 ms
16 cr1-te-0-6-0-0.chd.savvis.net (204.70.198.118) 139.522 ms 138.708 ms *
17 hr1-te-12-0-1.elkgrovech3.savvis.net (204.70.198.73) 183.807 ms 206.154 ms *
18 * * *
19 * 64.27.160.194 (64.27.160.194) 159.363 ms *
20 * * *
21 * * *
As for web filters, there is no parental control filter applied.
I tried curl:
I was never able to get a result using:
curl http://www.phpmyadmin.net
However, I did have a response, trying 3 times, asking for headers only:
curl -i http://www.phpmyadmin.net
I tried to access the website using telnet, there is a response but no body!!:
~ > telnet phpmyadmin.net 80
Trying 216.34.181.97...
Connected to phpmyadmin.net.
Escape character is '^]'.
GET / HTTP/1.1
Host: phpmyadmin.net
HTTP/1.1 302 Found
Server: Apache/2.2.15 (CentOS)
Vary: Host
Location: http://www.phpmyadmin.net/home_page/index.php
Cache-Control: max-age=172800
Expires: Fri, 25 Apr 2014 06:10:22 GMT
Access-Control-Allow-Origin: *
Content-Type: text/html; charset=utf-8
Content-Length: 0
Date: Wed, 23 Apr 2014 06:10:22 GMT
X-Varnish: 423165287
Age: 0
Via: 1.1 varnish
Connection: keep-alive
Connection closed by foreign host.
~ >
Best Answer
So finally, as suggested in comments, I tried to lower the MTU settings.
Using the technique described in this post, https://superuser.com/questions/413285/os-x-failure-in-path-maximum-transmission-unit-pmtu-black-hole-router-detectio
I was only able to lower MTU to 1280, so I did that, and then I could access phpmyadmin.net via a browser.
However, I have restablish MTU to 1500 and it stills work, so I don't know what that was, but now it's working anyway.