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okram
n00b
Joined: 06 Aug 2002
Posts: 74
Location: Taipei, Taiwan
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 Posted: Thu May 22, 2003 2:30 am Post subject: Restricted access to forums? |
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For the past two days I've not been able to acces the forums from home (Taiwan). At first, I thought this was a temporary glitch, then I realised that there is no such problem when I ssh into my (UK) university shell account.
Does this mean that my home ISP has been blacklisted? If so, why? |
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pjp
Administrator
Joined: 16 Apr 2002
Posts: 20484
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| Posted: Thu May 22, 2003 2:41 am Post subject: |
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I've not heard of anything like that. Can you do a traceroute to the forums from home?
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Quis separabit? Quo animo? |
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okram
n00b
Joined: 06 Aug 2002
Posts: 74
Location: Taipei, Taiwan
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| Posted: Thu May 22, 2003 5:15 am Post subject: |
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Yes, I can traceroute forums.gentroo.org, and I can ping it too, but no access.
If there is no ip filtering going on, what could be the problem?
Especially given that www.gentoo.org works fine. |
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klieber
Bodhisattva
Joined: 17 Apr 2002
Posts: 3657
Location: San Francisco, CA
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| Posted: Thu May 22, 2003 4:08 pm Post subject: |
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| okram wrote: | | If there is no ip filtering going on, what could be the problem? |
Something between here and there is blocking port 80. What happens if you try to telnet to port 80?
Different server, different network, different part of the country. Totally unrelated. 
--kurt
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The problem with political jokes is that they get elected |
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masseya
Bodhisattva
Joined: 17 Apr 2002
Posts: 2602
Location: Baltimore, MD
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| Posted: Thu May 22, 2003 9:46 pm Post subject: |
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| klieber wrote: |
Different server, different network, different part of the country. Totally unrelated. |
Well, at least technically unrelated. I think there's some correlation between the content discussed on both servers, but sometimes it's hard to tell. 
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if i never try anything, i never learn anything..
if i never take a risk, i stay where i am.. |
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okram
n00b
Joined: 06 Aug 2002
Posts: 74
Location: Taipei, Taiwan
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| Posted: Fri May 23, 2003 8:30 am Post subject: |
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Too true
I think I misread the tracroute output yesterday. There is always one hop that can't be resolved, always the last but one. I don't know what this means or if it is a problem, but here is the output for your expert advice: | Code: |
$ traceroute forums.gentoo.org
traceroute to forums.gentoo.org (66.250.107.251), 30 hops max, 40 byte packets
1 218-166-96-254.HINET-IP.hinet.net (218.166.96.254) 59.553 ms 65.071 ms 62.773 ms
2 tp-s2-c6r11.router.hinet.net (168.95.82.122) 58.617 ms 56.990 ms 63.571 ms
3 tp-s2-c12r1.router.hinet.net (211.22.34.2) 63.535 ms 57.776 ms 64.400 ms
4 tp-cs11.hinet.net (211.22.33.11) 59.493 ms 59.422 ms 58.694 ms
5 211.22.33.165 (211.22.33.165) 212.046 ms 211.128 ms 211.234 ms
6 500.POS5-3.GW6.PAO1.ALTER.NET (208.214.140.81) 208.777 ms 203.806 ms 203.886 ms
7 0.so-0-2-0.XL2.PAO1.ALTER.NET (152.63.55.13) 210.425 ms 210.296 ms 212.066 ms
8 0.so-4-0-0.XL2.SAC1.ALTER.NET (152.63.53.246) 212.039 ms 207.917 ms 212.017 ms
9 POS7-0.BR5.SAC1.ALTER.NET (152.63.52.229) 212.038 ms 210.201 ms 212.053 ms
10 204.255.174.210 (204.255.174.210) 258.529 ms 256.096 ms 252.746 ms
11 p6-2.core01.sjc01.atlas.cogentco.com (154.54.2.229) 367.818 ms 380.011 ms 433.932 ms
12 p4-0.core01.sfo01.atlas.cogentco.com (66.28.4.93) 254.468 ms 252.760 ms 252.835 ms
13 p14-0.core01.ord01.atlas.cogentco.com (66.28.4.186) 252.005 ms 255.991 ms 250.385 ms
14 p15-0.core02.ord01.atlas.cogentco.com (66.28.4.62) 252.841 ms 252.740 ms 256.124 ms
15 p6-0.core02.jfk02.atlas.cogentco.com (66.28.4.85) 301.779 ms 295.127 ms 495.908 ms
16 p5-0.core02.jfk01.atlas.cogentco.com (66.28.4.170) 344.212 ms 384.048 ms 424.159 ms
17 g50.ba01.b001353-0.jfk01.atlas.cogentco.com (66.28.67.6) 280.562 ms 278.039 ms 280.563 ms
18 * * *
19 66.250.107.251 (66.250.107.251) 277.707 ms 282.127 ms 279.782 ms
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Hope you've got an idea. |
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klieber
Bodhisattva
Joined: 17 Apr 2002
Posts: 3657
Location: San Francisco, CA
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| Posted: Fri May 23, 2003 11:50 am Post subject: |
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| okram wrote: | | Code: |
19 66.250.107.251 (66.250.107.251) 277.707 ms 282.127 ms 279.782 ms |
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You're reaching the forums via traceroute -- that hop above confirms as much. Sounds like there's some sort of firewall between you and the forums server that is blocking port 80.
--kurt
_________________
The problem with political jokes is that they get elected |
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okram
n00b
Joined: 06 Aug 2002
Posts: 74
Location: Taipei, Taiwan
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| Posted: Sat May 24, 2003 8:02 am Post subject: |
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Well, it's working again, so that's a relief.
You say that there may be a firewall issue between home and forums. How come it would only affect some websites and then only sometimes? |
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klieber
Bodhisattva
Joined: 17 Apr 2002
Posts: 3657
Location: San Francisco, CA
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| Posted: Sat May 24, 2003 10:55 am Post subject: |
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| okram wrote: | | You say that there may be a firewall issue between home and forums. How come it would only affect some websites and then only sometimes? |
I have no idea. I just know that port 80 is open on the forums server.
--kurt
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The problem with political jokes is that they get elected |
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