Unable to access specific website/server
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28-06-2020 12:06 PM
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A weird problem that's cropped up for me in the last week or so - I can't connect to a specific site/server from my home broadband. Connecting from other places or from my mobile (with wifi disabled) works perfectly.
The site is www.juracid.co.uk - that plus a few others hosted on the same server seem to be unreachable (or reachable very intermittently) from my broadband connection.
Very similar to the problem posted here:
https://community.plus.net/t5/ADSL-Broadband/Unable-to-access-A-Specific-Website/td-p/1449675
I have tried changing DNS servers to public ones like 8.8.8.8, 8.8.4.4 or 1.1.1.1 etc. and it makes no difference.
I've tried it from every device in the house, no difference. As far as I can tell the rest of the internet works fine from the connection.
Nothing has changed in our networking setup - it was working fine, and then it wasn't.
It's been down and up (more down than up) for the last few days, maybe a week - example ping log attached, traceroute pasted below - although even when it's working, traceroute doesn't appear to resolve properly, I guess something is not playing ball.
[Non-working]
traceroute to juracid.co.uk (109.203.109.104), 64 hops max
1 192.168.1.1 0.282ms 0.263ms 0.243ms
2 * * *
3 * * *
4 195.166.143.136 42.632ms 20.618ms 20.881ms
5 195.99.125.130 21.130ms 20.673ms 21.112ms
6 194.72.16.98 21.025ms 58.477ms 20.663ms
7 * * *
8 109.234.203.245 22.590ms 23.154ms 22.853ms
9 77.111.212.79 22.825ms 23.133ms 22.373ms
10 77.111.212.13 26.785ms 36.432ms 26.142ms
11 77.111.212.95 59.281ms 40.980ms 35.333ms
12 77.111.217.13 25.828ms 26.350ms 26.556ms
13 * * *
14 * * *
15 * * *
16 * * *
17 * * *
18 * * *
19 * * *
20 * * *
21 * * *
22 * * *
23 * * *
24 * * *
25 * * *
26 * * *
27 * * *
28 * * *
29 * * *
30 * * *
31 * * *
32 * * *
33 * * *
34 * * *
35 * * *
36 * * *
37 * * *
38 * * *
39 * * *
40 * * *
41 * * *
42 * * *
43 * * *
44 * * *
45 * * *
46 * * *
47 * * *
48 * * *
49 * * *
50 * * *
51 * * *
52 * * *
53 * * *
54 * * *
55 * * *
56 * * *
57 * ^C
[Working]
traceroute -I -p 80 www.juracid.co.uk
traceroute to juracid.co.uk (109.203.109.104), 64 hops max
1 192.168.1.1 0.270ms 0.248ms 0.212ms
2 172.16.14.136 18.135ms 18.953ms 33.969ms
3 * * *
4 195.166.143.136 21.891ms 21.190ms 21.341ms
5 195.99.125.134 21.465ms 21.144ms 20.923ms
6 194.72.16.104 20.904ms 39.630ms 21.407ms
7 * * *
8 109.234.203.245 23.384ms 23.374ms 23.150ms
9 77.111.212.79 23.104ms 23.397ms 23.858ms
10 77.111.212.13 27.062ms 30.547ms 26.333ms
11 77.111.212.95 30.008ms 26.852ms 26.831ms
12 77.111.217.13 26.592ms 26.582ms 27.058ms
13 109.203.109.104 27.315ms 27.273ms 36.692ms
Fixed! Go to the fix.
29-06-2020 12:35 AM
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Now fixed - it was a bizarre conflict between Dokuwiki and mod_security on the server leading to it banning my IP when I edited posts.
Rule disabled, IP unblocked, all is well with the world.
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