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I tried persuading my ISP to change his config on the main ISP DNS server but I just got a solution to use the public ip of the main ISP ...
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  1. #11
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    I tried persuading my ISP to change his config on the main ISP DNS server but I just got a solution to use the public ip of the main ISP DNS server which really increases the lookup time of domains and doesn't work for me at all.

    My last question: Should it work this way and the problem is on my side (some config wrong on my web server) or is it the ISPs fault?

  2. #12
    Linux Engineer Kloschüssel's Avatar
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    I tried persuading my ISP to change his config on the main ISP DNS server
    If I were your ISP, I would roll on the floor laughing after your call.

    My last question: Should it work this way and the problem is on my side (some config wrong on my web server) or is it the ISPs fault?
    If it's your firewall that causes problems, it's your responsibility.

    To me it looks like a messed up firewall configuration, but feel free to call back with the information that nslookup and traceroute spits out when you try them from a lan-client, a remote host (i.e. from at home) and your firewall for each the domain name and the ip address.

  3. #13
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    Oh yeah, funny indeed Was my ISP actually that suggested I create my own server and pommel every mail and domain through it instead of his machine, but he probably regrets that idea right now

    The main problem here is that the ISP says the domains are working locally and that I changed something in my apache configuration (probably virtual domains) and thats why it's not working. But he leaves it at that and I can't figure out what's actually broken as from the outside it works just fine.

    Here are the lookups:

    LAN

    Code:
    root@ns:~# nslookup www.branyadvere.sk
    Server:		192.168.77.1
    Address:	192.168.77.1#53
    
    Non-authoritative answer:
    Name:	www.branyadvere.sk
    Address: 194.1.130.117
    Code:
    server.exshop.sk> traceroute www.branyadvere.sk
    traceroute to www.branyadvere.sk (194.1.130.117), 30 hops max, 38 byte packets
     1  192.168.77.1 (192.168.77.1)  1.789 ms  0.884 ms  6.901 ms
     2  192.168.15.1 (192.168.15.1)  2.248 ms  2.110 ms  4.037 ms
     3  192.168.0.1 (192.168.0.1)  15.514 ms  2.664 ms  8.212 ms
     4  194.1.130.33 (194.1.130.33)  9.742 ms  4.828 ms  7.606 ms
     5  * * *
     6  * * *
     7  * * *
     8  ns.andreansky.eu (194.1.130.117)  12.950 ms  19.659 ms  12.346 ms
    FROM THE OUTSIDE

    Code:
    nslookup www.branyadvere.sk
    Server:		147.251.215.1
    Address:	147.251.215.1#53
    
    Non-authoritative answer:
    Name:	www.branyadvere.sk
    Address: 194.1.130.117
    Code:
    traceroute www.branyadvere.sk
    traceroute to www.branyadvere.sk (194.1.130.117), 30 hops max, 60 byte packets
     1  ns.sks1.muni.cz (147.251.215.1)  0.178 ms  0.175 ms  0.167 ms
     2  econ.bb10.muni.cz (147.251.242.113)  4.218 ms  4.467 ms  4.637 ms
     3  c-ics.bb10.muni.cz (147.251.244.173)  0.559 ms  0.556 ms  0.600 ms
     4  r98-bm.cesnet.cz (195.178.87.1)  0.817 ms  0.991 ms  1.034 ms
     5  195.113.179.166 (195.113.179.166)  2.451 ms  2.499 ms  2.589 ms
     6  Napri-gw.six.sk (192.108.148.65)  3.737 ms  3.227 ms  3.839 ms
     7  88.212.1.237 (88.212.1.237)  2.677 ms  2.691 ms  2.895 ms
     8  88.212.1.234 (88.212.1.234)  9.350 ms  9.615 ms  9.523 ms
     9  squid.erixline.sk (194.1.130.37)  9.738 ms  9.219 ms  9.309 ms
    10  * * *
    11  * * *
    12  194.1.130.117 (194.1.130.117)  12.018 ms  11.511 ms  14.768 ms
    IPTABLES are empty

    Code:
    iptables -L
    Chain INPUT (policy ACCEPT)
    target     prot opt source               destination         
    
    Chain FORWARD (policy ACCEPT)
    target     prot opt source               destination         
    
    Chain OUTPUT (policy ACCEPT)
    target     prot opt source               destination

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