Is there a ban by mac address somewhere?

Discussion in 'General' started by vistree, Sep 1, 2015.

  1. vistree

    vistree Member

    Hi, I have a total strange problem:
    in my network are several computers. And two of them - normally used by one person - have problems accessing the server.
    One machine runs Xubuntu and the other is a tablet running Android.
    nslookup on the machines work. And sometimes I can also browse websites beeing on the ispconfig 3 server.
    But ... very often, there is the problem, that I can't open any domain hosted on this ispconfig server.
    At the same time the machine in question can open other websites without any problems.
    Also a telnet domain.com 80 does not work.
    I tried accessing the server (domains, telnet) from my MacBook at the same time the other users has the problems. Here, I find no problems. The same is for reaching the domains using a smartfone.
    ALL machines are within the same network and use the same public IP!!! And all machines go through the same router (a FritzBox).
    Anyone an idea?
     

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