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how to prevent IPs access to my server

Discussion in 'General Discussion' started by preleaf, Sep 21, 2004.

  1. preleaf

    preleaf Well-Known Member

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    how to prevent IPs access to my server Can I prevent some IPs access to my server .Example :these IPs start 203.x.x.x or 205.x.x.x
    Please ,guide me step by step
     
  2. chirpy

    chirpy Well-Known Member

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    Go on, have a guess
    Again, if you search for the term "firewall" you'll get plenty of options, the most popular would be to install APF (an iptables based firewall).
     
  3. preleaf

    preleaf Well-Known Member

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    thank you so much .I will install APF.I f have any thing please help me
     
  4. ramprage

    ramprage Well-Known Member

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    Also consider using TCPwrappers to restrict user access.
     
  5. preleaf

    preleaf Well-Known Member

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    are you guide me more detail ?thanks !
     
  6. preleaf

    preleaf Well-Known Member

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    please ,guide me

    as follow the manual I am know in file allow_host.rules to allow host access to server as this :x.x.x.x/24.But how to permit these IPs start by 205 or 203 .So I can add this line:
    205.x.x.x/24 that i dont replace x.x.x cant I?Because I dont want to THESE IPs START 205 or 203
     
  7. linux-image

    linux-image Well-Known Member

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    iptables -A INPUT -s 205.0.0.0/24 -j DROP

    iptables -A INPUT -s 203.0.0.0/24 -j DROP

    that will do.
     
  8. preleaf

    preleaf Well-Known Member

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    what are file add 2 that lines ?allow_host.rules or conf.apf?where are add 2 lines ?thanks!
     
  9. linux-image

    linux-image Well-Known Member

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    just type that on your shell; and then

    /etc/rc.d/init.d/iptables save

    that will do.
     
  10. preleaf

    preleaf Well-Known Member

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    Hi linux-image,
    i typed :
    root@host[~]# iptables -A INPUT -s 205.0.0.0/24 -j DROP

    root@host[~]#iptables -A INPUT -s 203.0.0.0/24 -j DROP
    when permit IPs start 205 then these IPs cant login by root but it still access websites onmy server by browser
     
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