Groups > comp.os.linux.networking > #4866

Blocking IP addresses with iptables

From	John Smith <12345@whatismyemailaddress.xyz>
Newsgroups	comp.os.linux.networking
Subject	Blocking IP addresses with iptables
Date	2021-04-01 19:32 +0000
Organization	Aioe.org NNTP Server
Message-ID	<s4574u$1blp$1@gioia.aioe.org> (permalink)

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	I have the following iptables rule:

	iptables -A INPUT -p tcp -s 11.12.22/19 --dport 1234 -i eth0 -j 
DROP

With this rule, what IP addresses will be blocked when trying to 
establish a TCP connection on port 1234?

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Blocking IP addresses with iptables John Smith <12345@whatismyemailaddress.xyz> - 2021-04-01 19:32 +0000
  Re: Blocking IP addresses with iptables John Smith <12345@whatismyemailaddress.xyz> - 2021-04-01 19:38 +0000
    Re: Blocking IP addresses with iptables Allodoxaphobia <trepidation@example.net> - 2021-04-02 12:58 +0000
  Re: Blocking IP addresses with iptables "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2021-04-02 01:38 -0400
    Re: Blocking IP addresses with iptables "Carlos E.R." <robin_listas@es.invalid> - 2021-04-02 14:49 +0200
      Re: Blocking IP addresses with iptables "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2021-04-02 13:14 -0400
        Re: Blocking IP addresses with iptables "Carlos E.R." <robin_listas@es.invalid> - 2021-04-02 22:42 +0200
          Re: Blocking IP addresses with iptables "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2021-04-03 02:16 -0400
            Re: Blocking IP addresses with iptables "Carlos E.R." <robin_listas@es.invalid> - 2021-04-03 22:39 +0200
              Re: Blocking IP addresses with iptables "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2021-04-03 18:02 -0400
  Re: Blocking IP addresses with iptables Marc Haber <mh+usenetspam1118@zugschl.us> - 2021-04-02 21:47 +0200
    Re: Blocking IP addresses with iptables Jorgen Grahn <grahn+nntp@snipabacken.se> - 2021-04-05 14:36 +0000
      Re: Blocking IP addresses with iptables Marc Haber <mh+usenetspam1118@zugschl.us> - 2021-04-05 20:02 +0200

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