On 03/08/2016 09:43 AM, James Hogarth wrote: > On 8 Mar 2016 07:36, "anax" <anax at ayni.com> wrote: >> >> Hi >> strange behaviour of iptables on a centos 7.0 machine: >> The following rule is in the iptables of said machine: >> >> [root at myserver ~]# iptables -L -v -n --line-numbers |grep 175\. >> 9 9 456 DROP all -- * * 175.44.0.0/16 > 0.0.0.0/0 >> [root at myserver ~]# >> >> The corresponding enty in /etc/sysconfig/iptables looks like: >> >> [root at myserver ~]# grep 175 /etc/sysconfig/iptables >> -A INPUT -s 175.44.0.0/16 -j DROP >> [root at myserver ~]# >> >> The rule must be there since ages, because it has number 9 out of 76 > similar rules. >> >> Today, on the same machine (I rechecked it to make sure not to confound > machines), I see the following extract of the ftplog: >> >> <snip> >> 175.44.4.127 2915 >> 175.44.26.128 2021 >> 175.44.26.138 1322 >> 175.44.6.186 1290 >> 175.44.24.88 1219 >> 175.44.4.199 1212 >> </snip> >> >> saying that from this IP addresse there have been this many connections > to the ftp server on that machine during the last two days, which means > that the iptables haven't dropped the connection to the machine. As far as > I know, the ftp server is behind the iptables. I also checked to see in man > iptables, wheather the IP address is represented correctly. >> >> What im I missing? >> > > Please provide the full iptables listing as a snippet from one section is > not useful. > > Keep in mind iptables does not go by the most specific entry but rather the > first matching rule hit. > > If there are any rules prior to this drop that would permit the traffic > then of course the traffic would be permitted. > > Also 7.0? Please get that system updated asap as you are missing many > important (and higher) issues being fixed. > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos > Hi James Thanks very much for your answer. the full iptables list is in my reply to John. But you are correct, I must update the system. This may fix the isssue. suomi