[CentOS] faI2ban detecting and banning but nothing happens

På Fri, 26 Apr 2019 11:50:47 +0100
Gary Stainburn <gary.stainburn at ringways.co.uk>
skrev:
> On Friday 19 April 2019 16:15:32 Kenneth Porter wrote:
> > On 4/19/2019 5:30 AM, Gary Stainburn wrote:  
> > > I've followed one of the pages on line specifically for
> > > installing fail2ban on Centos 7 and all looks fine.  
> > 
> > Which page? It would help to see what they advised.
> > On Friday 19 April 2019 16:15:32 Kenneth Porter wrote:
> > On 4/19/2019 5:30 AM, Gary Stainburn wrote:  
> > > I've followed one of the pages on line specifically for installing
> > > fail2ban on Centos 7 and all looks fine.  
> >
> > Which page? It would help to see what they advised.  
> 
> I think I worked from two pages. One I believe was 
> 
> https://www.howtoforge.com/tutorial/how-to-install-fail2ban-on-centos/
> 
> I can't remember the other one. I have removed all of the manual
> amendments so am now basically set up as initially installed.
> 
> /var/log/fail2ban.log is showing that it's working:

I have seem similar odd behaviour with f2b with other filters. 
Try to uninstall the package
fail2ban-systemd
and stop and start fail2ban again.
This might change its behavior to the better.

  Allan.