[syslog-ng] Can't get basic syslog to work for my firewall logs?

[Damian Bell]

Have you disabled any other syslog servers that might be listening on UDP 514? Rsyslog, etc? (ps aux | grep syslog) Try (temporarily) disabling SELINUX and keep firewall turned off. See if you can start syslog-ng in the foreground and see what you get (syslog-ng –Fed)




Damian Bell
Infrastructure Engineer | Support | H Clarkson & Co Ltd

Email: Damian.Bell at clarksons.com<mailto:Damian.Bell at clarksons.com>


From: syslog-ng [mailto:syslog-ng-bounces at lists.balabit.hu] On Behalf Of Tim Tyler
Sent: 24 February 2017 15:07
To: syslog-ng at lists.balabit.hu
Subject: [syslog-ng] Can't get basic syslog to work for my firewall logs?

Syslog-ng experts.
  I am very new to syslog-ng.  I installed syslog-ng on a fresh Redhat 7.3 server.   It defaults working with internal logging.  So I configured my firewall to send syslog with facility set to log_user.  I turned on Wireshark on the syslog-ng server and observed the firewall sending traffic to the server on udp 514.

But the syslog server never created the directory structure and logs.  I disabled the redhat firewall just to eliminate it as a possibility.  Still no logging.  So I don’t know what I am doing wrong at this point. I don’t know if this is a permission problem or some other configuration issue.  I found someone that had posted a very basic syslog-ng configuration for firewalls.  So I copied It into a firewall.conf I put in conf.d.  Can anyone see what might be wrong with it?

####################
options {
        create_dirs(yes);
        owner(root);
        group(root);
        perm(0640);
        dir_owner(root);
        dir_group(root);
        dir_perm(0750);
};


##################################################
source s_udp {
        udp(port(514));
};

#Template for a new firewall in the firewalls.conf file
#Entries to be changed: NAMEOFTHEFIREWALL and IPOFTHEFIREWALL

##################################################
filter f_NAMEOFTHEFIREWALL {
        host("192.168.30.1");
};
destination d_NAMEOFTHEFIREWALL {
        file("/var/log/firewalls/PA/$YEAR/$MONTH/$YEAR-$MONTH-$DAY.PA.log");
};
log {
        source(s_udp);
        filter(f_NAMEOFTHEFIREWALL);
        destination(d_NAMEOFTHEFIREWALL);
};


Tim Tyler
Network Engineer
Beloit College


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