The Firewall isn't a service that listens on a particular port so netstat will not be able to identify if it is running like it can for other services (like apache).
You could use firewall-cmd to enquire on the firewall status like this:
Hi,
So that potential responders will have an idea of what they're dealing with let me say that while I am a UNIX newbie I have been in IT for over 10 years.
We have several SUN boxes running ver 5 of the OS that have been sitting dormant for some time as they were part of a now defunct... (3 Replies)
Well, since I wrote the below, I've learned a little more about Samba, and got them to at least acknowledge each other. Still can't use Gaurd dog. Still cant print from one to the other.
I'm learning I'm learning
I recently installed mepis 7 on both my laptop and laptop. (I came... (0 Replies)
Hi,
I will like to allow access to the mysql port (3306) to certain IP address. All other IP's should be automatically blocked. What is the best way to do this? (8 Replies)
Hello,
I want to add a port in the firewall exception list so that my application can be accessed over network even if firewall is disabled. I am using iptables command to add exception.
The problem is, after setting the rule if I change the firewall setting i.e. on/off then it is overwriting... (1 Reply)
Hello,
I made a following script that check every 5 minutes to check firewall is running or not, if firewall down that raise an alert only once, but following script generate an alert every 5 minutes according to cronjob:
FILE="/var/log/fwstatus"
CHK="/tmp/fwstatus"
service... (1 Reply)
hi guys
I doing some collocation for a customer, customer requested to use other port for ssh not the default one. OK no problem
and customer will be using rsync to sync backups among other things
I know we have to open port let's say port 5999 for ssh since we are using that one now but I... (1 Reply)
Hi,
I need to know what kind of firewall settings does the linux box have? Is port 25 blocked in any way?
Linux techx 3.10.0-514.10.2.el7.x86_64 #1 SMP Fri Mar 3 00:04:05 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
I'm coming from this thread. (1 Reply)
Below is what i did to open the firewall port on
# sudo firewall-cmd --zone=public --add-port=27012/tcp --permanent
Warning: ALREADY_ENABLED: 27012:tcp
success
# sudo firewall-cmd --reload
success
# firewall-cmd --list-all
public
target: default
icmp-block-inversion: no
... (10 Replies)
Discussion started by: mohtashims
10 Replies
LEARN ABOUT CENTOS
firewalld.conf
FIREWALLD.CONF(5) firewalld.conf FIREWALLD.CONF(5)NAME
firewalld.conf - firewalld configuration file
SYNOPSIS
/etc/firewalld/firewalld.conf
DESCRIPTION
firewalld.conf is loaded by firewalld during the initialization process. The file contains the basic configuration options for firewalld.
OPTIONS
These are the options that can be set in the config file:
DefaultZone
This sets the default zone for connections or interfaces if the zone is not selected or specified by NetworkManager, initscripts or
command line tool. The default zone is public.
MinimalMark
For some firewall settings several rules are needed in different tables to be able to handle packets in the correct way. To achieve
that these packets are marked using the MARK target iptables(8) and ip6tables(8). With the MinimalMark option a block of marks can be
reserved for private use; only marks over this value are used. The default MinimalMark value is 100.
CleanupOnExit
If firewalld stops, it cleans up all firewall rules. Setting this option to no or false leaves the current firewall rules untouched.
The default value is yes or true.
Lockdown
If this option is enabled, firewall changes with the D-Bus interface will be limited to applications that are listed in the lockdown
whitelist (see firewalld.lockdownwhitelist(5)). The default value is no or false.
SEE ALSO firewall-applet(1), firewalld(1), firewall-cmd(1), firewall-config(1), firewalld.conf(5), firewalld.direct(5), firewalld.icmptype(5),
firewalld.lockdown-whitelist(5), firewall-offline-cmd(1), firewalld.richlanguage(5), firewalld.service(5), firewalld.zone(5),
firewalld.zones(5)NOTES
firewalld home page at fedorahosted.org:
http://fedorahosted.org/firewalld/
More documentation with examples:
http://fedoraproject.org/wiki/FirewallD
AUTHORS
Thomas Woerner <twoerner@redhat.com>
Developer
Jiri Popelka <jpopelka@redhat.com>
Developer
firewalld 0.3.9 FIREWALLD.CONF(5)