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 DEBIAN
fwb_ipf
fwb_ipf(1) Firewall Builder fwb_ipf(1)NAME
fwb_ipf - Policy compiler for ipfilter
SYNOPSIS
fwb_ipf [-vVx] [-d wdir] [-o output.fw] [-i] -f data_file.xml object_name
DESCRIPTION
fwb_ipf is a firewall policy compiler component of Firewall Builder (see fwbuilder(1)). This compiler generates code for ipfilter. Compiler
reads objects definitions and firewall description from the data file specified with "-f" option and generates ipfilter configuration files
and firewall activation script.
All generated files have names that start with the name of the firewall object. Firewall activation script has extension ".fw" and is sim-
ple shell script that flushes current policy, loads new filter and nat rules and then activates ipfilter. IPFilter configuration file name
starts with the name of the firewall object, plus "-ipf.conf". NAT configuration file name also starts with the name of the firewall
object, plus "-nat.conf". For example, if firewall object has name "myfirewall", then compiler will create three files: "myfirewall.fw",
"myfirewall-pf.conf", "myfirewall-nat.conf".
The data file and the name of the firewall objects must be specified on the command line. Other command line parameters are optional.
OPTIONS -f FILE
Specify the name of the data file to be processed.
-o output.fw
Specify output file name
-d wdir
Specify working directory. Compiler creates firewall activation script and ipfilter configuration files in this directory. If
this parameter is missing, then all files will be placed in the current working directory.
-v Be verbose: compiler prints diagnostic messages when it works.
-V Print version number and quit.
-i When this option is present, the last argument on the command line is supposed to be firewall object ID rather than its name
-x Generate debugging information while working. This option is intended for debugging only and may produce lots of cryptic messages.
NOTES
Support for ipf returned in version 1.0.1 of Firewall Builder
Supported features:
o both ipf.conf and nat.conf files are generated
o negation in policy rules
o stateful inspection in individual rule can be turned off in rule options dialog. By default compiler adds "keep state" or "modulate
state" to each rule with action 'pass'
o rule options dialog provides a choice of icmp or tcp rst replies for rules with action "Reject"
o compiler adds flag "allow-opts" if match on ip options is needed
o compiler can generate rules matching on TCP flags
o compiler can generate script adding ip aliases for NAT rules using addresses that do not belong to any interface of the firewall
o compiler always adds rule "block quick all" at the very bottom of the script to ensure "block all by default" policy even if the
policy is empty.
o Address ranges in both policy and NAT
Features that are not supported (yet)
o negation in NAT
o custom services
Features that won't be supported (at least not anytime soon)
o policy routing
URL
Firewall Builder home page is located at the following URL: http://www.fwbuilder.org/
BUGS
Please report bugs using bug tracking system on SourceForge:
http://sourceforge.net/tracker/?group_id=5314&atid=105314
SEE ALSO fwbuilder(1), fwb_ipt(1), fwb_pf(1)FWB fwb_ipf(1)