Sponsored Content
Top Forums Shell Programming and Scripting How to check the IP:PORT firewall uses? Post 303004017 by mohtashims on Monday 25th of September 2017 09:15:38 AM
Old 09-25-2017
Hammer & Screwdriver

1. I thought every running process including firewall process has to have a socket [IP Port] associated with it.

Not sure if firewall process was excluded from the rule, becoz the firewall process port does not show up no matter what.

This makes me believe that there can be processes like firewalld that can run without acquiring a port ? Interesting but some new concept to me.

2. Also, from @Chubler_XL's statement I understand that there is no way to remotely monitor the firewall like we monitor SMTP [port 25] or SSH [port 22].

Are both my understanding correct ?
 

10 More Discussions You Might Find Interesting

1. IP Networking

how can i check if port is busy or if someone is using it ?

Hello i have application that using ports , how can i check if the port im using is not captured by any applications? (1 Reply)
Discussion started by: umen
1 Replies

2. Solaris

How to open SSH port on firewall?

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)
Discussion started by: pjewett
3 Replies

3. Linux

can ping without firewall; no port 631

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)
Discussion started by: Sonshyne5
0 Replies

4. Linux

using firewall to block port

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)
Discussion started by: shantanuo
8 Replies

5. UNIX for Dummies Questions & Answers

How do you check whether a port currently being used?

Hi, Please help me out, how to check whether a port currently being used or not. is there any command which give the result? Thanks Rajesh (6 Replies)
Discussion started by: rajesh08
6 Replies

6. IP Networking

Is there any way to add an exception for a port in the firewall setting, permanently?

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)
Discussion started by: senrooy
1 Replies

7. Shell Programming and Scripting

Firewall Check Script

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)
Discussion started by: telnor
1 Replies

8. UNIX for Dummies Questions & Answers

Rsync port and firewall

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)
Discussion started by: karlochacon
1 Replies

9. Shell Programming and Scripting

Good way to check firewall port on Linux centos 7

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)
Discussion started by: mohtashims
1 Replies

10. Shell Programming and Scripting

Unable to open firewall port for external traffic.

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
APF(1)							      General Commands Manual							    APF(1)

NAME
apf - easy iptables based firewall system SYNOPSIS
apf DESCRIPTION
This manual page documents briefly the apf command. This manual page was written for the Debian distribution because the original program does not have a manual page. Advanced Policy Firewall (APF) is an iptables (netfilter) based firewall system designed around the essential needs of today's Internet deployed servers and the unique needs of custom deployed Linux installations. The configuration of APF is designed to be very informative and present the user with an easy to follow process, from top to bottom of the configuration file. The management of APF on a day-to-day basis is conducted from the command line with the 'apf' command, which includes detailed usage information and all the features one would expect from a current and forward thinking firewall solution. OPTIONS
apf follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below. -s|--start load all firewall rules -r|--restart stop (flush) & reload firewall rules -l|--list list all firewall rules -t|--status output firewall status log -e|--refresh refresh & resolve dns names in trust rules -a <HOST CMT|--allow <HOST COMMENT> add host (IP/FQDN) to allow_hosts.rules and immediately load new rule into firewall -d <HOST CMT|--deny <HOST COMMENT> add host (IP/FQDN) to deny_hosts.rules and immediately load new rule into firewall -u <HOST>|--remove <HOST> remove host from [glob]*_hosts.rules and immediately remove rule from firewall -o|--ovars output all configuration options COPYRIGHT
Copyright (C) 1999-2007, R-fx Networks <proj@r-fx.org> Copyright (C) 2007, Ryan MacDonald <ryan@r-fx.org> This program may be freely redistributed under the terms of the GNU GPL This manual page was written by Giuseppe Iuculano <giuseppe@iuculano.it>, for the Debian project (but may be used by others). August 17, 2008 APF(1)
All times are GMT -4. The time now is 04:58 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy