One can open ports through iptables even if they have no idea about the commands, chains, etc.
First, take a look at /etc/sysconfig/iptables file. You should see a line something like this:
If you have opened the file in an editor, copy the line and paste it just below the above line. Now, you have to edit certain things like the port number and whether you are opening TCP or UDP port. Once done, save the file and restart iptables service. That's all.
Hi. I ran nmap on my server, and I get the following:
Starting Nmap 4.76 ( http://nmap.org ) at 2009-03-19 16:33 EDT
Interesting ports on -------- (-----):
Not shown: 997 closed ports
PORT STATE SERVICE
22/tcp open ssh
80/tcp open http
6881/tcp open bittorrent-tracker
The... (0 Replies)
Dear members,
My release is open Solaris b103
1- How to know the opening port in my system
2- How to open a specific port like port number 53
3- How to closed the specific port like port number 53
Your feedback highly appreciated (10 Replies)
Hi I am trying to use open ldap in centos.
I have installed all the packaged.
When I try to use slappasswd to encrypt the password, it does nothing.
I searched for the file and I found out that it is in /usr/sbin and that the file is link to slapd.
However slapd doesn't encrypt anything.
... (0 Replies)
Hi,
I would like to open a specific port for use with a bespoke application.
Before everyone points me to other threads - I read a few but couldn't find any specific to my problem.
Iptables / firewall is disabled
SELinux is also disabled
I would just like to assign this port to this... (0 Replies)
Hii Champs
I want to configure OS (Open source dialer on asterisk platform) for Centos.here is the detail :
We are going to use inbound outbound calling.We have Two servers with 2 separate network for inbound and outbound calling.using 6 mbps dedicated line with 2 mbps bakcup line.I want... (0 Replies)
Hi
We have one centos Server on Asterisk platform and using OS Open source dialer for dialing outbound connections.We are using eyebeam as a softphone for calling with Server ip 192.168.1.X.Today i found dialing issues with each client side phones.Not showing pause/resume button when browse... (0 Replies)
i want to kill a tcp connection by killing its pid
with netstat -an i got the tcp ip connection on port 5914
but when i type ps -a or ps-e there is not such process running on port 5914
is it possible that because i do not log on with proper user account i can not see that process running? (30 Replies)
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
LEARN ABOUT XFREE86
iptables-apply
IPTABLES-APPLY(8) iptables 1.6.1 IPTABLES-APPLY(8)NAME
iptables-apply - a safer way to update iptables remotely
SYNOPSIS
iptables-apply [-hV] [-t timeout] [-w savefile] {[rulesfile]|-c [runcmd]}
DESCRIPTION
iptables-apply will try to apply a new rulesfile (as output by iptables-save, read by iptables-restore) or run a command to configure
iptables and then prompt the user whether the changes are okay. If the new iptables rules cut the existing connection, the user will not be
able to answer affirmatively. In this case, the script rolls back to the previous working iptables rules after the timeout expires.
Successfully applied rules can also be written to savefile and later used to roll back to this state. This can be used to implement a store
last good configuration mechanism when experimenting with an iptables setup script: iptables-apply -w /etc/network/iptables.up.rules -c
/etc/network/iptables.up.run
When called as ip6tables-apply, the script will use ip6tables-save/-restore and IPv6 default values instead. Default value for rulesfile is
'/etc/network/iptables.up.rules'.
OPTIONS -t seconds, --timeout seconds
Sets the timeout in seconds after which the script will roll back to the previous ruleset (default: 10).
-w savefile, --write savefile
Specify the savefile where successfully applied rules will be written to (default if empty string is given:
/etc/network/iptables.up.rules).
-c runcmd, --command runcmd
Run command runcmd to configure iptables instead of applying a rulesfile (default: /etc/network/iptables.up.run).
-h, --help
Display usage information.
-V, --version
Display version information.
SEE ALSO iptables-restore(8), iptables-save(8), iptables(8).
LEGALESE
Original iptables-apply - Copyright 2006 Martin F. Krafft <madduck@madduck.net>. Version 1.1 - Copyright 2010 GW <gw.2010@tnode.com or
http://gw.tnode.com/>.
This manual page was written by Martin F. Krafft <madduck@madduck.net> and extended by GW <gw.2010@tnode.com or http://gw.tnode.com/>.
Permission is granted to copy, distribute and/or modify this document under the terms of the Artistic License 2.0.
iptables 1.6.1IPTABLES-APPLY(8)