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)
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)
I am trying to block ALL traffic except when from ports 9100,22,23 to destination network 192.0.0.0 (my WAN): 2 networks 192.0.3.0 with static route to 192.0.0.0
Shouldn't this work?:
iptables -A INPUT -p tcp -d 192.0.0.0/24 --dport 22 -j ACCEPT
iptables -A INPUT -p tcp -d 192.0.0.0/24... (3 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 All,
I successfully configured a DEBIAN Lenny bridged firewall
using ebtables.
The bridged interface is br0.
The ethernet interface are eth0 & eth1 respectively.
All the traffic are transparently passing my firewall but i need to find & block temporarily the bandwidth abusers.
Can... (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 Experts,
I am receiving below error while trying to connect port 8080.
Could not open connection to the host, on port 8080 : connection refused.
iptables configuration
/etc/sysconfig/iptables
# Firewall configuration written by system-config-firewall
# Manual customization of... (1 Reply)
If I would like to know what connection , data , traffic in a network port ( eth0 ) , what can I do ?
ps. because I always found the network is very slow , so I would like what the network port is doing .
Thanks
Login ID ust3 is currently in read-only mode for multiple infractions. Creating... (0 Replies)
Hi Friends,
How to do port forwarding in AIX? We would like to re route traffic from port A to port B on AIX LPAR.
for example: my application is using 8080 port on LPAR and would like to use the 8081 instead of 8080. By default application was configured with 8080. But instead of changing... (2 Replies)
Discussion started by: System Admin 77
2 Replies
LEARN ABOUT CENTOS
firewalld.service
FIREWALLD.SERVICE(5) firewalld.service FIREWALLD.SERVICE(5)NAME
firewalld.service - firewalld service configuration files
SYNOPSIS
/etc/firewalld/services/service.xml
/usr/lib/firewalld/services/service.xml
DESCRIPTION
A firewalld service configuration file provides the information of a service entry for firewalld. The most important configuration options
are ports, modules and destination addresses.
This example configuration file shows the structure of an service configuration file:
<?xml version="1.0" encoding="utf-8"?>
<service>
<short>My Service</short>
<description>description</description>
<port port="137" protocol="tcp"/>
<module name="nf_conntrack_netbios_ns"/>
<destination ipv4="224.0.0.251" ipv6="ff02::fb"/>
</service>
OPTIONS
The config can contain these tags and attributes. Some of them are mandatory, others optional.
service
The mandatory service start and end tag defines the service. This tag can only be used once in a service configuration file. There are
optional attributes for services:
version="string"
To give the service a version.
short
Is an optional start and end tag and is used to give an icmptype a more readable name.
description
Is an optional start and end tag to have a description for a icmptype.
port
Is an optional empty-element tag and can be used several times to have more than one port entry. All attributes of a port entry are
mandatory:
port="string"
The port string can be a single port number or a port range portid-portid or also empty to match a protocol only.
protocol="string"
If a port is given, the protocol value can either be tcp or udp. If no port is given, it can be any protocol from /etc/protocols to
have a protocol match only.
module
Is an optional empty-element tag and can be used several times to enable more than one netfilter kernel helper for the service. A module
entry has exactly one attribute:
name="string"
Defines the name of the kernel netfilter helper as a string.
destination
Is an optional empty-element tag and can be used only once. The destination specifies the destination network as a network IP address
(optional with /mask), or a plain IP address. The use of hostnames is not recommended, because these will only be resolved at service
activation and transmitted to the kernel. For more information in this element, please have a look at --destination in iptables(8) and
ip6tables(8).
ipv4="address[/mask]"
The IPv4 destination address with optional mask.
ipv6="address[/mask]"
The IPv6 destination address with optional mask.
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.SERVICE(5)