"Linux command" turns off firewall iptables

Firewall off

shutting down the firewall (Linux)

After their own experiments, found in Ubuntu service iptables can not be used.

At the same time, there is no iptables program in INIT.D, iptables program under/sbin.

Find out why

start and close iptables in Ubuntu

because there is no/etc/init.d/iptales file in Ubuntu, you cannot use commands such as service to start iptables, you need to use the modprobe command.

start Iptables

Modprobe Ip_tables

Close iptables (Close command is more complex than start)

Iptalbes-f

Iptables-x

Iptables-z

Iptables-p INPUT ACCEPT

Iptables-p OUTPUT ACCEPT

Iptables-p FORWARD ACCEPT

Modprobe-r Ip_tables

Execute the above command in turn to turn off iptables, otherwise you will be prompted Fatal:module Ip_tables is when you execute Modproble-r ip_tables.

Ping No workaround

In the ping time useful, when ping a host ping does not work, you can see if the host's firewall is still open

shutting down the firewall (Windows)

Windows: Search the firewall in the Control Panel, then tap to shut down the firewall.

Linux Mode

shutting down the firewall from the configuration menu is not working, simply do not install the firewall at the time of installation

To view the firewall status:
/etc/init.d/iptables status
To temporarily turn off the firewall:
/etc/init.d/iptables stop
Prevent firewalls from starting at system startup
/sbin/chkconfig--level 2345 iptables off
Restart Iptables:
/etc/init.d/iptables Restart

Off topic:

BT or mule slow not need to shut down the firewall, as long as the corresponding port open on it.
In the file
/etc/sysconfig/iptables
In the system's original configuration: The Rh-firewall-1-input rule chain adds a line like this:
-A rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 39764-j ACCEPT
-A rh-firewall-1-input-m state--state new-m udp-p UDP--dport 39764-j ACCEPT
If you find the original-j reject a class of statements, the above two sentences to put in front of it
Effective after reboot
Open: Chkconfig iptables on
OFF: chkconfig iptables off or/sbin/chkconfig--level 2345 iptables off
2) immediate effect, failure after reboot

Service Mode

Open: Service iptables start

Close: Service iptables stop

Iptables Way
To view the firewall status:
/etc/init.d/iptables status
To temporarily turn off the firewall:
/etc/init.d/iptables stop
Restart Iptables:

/etc/init.d/iptables restart

"Linux command" turns off firewall iptables