hosts.allow hosts.deny

 

[root@hadoop2 etc]# cat issue

CentOS release 6.8 (Final)

Kernel \r on an \m

[root@hadoop2 etc]# cat hosts.allow

#

# hosts.allow This file contains access rules which are used to

# allow or deny connections to network services that

# either use the tcp_wrappers library or that have been

# started through a tcp_wrappers-enabled xinetd.

#

# See 'man 5 hosts_options' and 'man 5 hosts_access'

# for information on rule syntax.

# See 'man tcpd' for information on tcp_wrappers

#

[root@hadoop2 etc]# cat hosts.deny

#

# hosts.deny This file contains access rules which are used to

# deny connections to network services that either use

# the tcp_wrappers library or that have been

# started through a tcp_wrappers-enabled xinetd.

#

# The rules in this file can also be set up in

# /etc/hosts.allow with a 'deny' option instead.

#

# See 'man 5 hosts_options' and 'man 5 hosts_access'

# for information on rule syntax.

# See 'man tcpd' for information on tcp_wrappers

#

[root@hadoop2 etc]# pwd

/etc

[root@hadoop2 etc]# uname -a

Linux hadoop2 2.6.32-642.6.2.el6.x86_64 #1 SMP Wed Oct 26 06:52:09 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

[root@hadoop2 etc]# cat /proc/version

Linux version 2.6.32-642.6.2.el6.x86_64 ([e-mail]) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-17) (GCC) ) #1 SMP Wed Oct 26 06:52:09 UTC 2016

[root@hadoop2 etc]# lsb_release -a

LSB Version: :base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch

Distributor ID: CentOS

Description: CentOS release 6.8 (Final)

Release: 6.8

Codename: Final

[root@hadoop2 etc]# lsb_release

LSB Version: :base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch

[root@hadoop2 etc]#