Problem: When you install Mod-security from source , by default log-rotate will not rotate those logs file as the path for log files are not defined logrotate configuration file by default. So if you want to allow logo-ratate to rotate your modsecurity log files. here is the steps:
1. Create a file modsecurity under /etc/logrotate.d
[...]
Problem :
How to configure openvpn to create multiple instances and listen more then 2 ports(1194,1195) ??
Solution:
you need more then 2 openvpn configuration file. example : openvpn.conf and openvpn1.conf
Now you need to define different port , Server Ip address,ifconfig-pool-persist, and log files
For openvpn.conf :
port 1194
proto tcp
dev tun
server 10.8.0.0 255.255.255.0
ifconfig-pool-persist ipp.txt
log [...]
Purpose:
###########################################
Develop a nagios script, which will monitor Linux memory uses.
###########################################
This script will check following :
#############################################
#1.If free memory is more then the defined memory as free: Status Done
#2.If System is using swap memory : Status:Done
##############################################
#!/bin/bash
#Version 1.0
#######################################
#Nagios scrept to check memory status##
#Commands : fre -m#####################
#######################################
#Status check for nagios script
STATE_OK=0
STATE_WARNING=1
STATE_CRITICAL=2
STATE_UNKNOWN=3
STATE_DEPENDENT=4
#Define All the variables for commands
declare -rx SCRIPT=${0##*/}
declare -rx [...]
Purpose : Some times Isp Or vps provider they block port 5666 Or for any reason if you want to configure nrpe to listen different port example 15666, follow as bellow:
On the Remote host(linux-vps) :
1. Change the Port number in : /etc/xinetd.d/nrpe
# default: on
# description: NRPE (Nagios Remote Plugin Executor)
service nrpe
{
[...]
Privileges mode password :
enable , configure t, enable secret test
How to lock down telnet port :
enable, configure t , line vty 0 15 , login , password test
How to lock down console port :
enable , configure t, line console 0 , login, password test
How to set logoin banner
enable, configure t, banner motd ) , Please [...]
Octal Permission:
0 — 000 All types of access are denied
1 –x 001 Execute access is allowed only
2 -w- 010 Write access is allowed only
3 -wx 011 Write and execute access are allowed
4 r– 100 Read access is allowed only
5 r-x 101 Read and execute access are allowed
6 rw- 110 Read and write access are allowed
7 [...]