DenyHosts: Unblocking an IP address on Ubuntu Server

For best practice to hardening servers we typically install denyhosts to protect our servers. However, sometimes we get accidentally blocked out from our IP address. When we tried removing  blocked IP from /etc/hosts.deny, but it did blocked it again quickly. It appears that DenyHosts keeps track of the attempts somewhere on disk or memory. How do we remove own IP address from Deny Hosts?

Simply removing your IP from /etc/hosts.deny does not work since DenyHosts keeps track of the attempts in the /var/lib/denyhosts/ directory. In order to remove your IP address you will need to do the following.

Install and configure SNMP on Ubuntu Linux Server

This guide describe how-to install and configure SNMP on Ubuntu for Monitoring tools like Zenoss, Cacti, Nagios, Op5 etc

1.Installation

root@server:~# sudo apt-get install snmpd

Reading package lists... Done

Building dependency tree      

Reading state information... Done

The following packages were automatically installed and are no longer required:

  libmpich1.0gf libdc1394-22 genisoimage linux-headers-2.6.27-7 libgfortran2

  dvd+rw-tools linux-headers-2.6.27-7-generic libcarp-clan-perl libxml-xql-perl libparse-yapp-perl

  rdate python-xml localechooser-data gcc-4.2-base libimage-size-perl libdebconfclient0 libvisual-0.4-0

  libmyth-python perlmagick libvisual-0.4-plugins libavdevice52

List Of Service Providers & Warranty for IT Brands

 

BRAND	Contacts	Email / Website
ASUS, NETGEAR, LEADTEK	NA	care@rptechindia.com
GIGABYTE [ACCEL FFRONTLINE]	1800-425-4945	info@accelfrontline.in
MSI [Aforeserve]	18001022126	msisupport@aforeserve.co.in
ASROCK [DIGICARE]	NA	ASROCK_INDIA@asrock.com.tw
CORSAIR[KAIZEN INFOSERVE]	1800-425-5464	indiaservice@corsair.com
APC	1800-425-4272
BENQ	1800-419-9979
WESTERN DIGITAL	1800-200-5789
SEAGATE[ACCEL FRONTLINE]	1800-425-4535	india_cso@accelfrontline.in
SAMSUNG	1800-3000-8282	http://www.samsung.com/in/info/contactus.html
HIS / Seasonic / Forsa / Avermedia / Deepcool / Corepad / EVGA / Gskill	+91-9831022600	support@overclockerszone.com
AMD [Accel frontline]	022-67282000	amdcare@accelfrontline.in
INTEL [DIGICARE]	022-23804015 / 16	rma.mumbai@smartlink.co.in
TVS Keyboards	1800 200 5123	consumercare@tvs-e.in
Sapphire Desktop Graphics / ZOTAC		support@aditagroup.com
Sapphire Professional Graphics / XFX	+91 23823332	www.technologyandgadgets.com
Kingston RAM/SSD	1860-233-4515	services_india@kingston.com
Antec	1800-22-1988	rma@abacusperipherals.com