Vulnerability Issue:
A flaw was found in the way BIND handled requests for TKEY DNS resource records. A remote attacker could use this flaw to make named (functioning as an authoritative DNS server or a DNS resolver) exit unexpectedly with an assertion failure via a specially crafted DNS request packet.
Enabling SSH KeepAlive
You can configure the ssh client to automatically send a protocol no-op code code every so many seconds so that the server won’t disconnect you. This is setting is sometimes referred to as Keep-Alive.
GHOST Vulnerability (glibc)
On January 27, 2015, the GHOST vulnerability was announced by Qualys. This vulnerability allows remote attackers to take complete control of a system by exploiting a buffer overflow bug in a glibc function GetHOST. This vulnerability should be considered serious and all affected servers should be patched immediately.
Make RHEL 6 FIPS 140-2 Compliant
ISSUE
- To configure Red Hat Enterprise Linux 6 to be compliant with the Federal Information Processing Standard (FIPS) Publication 140-2 several changes need to be made to ensure that accredited cryptographic modules are used.
Create a FTPS Server with vsftpd
Install vsftpd
The vsftpd server is available in CentOS’s default repositories. We can install it by typing:
sudo yum install vsftpd
The vsftpd server is now installed on our VPS. We can configure some connections options in the next section.
Generating a Certificate Signing Request (CSR)
To generate your CSR, you will need to log in to your server and use the OpenSSL software to generate a CSR and private key.
- Log in to your server, and enter the following command:
openssl req -nodes -newkey rsa:2048 -sha1 -keyout myserver.key -out server.csr
How to fix “Cannot setup NMI watchdog on CPUx” error on RHEL
When starting a RHEL Linux virtual machine, you see the message: Cannot setup NMI watchdog on CPU (2031297)
Symptoms
•When booting a RHEL virtual machine running with any hardware version, you see these messages echoed to the console:
How to install Samba package in CentOS 6.3 / RHEL
Install Samba package
Check and remove any previously installed samba package
[root@server ~]# rpm -qa | grep samba
[root@server ~]# yum list installed | grep samba
Install iftop on CentOS / RHEL
How to install and use iftop utility on Linux. This command listens to network traffic on a given interface (such as eth0 or eth1), and shows a table of current bandwidth usage by pairs of hosts.
Login as root, install iftop by the command below:
How to install mod_fcgid on RHEL or CentOS
Here are the steps to install mod_fcgid on RHEL/CentOS:
Step 1: To install mod_fcgid on CentOS / RHEL , first we will install EPEL repo .
#rpm -ivh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
