This script will backup all the major operating system files and save them within /var/tmp. It was also log the MD5 of the backup after each successful backup and rotate the backups to ensure you dont run into disk space issues. #!/sbin/sh ## ## SunOS Backup Script v1.3 ## ## Backups up the the following … Read more
Please note : This article is based on RHEL5 and grub. Below shows the 2 methods you can use to ensure serial connectivity when booting into single user mode. You may find without changing this setting your connection is lost just after Redhat starts booting.This configuration change can be via the grub.conf or via the … Read more
Issue Within the Smartview Monitor you may find that the device status is shown as “Problem”. Within Smartview Monitor you are unable to find any further details for what is causing the issue. Troubleshooting Steps This article isn’t a solution to the issue but more of a pointer to a stepping stone on finding what … Read more
What is the “Magical Jelly Bean Keyfinder” ? The Magical Jelly Bean Keyfinder is a freeware open source utility that retrieves your Product Key (cd key) used to install Windows from your registry. It allows you to print or save your keys for safekeeping. It works on Windows 7, 95, 98, ME, 2000, XP, … Read more
Issue When you try and run a yum update you receive the following error : root@localhost:/$ yum update Traceback (most recent call last): File “/usr/bin/yum”, line 4, in ? import yum File “/usr/lib/python2.4/site-packages/yum/__init__.py”, line 42, in ? import config File “/usr/lib/python2.4/site-packages/yum/config.py”, line 27, in ? from parser import ConfigPreProcessor File “/usr/lib/python2.4/site-packages/yum/parser.py”, line 3, in ? … Read more
Issue The initial SYN packets from your client to your server are translated by your Firewall into ACK packets. This in turn prevents the initial 3 way handshake establishing. Below shows an example, Inbound 15:32:19.546115 I 10.1.1.1.12345 > 192.168.1.1.1111: S 2292544025:2292544025(0) win 49640 <mss 1460,nop,wscale 0,nop,nop,sackOK> (DF) 15:32:22.924625 I 10.1.1.1.12345 > 192.168.1.1.1111: S 2292544025:2292544025(0) win … Read more
The Open Shortest Path First (OSPF) routing protocol is an Interior Gateway rotocol (IGP) intended to operate within a single Autonomous System (AS). A router running OSPF distributes its state information (such as usable interfaces and neighbor reachability) by periodically flooding link-state advertisements (LSAs)throughout the AS. Enabling OSPF on a VR set vrouter trust-vr router-id … Read more
Please make sure you backup your registry prior to making any changes to your registry. To create a system restore point go to “Run” and type ‘%SystemRoot%\system32\restore\rstrui.exe’ Below are 2 performance tweaks you can make on your windows system. In addition to the registry key below I have also include the command syntax so that … Read more
In this article we will be covering SSH port forwarding also known as SSH tunneling. As previously discussed in our previous article Proxing Web Traffic across a SSH Tunnel using SSH Dynamic Port Forwarding, SSH port forwarding (or tunneling) re-routes TCP/IP connections through an established SSH connection. Being encapsulated within SSH provides security benefits along … Read more
SSH port forwarding (or tunneling) re-routes TCP/IP connections through an established SSH connection. Being encapsulated within SSH provides security benefits along with the ability to route traffic through firewalls using just port 22 (SSH). In this example we will proxy our web traffic via our remote server across an established SSH connection. This is achieved … Read more