Linux – iproute2 Cheat Sheet

Overview iproute2 is the Linux networking toolkit that replaced net-tools (ifconfig, route, arp etc.) Old style network utilities like ifconfig and route are still there just for backwards compatibility and do not provide access to…
Linux File Permissions

Linux – Permissions

  In order to update and change file permissions, you can use the chmod command. The format of the command is as follows: [crayon-6876c25d22524703966692/] for each action   Changing Permissions VALUE MEANING rwx+ugo No…

Debian – How to disable snmpd ia_addr insert messages?

You have Debian and Ubuntu servers which runs snmpd service and are getting following message every 30 seconds within /var/log/syslog [crayon-6876c25d2290f557906034/] This problem is related with the log level start options of snmpd service [crayon-6876c25d22917181780451/] With…

CISCO CUBE SIP DEBUGS

How to capture SIP traffic on a router monitor capture [crayon-6876c25d22d1b936865654/]

How to Disable or Enable Disk Write Caching in Linux

ATA-Based Disks Check out whether disk caching is enabled on your disk or not: [crayon-6876c25d231a8708559127/] To disable write caching, you need to edit hdparm.conf using your favorite editor (e.g. gedit, vi). [crayon-6876c25d231b0910242825/] …

How to Delete All VSS Shadows and Orphaned Shadows

http://packetpushers.net

Network Operating Systems

Network Operating Systems This page is an attempt to maintain a list of all network operating systems (NOSs) and network-centric applications that that are available in the market today, in no particular order. Network Operating…

GDPR

GDPR GDPR effects any company that handles personal data of EU citizens so also your company for example: if you are planning to do marketing e-mail campaigns which includes European customers, you have to ask their approval for sending…

CISCO IOS and IOS-XE Call Routing

In Depth Explanation of Cisco IOS and IOS-XE Call Routing Source: https://www.cisco.com Updated:June 13, 2017 Document ID:211306 Contents Introduction Prerequisites Requirements Components…

Solid State Drives Technology Comparison – SLC, MLC, TLC NAND

SSDs (Solid State Drives) use NAND flash chips. Each of these chips contain millions of cells with limited number of write cycles. There are different types of NAND flash chips in use today with different characteristics as follows: SLC (Single…