Cisco ISE (Identity Services Engine) 3.3 have new look and feel however underlying concept remains the same. Cisco ISE can be integrated with Active directory to authenticate users, domain joined machines for machine authentication. We can also pull groups created on active directory. The group can be used in access control policies to provide the … Read more
Microsegmentation is a network security technique which helps in dividing a data center into logically small cell containing a workload (A server). Security policies can be configured around a particular workload. With the help of micro-segmentation we allow only the required traffic needed by business and block rest of the traffic. Cisco have a Micro-segmentation … Read more
NTP (network time protocol) is a protocol which is used to synchronize time on computers, devices. In operating system like ubuntu we can use ntpq to synchronize the time. In this post we will understand in detailed output of ntpq command. NTP configuration is kept under file /etc/ntp.conf file. We will get below kind of … Read more
Output of ls command in linux can list content of a directory. It can provide all the files present in the directory as well as all the sub-directories. In Linux everything is represented as a file. A sample output of ls -lh is given below. In this we can see there are total 4 files … Read more
NetFlow is a network protocol developed by Cisco Systems that enables network administrators to collect and analyze network traffic data. It provides a method for capturing and recording detailed information about each network flow, including source and destination IP addresses, packet and byte counts, protocol types, and other relevant details. Cisco secure firewall can also … Read more
In an age dominated by digital information, the security and trustworthiness of data and files are of paramount concern. One pivotal technique in this realm is the calculation of file hashes, a process that serves as a digital guardian of data integrity. File hash calculation is a multifaceted tool with several critical functions. Firstly, it … Read more
Cronjob are the tasks which we want to run on a regular internal on a Linux machine. For example we can copy certain file in every 5 min from one directory to another directory or we can check if certain ip address was reachable from the system. We can schedule a cronjob using crontab which … Read more