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For Branch switches, please check Comparison of Cisco Switches: (2960 vs 3560), (Cisco 3560 X vs 3650 vs 3750-X vs 3850) Cisco 2900, 3900, and 4000 (4300 and 4400) Series…
1. Basic Commands man ： manualls ：List Directory Contentspwd ：print working directorycd ：change directorymkdir ：Make directorycp ：Copymv ：Movefind and locate and whereiskill passwd ：Passwordmd5sum ：Compute and Check MD5 Message Digesthistory…
Worked on a used cisco switch 2960 which has been configured password. Following steps have been recorded how to get into recover mode. 1. Connect Console Cable Cisco provides a…
Junos Space is a comprehensive network management solution that simplifies and automates management of Juniper’s switching, routing, and security devices. To those security administrator who like command line, they will…
IPsec is a framework of open standards that provides data confidentiality, data integrity, and data authentication among participating peers. It provides these security services at the IP layer; it uses…
Digital certificates as an authentication method for IPSec VPNs is becoming increasingly popular for both remote access and site-to-site deployments. The use of digital certificates requires some form of PKI…
Pre-shared keys and digital certificates are two primary authentication methods in IKE that can be used in the context of IPSec VPN deployments. Digital certificates provide a means to digitally…
For Branch Routers, please check Comparison of Cisco Integrated Services Routers: (1800,2800,3800) vs (1900,2900,3900) vs 4000 Cisco 2960 vs 3560 Switch 2960 series switches are L2 only switches. Meaning that…
This ‘ACLs on Switches’ diagram shows PACL, VACL and RACL location and traffic direction on switch. It is clear and easy understanding. The following explanation is from Security Features on…
I have been using a Usb-to-Serial cable for many years without problem at windows xp and windows 7 system. Just recently upgraded to windows 10 , the cable does not…
I listed some of my favorite and useful Internet websites and network tools in previous post which has been used in my daily IT life. There are some network security…
I am getting the “This Connection Is Untrusted” message in Firefox for all security website using https even when I go to the Mozilla support page. Any secure site is…