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Cisco


February 28, 2018  3:26 AM

Cisco announces new version of CCIE SP Written and Lab Contents with version 4.1

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Access, CCIE, Cisco, Cisco IOS, Exam, Hardware, IOS, IPv4, IPv6, MPLS, QoS, router, Routing, service provider, Software, VPN

Recently Cisco updated the blueprint for the Cisco CCIE Service Provider Written & Lab exams, the new CCIE SP version 4.1 is only about 10% different than its preceding version 4.0. The exam format still remains the same, the CCIE SP written exam number also remains the same (400-201) and the...

February 5, 2018  10:19 PM

Cisco ASA Firewalls and Cisco FTDs can be – exploited remotely due to “Remote Code Execution and Denial of Service Vulnerability” updates

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Adaptive Security Device Manager, API, ASA, Cisco, Cisco ASA, Cisco Firewall, Code, Denial of Service, DOS, REMOTE, Software, SSL, VPN, vulnerability

In my previous post, I talked about the vulnerability in the Secure Sockets Layer (SSL) VPN functionality of the Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to cause a reload of the affected system or to remotely execute code. On January 29,...


February 2, 2018  12:40 AM

Cisco ASA Firewalls and Cisco FTDs can be exploited remotely due to “Remote Code Execution and Denial of Service Vulnerability”

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
ASA, Cisco, Cisco ASA, Cisco Firewall, Code, Denial of Service, DOS, REMOTE, Software, VPN, vulnerability

According to latest Cisco Security Advisories and Alerts update, Cisco ASA Firewalls, and Cisco FTDs can be exploited remotely provided WebVPN is configured on them. There is a vulnerability...


January 2, 2018  4:48 AM

A review for Cisco Press title “Cisco Firepower Threat Defense (FTD)” by Najmul Rajib

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
ASA, CCIE, CCNA, CCNP, Cisco, Cisco Press, DNS, firewall, Security, SSL

The recently released Cisco Press title “Cisco Firepower Threat Defense (FTD)” by Najmul Rajib is a great treat to read as he addresses most of the new concepts...


November 21, 2017  4:42 AM

Cisco Champions 2018 applications are open  

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Cisco, communities, social media, technologies, User groups

Cisco runs a program known as Cisco Champions, which purely runs on nominations, one can either nominate himself/ herself or someone whom they see as experts in Cisco Products and Technologies. Cisco expects the potential Cisco Champions to actively share their knowledge, expertise and thoughts in...


November 9, 2017  3:23 AM

What is “TCP Spurious Retransmission” ? And why does this occur for the FTP traffic passing through a Cisco ASA Firewall?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
ASA, Cisco, Cisco ASA, Filezilla, firewall, FTP, Network security, TCP

Recently we come across an issue where FTP  connection was not established between the client and the FTP server. The connection was passing through the Cisco ASA Firewall. Upon troubleshooting, we discovered 3-way TCP handshake was happening, however, once the login name and password entered to...


June 8, 2017  9:10 AM

Recertifying Cisco expert exams a new twist is here

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
CCIE, Certifications, Cisco

Being a CCIE/CCDE its self is a huge step one would take in his/her life, it's an informed decision one needs to take as maintaining a CCIE/CCDE  is not an easy task. Every two year one needs to recertify his or her CCIE/CCDE either by passing any CCIE written / CCDE written exam or by passing...


April 6, 2017  11:08 AM

Cisco have issues with certain software versions of ASA and Firepower appliances as it drops traffic after 213 days

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
ASA, Blog, bug, Cisco, console, Firewalls, HTTPS, Reboot, Security, SSH, vulnerabilities

Cisco released a field notice and also published a  blog about the latest


March 20, 2017  1:17 PM

How to re-image the Cisco Identity Services Engine (ISE) 2.2 on a Cisco SNS appliance from Cisco Integrated Management Controller?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Analytics, application, Cisco, Cisco security, DHCP, end point, End-user, Java, KVM, NAC, Security, Spoofing, threats, vulnerabilities

When it comes to re-imaging the Cisco Identity Services Engine (ISE) 2.2 on a Cisco SNS appliance , one can use the KVM console comes with Cisco Integrated Management Controller. If one wants to re-image the Cisco SNS-3415-K9  appliance  he/she could face huge challenges with the java especially...


March 9, 2017  7:36 AM

What’s new in Cisco Identity Services Engine (ISE) 2.2? – Series 3

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Analytics, application, Cisco, Cisco security, DHCP, end point, End-user, NAC, Security, Spoofing, threats, vulnerabilities

Cisco Identity Services Engine (ISE) 2.2 does offer lots of new features , in this post we will continue with those features which are focusing on stopping and containing the threats. These new features are quite helpful in reducing risk and contain threats by dynamically controlling network...


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