What is a transit VPC and what does it solve – if you have multiple VPC in a single account or multiple accounts in one region – the only way you can communicate with each other was by doing VPC peering and it was not possible to have...
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December 17, 2016 Hamza
Cloud
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On this tutorial I am going to troubleshoot a packet that is being dropped by the firewall. There are two ways you can do this using the Cisco ASA Firewall ASDM using the Cisco Command line You can use the Cisco ASDM to do packet trace which will...
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December 11, 2016 Hamza
Security
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If you are running into switches being unresponsive and kicking users out that you may be running into a memory leak issue or memory spiking due to some fault that is causing the switch to cause memory spike. you can always run the “sh logging” command to see what...
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December 9, 2016 Hamza
Networking
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How to fix error message “loopback error detected on 3850 Switches when you plug in an ethernet cable, this most likely happens when it is a circuit that is provided by the internet carrier and the cable is going to the modem when the ethernet cable is plugged...
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December 3, 2016 Hamza
Networking
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ICMP is a useful in many cases to troubleshoot connectivity – Cisco ASA has a build in packet-tracer to help you alleviate the issue below is the command that is used to simulate ICMP connectivity test thru the Cisco ASA firewall – In the below screenshot we are...
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November 29, 2016 Hamza
Security
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Cisco Router is controlled thru three management Planes What is Management Plane – The management plane manages traffic that is sent to the Cisco IOS device and is made up of applications and protocols like SSH What is Control Plane – The control plane of a network device processes...
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November 28, 2016 Hamza
Security
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AWS inspector is tool that is agent based and runs on the EC2 instances and requires a role that will have access to the instances in you r environment. AWS inspector checks the application against vulnerabilities and best practices. Once it has been enabled on an instance you...
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November 28, 2016 Hamza
Security
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Cisco Identity Service Engine Problem: Windows 8 and Windows 10 operating systems are not able to authenticate to ISE 1.3 when doing EAP chaining and fail computer name lookups in the Active Directory This is still valid today for Windows 10 all versions. this is valid for machine...
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November 28, 2016 Hamza
Security
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Commvault Console can be installed locally for Remote backup managements – here are the steps to configure the Commvault Console step by step On the root of the Commvault Comserv – there is setup folder on the following path where it has all the setup files – you...
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November 27, 2016 Hamza
Backup and Storage
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IPsec VPN tunnels are used to connect to two network over internet and making it secure with Ipsec 1 or 2. First we will need to configure the ISAKMP policies Authentication method is used to enure the identity of the Ipsec peers Encryption method is used to encrypt...
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November 23, 2016 Hamza
Security
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