Network technologies and trends:

DNS

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February 13, 2016  8:40 AM

How does Palo Alto Networks Firewall examines an UDP Packet to identify an application?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
application, Application firewalls, DNS, firewall, Next Generation Networking, Packets, Palo Alto Networks, UDP

In the below example, a single DNS query packet is trying to query  the domain www.yasirirfan.com. This packet contains all the information needed by a Palo Alto Network Firewalls to identify an app,  by inspecting the below UDP packet it can determine

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February 8, 2016  1:04 PM

What is Palo Alto Networks App ID?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
application, DNS, firewall, Gartner, IPS

When it comes to treating an Application every vendor has a way of treating an App, most of the traditional firewalls treats Applications mostly on port numbers. For example traditional Firewalls treats DNS as port 53 application. And a rule  is configured in traditional firewall to allow port 53...


July 7, 2015  9:24 PM

What is VCP-NV – Series 2?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Auditing, Automation, DHCP, DNS, Firewalls, Load balancers, logging, Monitoring, NAT, Routers, Troubleshooting, VMware, VMware certifications, VPNs

When it comes for the VCP-NV certification preparations, one can certainly rely on VMware, as they have plenty of great resources. In may case I extensively used the following

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July 6, 2015  11:42 PM

What is VCP-NV – Series 1?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Auditing, Automation, DHCP, DNS, Firewalls, Load balancers, logging, Monitoring, NAT, Routers, Troubleshooting, VMware, VMware certifications, VPNs

Recently I tested my skills and knowledge on VMware Certifications, VMware Certified Professional – Network Virtualization also known as VCP-NV, which focuses on NSX products. The VCP-NV certification validates ability to install, configure, and administer NSX virtual networking...


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