Network technologies and trends:

Networking


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...

February 5, 2016  10:51 AM

Cisco intents to acquire Jasper Technologies

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Cisco, cloud, Internet of Things, iot, SaaS, Software as a Service

The era of technology is evolving and trends are moving towards a connected world, be it humans , machines, automobiles or household appliances, people are making efforts to connect them. So did the word "Internet of Things" (IoT) emerged. I could see Cisco is quite serious on this direction and...


February 1, 2016  6:37 AM

Oracle to stop Java browser plug-in

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
ACS, ASDM, Cisco, Java, Network security appliances, Oracle

Oracle recently announced their decision to stop its Java browser plug-in, well this is a great move from Oracle.  Their next Java Development Kit "JDK 9" will be shipped without a browser plug-in. These days most of the browsers stopped supporting Oracle Java plug-in for oblivious reasons like...


January 27, 2016  6:00 AM

How to configure OSPF Totally Stubby Area in Cisco Routers- Series 2?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Cisco, Cisco IOS, Cisco Routers, IP Routing, Loopback, OSPF, OSPF protocol, Routing, Routing Table

In my previous post we studied the topology and saw how Type 3, Type 4 and Type  LSA routes are installed in non 0 Area. Now lets configure Area 5...


January 26, 2016  5:16 AM

How to configure OSPF Totally Stubby Area in Cisco Routers- Series 1?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
areas of use, Cisco, Cisco Routers, Loopback, OSPF, OSPF protocol

In this series of posts lets configure OSPF Totally Stubby Area, but before proceeding further lets summarise the below topology

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January 25, 2016  4:45 AM

What is OSPF Totally Stubby Area?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Cisco IOS, Default route, IOS commands, OSPF, router

OSPF Totally Stubby Area basically filters out an information of a OSPF database purely based on the LSA types. An ABR  in a Totally Stubby Area  prevents LSA type 3, Type4 and Type 5  to be flooded in to a Totally Stub Area.  It replaces all these types of LSA with a default route. Basically...


January 24, 2016  5:33 AM

How to configure Stub Area in OSPF – Series 2?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Cisco, Cisco IOS, Dynamic Routing, IP routing protocols, Loopback, OSPF, OSPF protocol, Routing

In my previous post we studied the topology and saw how Type 5 LSA routes are installed in non 0 Area. Now lets configure Area 5 as a stub area. Its very easy to...


January 24, 2016  5:28 AM

How to configure Stub Area in OSPF – Series 1?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Loopback, LSA, OSPF, Routing protocols

In this series of posts lets configure OSPF Stub Area, but before proceeding further lets summarize the below topology

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January 22, 2016  9:41 PM

What is OSPF Stub Area?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
Default route, IOS commands, LSA, OSPF, OSPF protocol, router

We all know OSPF as routing protocol is one of most widely used IGP protocol, OSPF happens to be the most scalable IGP protocol. OSPF also happens to be one of complex protocols as it deals with various concepts and terminologies. Once such topic where people get confused is OSPF Area types. I...


January 21, 2016  5:08 AM

What is an error “Number of interfaces…not consistent” in ASA Firewall?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan
ASA, Cisco ASA, Cisco Firewall, Cisco IOS, IOS, Standby

If you are planning to do a hitless upgrade of a failover pair of ASA 5500 X Series firewall from 8.4(6) trail to 9.2(4) trail, you need to be little cautious. As you cannot do a direct upgrade, you need to rely on a interim release. Most people tend to try 9.1(2) as an interim upgrade, when you...


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