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  OSPF Multi-Area Configurationg We will use the following topology: Above we have R1 and R2 in area 0, the backbone area. Between R1 and R3, we will use area 1 and between R2/R4 we will use area 2. R3 and R4 have a loopback interface with an IP address that we will advertise in their area. Configuration Let’s start with all network commands to get OSPF up and running. The network command defines to which area each interface will belong.First, we will configure R1 and R2 for the backbone area: R1(config)# router ospf 1 R1(config-router)# network 192.168.12.0 0.0.0.255 area 0 R2(config)# router ospf 1 R2(config-router)# network 192.168.12.0 0.0.0.255 area 0 Let’s configure R1 and R3 for area 1: R1(config)# router ospf 1 R1(config-router)# network 192.168.13.0 0.0.0.255 area 1 R3(config)# router ospf 1 R3(config-router)# network 192.168.13.0 0.0.0.255 area 1 R3(config-router)# network 3.3.3.3 0.0.0.0 area 1 And last but not least, R2 and R4 for area 2: R2(config)# router ospf 1 ...

  Hot Standby Router Protocol (HSRP) #cybersecurity #coursera #quiz #solution #network HSRP 2 different networks configurations and verification Video Tutorial click here:   Hot Standby Router Protocol (HSRP) is a CISCO proprietary protocol, which provides redundancy for a local subnet. In HSRP, two or more routers gives an illusion of a virtual router. HSRP allows you to configure two or more routers as standby routers and only a single router as an active router at a time. All the routers in a single HSRP group shares a single MAC address and IP address, which acts as a default gateway to the local network. The  Active router  is responsible for forwarding the traffic. If it fails, the  Standby router  takes up all the responsibilities of the active router and forwards the traffic. Some important terms related to HSRP : Virtual IP :  IP address from local subnet is assigned as default gateway to all local hosts in the network. Virtual MAC address ...

 SSL Certificates: Make the Right Choice #cybersecurity #coursera #quiz #solution #network #python Increasingly sophisticated techniques are being used to hack into data today. So it has become extremely important to use even better ways to protect your customers’ data. SSL certification is one such way. This article looks at the different types of SSL certificates and how to choose one that suits your organisation. SSL certificates are an apt solution for securing data in transit. They create an automated mechanism to encrypt the transfer of data between the server and browser (or site and visitor). This encryption can only be decrypted by the intended system. So it discourages hackers from stealing data, and offers complete security against transit attacks on it. Along with securing communication, SSL certificates also build trust with customers and help you emerge as a credible business by displaying virtual trust icons like a padlock, HTTPS prefix, and a green address bar. So l...

Python Programming For Digital Forensics And Security Analysis #cybersecurity #coursera #quiz #solution #network #python One of the many uses of the versatile Python programming language is digital forensics and security analysis. This article covers various aspects such as socket programming, port scanning, geopositioning, and extracting data from sites such as Twitter. Python is one of the most powerful programming languages ​​used in key areas such as cloud computing, big data analysis, network forensics, mobile app development and web development. Python has been in use for over 20 years. Python code follows multiple programming paradigms, including imperative, functional, procedural, and object-oriented, to provide support. Nowadays, Python is widely used for a variety of high performance computing applications by a number of corporate giants including Microsoft, Google, Red Hat, IBM, Amazon and many others. Python is free and open source, and delivers the im...