SNMP works in the application layer (the highest level of OSI), and has been on the marketing since 1988 and has been evolving ever since. Where SNMP v1 was the original design, the latest version we have currently is now SMTP v3.
Nearly everyone uses online networking as part of their daily routine, most typically through WIFI or Ethernet connections.
We know that these connection methods are reliable; to achieve a hierarchy structure was needed to deal with different levels of data, so a model was invented that was later designed in the form of TCP-IP protocols stack. The original ISO was called an OSI (Open Systems Interconnection).
Ethereal was the original name of Wireshark. This open source packet analyser is a very powerful networking tool which is commonly used for troubleshooting within networks.
What is a Denial-of-Service (DoS) Attack & How can you Prevent it?
It’s a wonderful day at the office, all services and servers are working as they should and everything is running smoothly. Until the moment everything starts to get increasingly slower; services become unresponsive and the server’s resources are high, so high that it could crash the services entirely. Read More »
As we have looked at in earlier articles there are 2 types of routers: static and dynamic. As we have mentioned, a static router is manually added by administrators; the procedure for which can often be difficult in larger networks. That’s where dynamic routing protocols come in; they are responsible for updating this information automatically in the routing table of network attached devices. Read More »
As we can see from this previous article a router is the device responsible for routing packets between different networks. We have already covered that a router holds 2 types of routes in its routing table: Static and Dynamic. Read More »
The Domain Name System is an essential component of the Internet’s functionality and usability. The DNS is like a phonebook for the internet. Let’s say we know a person’s name but we do not know their phone number; We can however find it in the phonebook. A DNS provides the same service on the Internet.
When you need to connect a computer to another computer with a cable you use a device called a switch. When your computer is on the same network with other computers or devices they only need a switch to communicate with each other.
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Previously we looked at a MITM (Man-In-The-Middle) hacking technique called ARP spoofing; now we will look at what is known as DNS spoofing. DNS Spoofing is again like ARP spoofing; it’s a MITM attack that provides wrong (false) name resolving information about an IP. For example let’s say you have your bank website:
A domain name is the unique name for a website. For example, the domain name of Eltoma IT Services is “Eltoma-it.com”. Domain names work as an online address, which is used to access a websites. It’s what visitors will use to find you online and is a fundamental aspect of any website. When you register your domain name, it becomes unique and nobody else can register the same name. If you stop renewing your domain then somebody else can register the same name.
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