HOWTO Internet Safety

How to be safe on the Internet

We believe in everyone having a safe environment to browse the internet and be protected against all malicious activity on the internet. In this journey, we constantly struggle in providing the best knowledge and education about the internet and its dark side to everyone associated with us. There are certain guidelines that we encourage people to follow. These guidelines are the culmination of personal experiences and general practices that the security community suggests to everyone out there. This is going to be a long article. but it’s necessary Continue reading

Connected to Internet? How safe is your Data really?

Each day that passes by, more and more business value and personal information (worldwide) are rapidly migrating into digital space on open and globally interconnected technology platforms. As it happens, cyber-attacks and breach in data security don’t look like they’re going to slow down.

Today, computer viruses and other malicious software are no longer written by hobbyist hackers – to seek fame and glory among peers. Most of them are written by professional criminals who are making millions with their attacks. ebay – the ecommerce and world biggest auction site famously fell prey to hackers in year 2014. Continue reading

How does a Firewall/UTM protect an Enterprise network against Internet threats?

Internet is the large network of computers. What threats lie out there in the open? Nobody can tell. The best we can do is protect ourselves by closing all doors of entry. A firewall does just that plus a little bit more to safeguard your network. Let us see how.

Where does a Firewall fit in your network?

The best location of a firewall is right next to the modem which connects to the Internet. The figure below shows a typical network (LAN) connected to the internet via the modem.

The same network when fitted with a Firewall product looks as shown in the figure below. All traffic getting into your LAN and getting out of your LAN to the Internet will pass through this Firewall. Thus, allowing it to filter in real-time and allow/block certain content based on specified rules.

 

How does it protect from Internet Hackers?

In networking terms, every incoming connection from the Internet has to have a PORT of entry. This PORT is nothing but a specific number using which a Hacker gains entry into the network. A typical Firewall would block all PORTs of entry for all traffic so that the doors are closed for the hacker to gain entry. It creates a fireproof wall around the LAN so that no unknown connection is given an entry.

 

How does it protect against Viruses?

Files downloaded from the Internet act as the transport medium for Viruses/Malware. A Firewall with inbuilt Antivirus scans for viruses each and every file that is being downloaded from the Internet. The file if infected is straight away rejected at the Firewall itself thereby protecting the LAN PC from infection.  Since the infected file never reaches the network computer there is no need of curing the file off the virus. Since the files are scanned in real-time, this feature, depending on the firewall hardware, may slow down  Internet speed to a certain extent. Compared to the cost of getting the Virus out and cleaning your network once its already in, the resulting slow down (if any) due to virus scan is negligible and more than welcome.