Articles on Trending Technologies

Technical articles with clear explanations and examples

What is a Screening Routers in information security?

Ginni
Ginni
Updated on 07-Mar-2022 776 Views

The screening router firewall is called a network level or packet-filter firewall. Such a firewall works by screening incoming packets by protocol attributes. The protocol attributes screened can involve source or destination address, type of protocol, source or destination port, or multiple protocol-specific attributes.Screening routers are set up using rules to filter access using defined protocols or to and from predefined addresses, passing or rejecting an IP packet based on data included in the packet header.A screening router is an essential part of most firewalls. A screening router can be a commercial router or a host-based router with some sort ...

Read More

How does a packet filters work?

Ginni
Ginni
Updated on 07-Mar-2022 871 Views

Packet filtering is cheap to implement. It should be understood that a packet filtering device does not support the same level of security as an application or proxy firewall. All except the most trivial of IP networks is composed of IP subnets and include routers. Each router is a potential filtering point. Because the value of the router has been absorbed, more cost for packet filtering is not needed.Packet filtering is suitable where there are simple security requirements. The internal (private) networks of some organizations are not highly segmented. Highly sophisticated firewalls are not essential for isolating one element of ...

Read More

How to retrieve rows of a series object by regular expression in the pandas filter method?

Gireesha Devara
Gireesha Devara
Updated on 07-Mar-2022 305 Views

By using the regex parameter we can apply the regular expression to the filter() method and this helps to retrieve the rows of the series object. The basic working of series.filter() method in pandas series constructor is used to subset the rows of a series object based on the index labels.The parameter regex is used to define a search pattern (regular expression) that is used to retrieve the resultant rows.Example 1In this following example, we have created a series object using a list of integers and the index labels are created by using the pandas data range function.# importing pandas ...

Read More

What is Packet Filtering in information security?

Ginni
Ginni
Updated on 07-Mar-2022 1K+ Views

Packet filtering is controlling access to a network by inspecting the incoming and outgoing packets and letting them move or halting them depends on the IP address of the source and destination. Packet filtering is one technique for implementing security firewalls.Packet filtering is both a tool and a method that is a fundamental building structure of network security. It is a tool in that it is an instrument that aids in accomplishing a function. It is a technique because it is an approach of accomplishing a task.In the framework of a TCP/IP network, a packet filter watches every IP datagram, ...

Read More

What are the types of Proxy Server?

Ginni
Ginni
Updated on 07-Mar-2022 975 Views

There are various types of Proxy Server which are as follows −Forward Proxy Server − A forward proxy is a type of proxy server that generally passes requests from users in an internal network to the internet through a firewall.Forward proxies are configured to allow or deny the user's request to change through the firewall to create content on the Internet. If the proxy enable the user's request, it forwards it to the internet server through the firewall. The internet server sends its response to the proxy. The proxy sends this return back to the user.Public proxy − Public proxies ...

Read More

What is a Proxy Server in information security?

Ginni
Ginni
Updated on 07-Mar-2022 480 Views

A proxy server is an intermediary server that fetch data from an Internet source, including a webpage, on behalf of a user. They act as more data security boundaries securing users from malicious events on the internet.Proxy servers have some uses, and it is based on their configuration and type. Common uses contains facilitating anonymous Internet browsing, bypassing geoblocking, and regulating internet requests.Proxy servers enable users to browse the web more privately by changing your IP address and other recognizing data on the computer. Proxy servers maintain the personal data private, therefore the server does not understand who has create ...

Read More

What does the pandas series.filter() method do?

Gireesha Devara
Gireesha Devara
Updated on 07-Mar-2022 218 Views

The series.filter() method in the pandas series constructor is used to subset the rows of a series object based on the index labels. The filter method does not work for the content of the series object, it is only applied to the index labels of the series object.The method won’t raise an error if the specified label does not match to the series index labels.The parameters for the filter() method are items, like, regex, and axis. The items parameter takes a list-like object to access the set of rows from the given series object. The regex parameter is used to ...

Read More

Making a Palindrome pair in an array of words (or strings) in C++

Prateek Jangid
Prateek Jangid
Updated on 07-Mar-2022 612 Views

"Madam" or "racecar" are two words that read the same backward as forwards, called palindromes.If we are given a collection or list of strings, we have to write a C++ code to find out if that can join any two strings in the list together to form a palindrome or not. If any such pair of strings exist in the given list, we have to print "Yes, " else we have to print "No."In this tutorial, input will be an array of strings, and output will be a string value accordingly, for exampleInputlist[] = {"flat", "tea", "chair", "ptalf", "tea"}OutputYesThere is ...

Read More

What is DMZ in information security?

Ginni
Ginni
Updated on 07-Mar-2022 1K+ Views

DMZ stand for the Demilitarized Zone. It defines a host or network that acts as a secure and intermediate network or path among an organization's internal network and the external, or non-propriety, network. It is called a network perimeter or perimeter network.DMZ is generally implemented to secure an inside network from interaction with and exploitation and access by outside nodes and networks. DMZ can be a logical subnetwork, or a physical network acting as a secure bridge among an inside and outside network.A DMZ network has limited access to the inside network, and some communication is scanned on a firewall ...

Read More

How does the pandas series.expanding() method work?

Gireesha Devara
Gireesha Devara
Updated on 07-Mar-2022 2K+ Views

The series.expanding() method is one of the window methods of pandas and it Provides expanding transformations. And it returns a window subclassed for the particular operation.The parameters for this method are min_periods, center, axis, and method. The default value for the min_periods is 1 and it also takes an integer value. The center parameter takes a boolean value and the default one is False. In the same way, the default value for the axis parameter is 0, and for the method is ‘single’.Example 1In this following example, the series.expanding() method calculated the cumulative sum of the entire series object# importing ...

Read More
Showing 34711–34720 of 61,248 articles
Advertisements