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HTTP Articles
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What is HTTP Flooding? (Process, Types, How to Detect and Defend)
What is HTTP Flooding?HTTP flood is a sort of Distributed Denial of Service (DDoS) attack in which an attacker attacks a web server or application using seemingly valid HTTP GET or POST requests.HTTP flood assaults are volumetric attacks that frequently employ a botnet "zombie army"—a collection of Internet-connected computers that have been maliciously taken over, usually with the help of malware such as Trojan Horses.HTTP floods are a sophisticated Layer 7 assault that does not involve corrupted packets, spoofing, or reflection techniques and requires less bandwidth to bring down the targeted site or server than other attacks. As a result, ...
Read MoreWhat is the Point-to-Point Tunneling Protocol(PPTP)?
The Point-to-Point Tunnelling Protocol (PPTP) is a collection of communication protocols that control the safe implementation of virtual private networks (VPN), which enable businesses to extend their own private networks across the public Internet via "tunnels."A big corporation with offices worldwide can use PPTP to construct a large local area network (LAN) – basically a VPN - by using the architecture of a Wide Area Network (WAN), such as the network of a public Internet Service Provider (ISP) or telco. This is less expensive than setting out network infrastructure across such long distances.Through the construction of a VPN across TCP/IP-based ...
Read MoreWhat are the differences between Hub and Router?
Let us understand the concepts of Hub and Router before learning the differences between them.HubHubs work at the Physical layer and are used to link all the devices connected to it to form a single network. It is a common connection point All the devices connected to the hub can see the packets sent out by the hub.AdvantagesThe advantages of Hub are as follows −Hub is less expensive when compared to switches and routers.A Hub is used to internally connect between systems in a network.DisadvantagesThe disadvantages of Hub are as follows −A hub cannot accommodate more devices which make it ...
Read MoreWhat is the difference between letter, memo, e-mail, texting and formal writing?
Memo is also called a memorandum which is a concise and informal communication within an organization to inform about policies, procedures, or any other official message.Letter is a form of written communication addressed outside the organization. It contains a long formal message to inform someone of a specific topic. The tone of the letter depends on the relationship between sender and recipient.Email is another form of routine electronic communication within an organization or outside the organization. It requires an email account and internet connection.DifferencesThe major differences between Memo, letters, and Emails are as follows −MemoLetterEmailShort and PreciseLong and informativeInformal and ...
Read MoreWhat is the full form of SSL?
The full form of SSL is Secure Socket Layer which is considered to be a standard security technology used for establishing the encrypted link present among the server as well as clients which are mostly the web server and that of the browser or that of the mail server and clients.It is designed to make use of TCP to provide a consistent end-to-end secure service. Every browser might contain the capacity for interacting with that of the secure web server with the use of SSL protocol. With the use of the session keys, right after the handshaking has been done ...
Read MoreWhat is the maximum size of HTTP header values?
Most web servers have their own set of size limits on HTTP request headers. The HTTP Header values are restricted by server implementations. The following are the limits of some of the most popular web servers −Web ServerSize LimitApache8KNginx4K-8KIIS8K-16KTomcat8K – 48KIf the header size exceeds the above limit, the server returns 413 Entity Too Large error.
Read MoreHow to Create 301 Redirection on Nginx and Apache
In this article, we will learn how to redirect the URLs or Domain to another address. This can be done by using the HTTP Redirection. The URL redirection is a popular technique to point one domain address to another domain address which we can achieve on Apache and Nginx both.Redirecting to an another DomainWe might face a situation in which, we have an established web-site and we need to change the domain for the site. Here, we cannot do this by deleting the older domain since this may cause breakage and disappearance of contents on the old domain is possible ...
Read MoreLearn How to Use http stat to Find out Website's Performance
HTTP state is a Python3 script that visualizes web curl(1) statistics. This script is written in a single file without a dependency. This article explains about How to Use http stat to Find out a Website’s PerformanceInstalling httpstatThere are two ways to install httpstat on Ubuntu as shown below−Download the script directly.Through Python pip.Installing from ScriptTo install httpstat from direct script, use the following command−$wget https://raw.githubusercontent.com/reorx/httpstat/master/httpstat.pyThe sample output should be like this −--2016-12-19 11:27:18-- https://raw.githubusercontent.com/reorx/httpstat/master/httpstat.py Resolving raw.githubusercontent.com (raw.githubusercontent.com)... 151.101.100.133 Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|151.101.100.133|:443... connected. HTTP request sent, awaiting response... 200 OK Length: 10577 (10K) [text/plain] Saving to: ‘httpstat.py’ httpstat.py ...
Read MoreInstall and Configure Elasticsearch in Ubuntu -14.04
Elasticsearch is an open source search engine that uses Apache Lucene as its engine and released under an Apache license. Elastic search provides a platform for distributed search and analysis of data in real time. Elasticsearch is the most popular for its ease of use, powerful features. Using elastic search you can easily search, explore and analyze your data with an HTTP web interface.FeaturesSome of the general features of Elasticsearch are as follows:Elasticsearch is scalable up to hundreds of servers and petabytes of structured and unstructured data.Elasticsearch can be used as a replacement of MongoDB and RavenDB document store.Elasticsearch is ...
Read MoreHow to Install and Configure Squid Proxy Server on Linux
In this article, we will learn how to install and configure the Squid proxy server. A Squid proxy server is an open source and GPLD proxy with web cache. The Squid proxy server has various uses as we can speed up the web server by caching the repeated requests from the clients and we can use it for name server query. We can use it for looking at the network or a group of people for sharing the network resources.Squid proxy is a high-performance proxy caching server for Web clients which supports FTP, gopher, and HTTP data objects. Squid can ...
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