- What is CC attack?
- Is SSL and TLS the same?
- What are the 7 layers of OSI?
- What layer is SMTP?
- What is Layer 3 load balancing?
- What is a layer 4 load balancer?
- What are application layer attacks?
- Is ICMP a Layer 3?
- What is network layer attacks?
- What layer is DNS?
- What is the difference between layer 4 and layer 7?
- Is SSL a Layer 7?
- What is the strongest DDoS method?
- What is another name for a layer 7 load balancer?
- How SSL works step by step?
- What is a Layer 7 attack?
- What are the Layer 7 protocols?
- What is a layer 4 attack?
What is CC attack?
Challenge Collapsar (CC) attack is a type of DDoS attack that sends forged HTTP requests to some target web server frequently.
These requests often require complicated time-consuming caculations or database operations, in order to exhaust the resource of the target web server..
Is SSL and TLS the same?
Transport Layer Security (TLS) is the successor protocol to SSL. TLS is an improved version of SSL. It works in much the same way as the SSL, using encryption to protect the transfer of data and information. The two terms are often used interchangeably in the industry although SSL is still widely used.
What are the 7 layers of OSI?
In the OSI reference model, the communications between a computing system are split into seven different abstraction layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
What layer is SMTP?
application layerSMTP is part of the application layer of the TCP/IP protocol. Using a process called “store and forward,” SMTP moves your email on and across networks. It works closely with something called the Mail Transfer Agent (MTA) to send your communication to the right computer and email inbox.
What is Layer 3 load balancing?
Load balancing is to distribute a large number of requests to different servers, to ease the burden of a single server. … L3/L4 Load Balancer: traffic is routed by IP address and port. L3 is network layer (IP). L4 is session layer (TCP).
What is a layer 4 load balancer?
Layer 4 load balancing, operating at the transport level, manages traffic based on network information such as application ports and protocols without visibility into the actual content of messages. This is an effective approach for simple packet-level load balancing.
What are application layer attacks?
Application layer DDoS attacks are designed to attack the application itself, focusing on specific vulnerabilities or issues, resulting in the application not being able to deliver content to the user. …
Is ICMP a Layer 3?
ICMP. ICMP is the Internet Control Message Protocol, a helper protocol that helps Layer 3 (IP, see note). ICMP is used to troubleshoot and report error conditions: Without ICMP to help, IP would fail when faced with routing loops, ports, hosts, or networks that are down, etc.
What is network layer attacks?
The focus of these attacks is to destroy the performance of the wireless networks. These attacks can block completely the services of the wireless network. … The attacks of the network layer are: IP spoofing, hijacking, smurf, wormhole, blackhole, sybil and sinkhole.
What layer is DNS?
Application LayerIn OSI stack terms, DNS runs in parallel to HTTP in the Application Layer (layer 7). DNS is in effect an application that is invoked to help out the HTTP application, and therefore does not sit “below” HTTP in the OSI stack. DNS itself also makes use of UDP and more rarely TCP, both of which in turn use IP.
What is the difference between layer 4 and layer 7?
At Layer 4, a load balancer has visibility on network information such as application ports and protocol (TCP/UDP). … At Layer 7, a load balancer has application awareness and can use this additional application information to make more complex and informed load balancing decisions.
Is SSL a Layer 7?
-SSL/TLS can arguably be called a Transport protocol for the “application data” that the webbrowser is trying to display to the end-user. This puts it at around Layer 6-7 depending on how you want to argue for “presentation” vs “application” layer.
What is the strongest DDoS method?
DNS Flood. One of the most well-known DDoS attacks, this version of UDP flood attack is application specific – DNS servers in this case. It is also one of the toughest DDoS attacks to detect and prevent.
What is another name for a layer 7 load balancer?
A device that performs Layer 7 load balancing is often referred to as a reverse‑proxy server.
How SSL works step by step?
Step-by-step, here’s how SSL works:A user connects to an SSL-enabled service such as a website.The user’s application requests the server’s public key in exchange for its own public key. … When the user sends a message to the server, the application uses the server’s public key to encrypt the message.More items…•
What is a Layer 7 attack?
An application layer DDoS attack (sometimes referred to as layer 7 DDoS attack) is a form of DDoS attack where attackers target application-layer processes. The attack over-exercises specific functions or features of a website with the intention to disable those functions or features.
What are the Layer 7 protocols?
Layer 7 (Application Layer)SOAP, Simple Object Access Protocol.Simple Service Discovery Protocol, A discovery protocol employed by UPnP.TCAP, Transaction Capabilities Application Part.Universal Plug and Play.DHCP.DNS Domain Name System.HTTP.HTTPS.More items…
What is a layer 4 attack?
Layer 3 and Layer 4 DDoS attacks are types of volumetric DDoS attacks on a network infrastructure. Layer 3 (network layer) and 4 (transport layer) DDoS attacks rely on extremely high volumes (floods) of data to slow down web server performance, consume bandwidth, and eventually degrade access for legitimate users.