What are the protocols used in OSI layers?
What are the protocols used in OSI layers?
TCP/IP Protocol Architecture Model
| OSI Ref. Layer No. | OSI Layer Equivalent | TCP/IP Protocol Examples |
|---|---|---|
| 5,6,7 | Application, session, presentation | NFS, NIS+, DNS, telnet , ftp , rlogin , rsh , rcp , RIP, RDISC, SNMP, and others |
| 4 | Transport | TCP, UDP |
| 3 | Network | IP, ARP, ICMP |
| 2 | Data link | PPP, IEEE 802.2 |
What are the Layer 7 protocols?
Layer 7, the Application Layer This layer uses following protocols: HTTP, SMTP, DHCP, FTP, Telnet, SNMP and SMPP.
What are the layer 4 protocols?
Some common protocols used in OSI Layer 4 are:
- User Datagram Protocol (UDP)
- UDP Lite.
- Cyclic UDP (CUDP)
- Reliable UDP (RUDP)
- AppleTalk Transaction Protocol (ATP)
- Multipath TCP (MTCP)
- Transaction Control Protocol (TCP)
- Sequenced Packet Exchange (SPX)
What is a function of the OSI Layer 4 protocol?
Layer 4 of the OSI Model: Transport Layer provides transparent transfer of data between end users, providing reliable data transfer services to the upper layers. The transport layer controls the reliability of a given link through flow control, segmentation and desegmentation, and error control.
What OSI layer is TCP?
transport-layer protocol
In terms of the OSI model, TCP is a transport-layer protocol. It provides a reliable virtual-circuit connection between applications; that is, a connection is established before data transmission begins.
Is WAF a Layer 7?
A WAF is a protocol layer 7 defense (in the OSI model), and is not designed to defend against all types of attacks. A WAF operates through a set of rules often called policies. These policies aim to protect against vulnerabilities in the application by filtering out malicious traffic.
What layer is SMTP?
Application layer
As with the other protocols and services discussed in this section, SMTP operates at the Application layer and relies on the services of the underlying layers of the TCP/IP suite to provide the actual data transfer services.
Is ARP a layer 3?
ARP works between network layers 2 and 3 of the Open Systems Interconnection model (OSI model). The MAC address exists on layer 2 of the OSI model, the data link layer, while the IP address exists on layer 3, the network layer.
What is a layer 3 protocol?
Network layer, layer 3. The most significant protocol at layer 3 (also called the network layer) is the Internet Protocol, or IP. IP is the standard for routing packets across interconnected networks–hence, the name internet. It is an encapsulating protocol similar to the way Ethernet is an encapsulating protocol.
What is layer 7 in OSI model?
application layer
Layer 7 of the OSI model, or the application layer, supports communications for end-user processes and applications, and the presentation of data for user-facing software applications.