Skip to main content

osi model

topic we will be covered :-

  • Open Systems Interconnection (OSI) Model

  1. 7 layer of osi madel
  2. Concept of the OSI model
  3.  the Application Layer
  4.  the Presentation Layer
  5.  the Session Layer
  6. the Transport Layer 
  7. the Network Layer
  8. the Data Link Layer 
  9. the Physical layer

  • Security Protocols - Application Layer

  1. Introduction to Protocol concepts
  2.  Border Gateway Protocol (BGP)
  3.  Dynamic Host Configuration Protocol (DHCP)
  4. Domain Name System (DNS)
  5.  File Transfer Protocol (FTP)
  6. Hyper Text Transfer Protocol (HTTP)
  7.  Lightweight Directory Access Protocol (LDAP)
  8.  Media Gateway Control Protocol (MGCP)
  9. Network News Transfer Protocol (NNTP)
  10.  Network Time Protocol (NTP)
  11. Post Office Protocol (POP)
  12.  Internet Message Access Protocol (IMAP)
  13.  Routing Information Protocol (RIP)
  14.  Remote Procedure Call (RPC)
  15. Real Time Streaming Protocol (RTSP)
  16.  Session Initiation Protocol (SIP)
  17.  Simple Mail Transport Protocol (SMTP)
  18.  Simple Network Management Protocol (SNMP)
  19.  Socket Secure (SOCKS), Secure Shell (SSH)
  20.  Remote Terminal Control Protocol (Telnet)
  21.  Transport Layer Security/Secure Sockets Layer (TLS/SSL)
  22.  extensible Messaging & Presence Protocol (XMPP)
  23. Wireless Application Protocol (WAP) 
  24.  Internet Relay Chat (IRC)
  25. Enhance interior gateway rauter protocol (EIGRP)

                                • transport layer

                                1. TCP/IP
                                2.  User Data-gram Protocol (UDP)
                                3.  Real-time Transport Protocol (RTP)
                                4. congestion control
                                5.  Data-gram Congestion Control Protocol (DCCP)
                                6.  Stream Control Transmission Protocol (SCTP)
                                7.  Resource reservation Protocol (RSVP)
                                8.  Explicit Congestion Notification (ECN)

                                          • network layer
                                          1.  Internet Protocol Version 4 (IP4)
                                          2.  Internet Protocol Version 6 (IP6)
                                          3.  Internet Protocol Security (IPSEC)
                                          4.  Internet Control Message Protocol (ICMP)
                                          5.  Internet Group Management Protocol (IGMP)
                                          • data-link layer
                                          1. Address Resolution Protocol (ARP)
                                          2. Open Shortest Path First (OSPF)
                                          3. Neighbor Discovery Protocol (NDP)
                                          4. Tunneling Protocol (Tunnels)
                                          5. Point to Point Protocol (PPP)
                                          6. Case Studies

                                                    Comments

                                                    Popular posts from this blog

                                                    Special Permissions in linux

                                                    The setuid permission on an executable file means that the command will run as the user owning the file, not as the user that ran the command. One example is the passwd command: [student@desktopX ~]$ ls -l /usr/bin/passwd -rw s r-xr-x. 1 root root 35504 Jul 16 2010 /usr/bin/passwd In a long listing, you can spot the setuid permissions by a lowercase s where you would normally expect the x (owner execute permissions) to be. If the owner does not have execute permissions, this will be replaced by an uppercase S . The special permission setgid on a directory means that files created in the directory will inherit their group ownership from the directory, rather than inheriting it from the creating user. This is commonly used on group collaborative directories to automatically change a file from the default private group to the shared group, or if files in a directory should be

                                                    The Seven-Step Model of Migration

                                                    Irrespective of the migration approach adopted, the Seven-step Model of Cloud Migration creates a more rational point of view towards the migration process and offers the ability to imbibe several best practices throughout the journey Step 1: Assess Cloud migration assessments are conducted to understand the complexities in the migration process at the code, design and architectural levels. The investment and the recurring costs are also evaluated along with gauging the tools, test cases, functionalities and other features related to the configuration. Step 2: Isolate The applications to be migrated to the cloud from the internal data center are freed of dependencies pertaining to the environment and the existing system. This step cuts a clearer picture about the complexity of the migration process. Step 3: Map Most organisations hold a detailed mapping of their environment with all the systems and applications. This information can be used to distinguish between the

                                                    RequestsDependencyWarning: urllib3 (1.24.1) or chardet (3.0.4) doesn't match a supported version

                                                    import tweepy /usr/lib/python2.7/dist-packages/requests/__init__.py:80: RequestsDependencyWarning: urllib3 (1.24.1) or chardet (3.0.4) doesn't match a supported version!   RequestsDependencyWarning) Traceback (most recent call last):   File "<stdin>", line 1, in <module>   File "/usr/local/lib/python2.7/dist-packages/tweepy/__init__.py", line 14, in <module>     from tweepy.api import API   File "/usr/local/lib/python2.7/dist-packages/tweepy/api.py", line 12, in <module>     from tweepy.binder import bind_api   File "/usr/local/lib/python2.7/dist-packages/tweepy/binder.py", line 11, in <module>     import requests   File "/usr/lib/python2.7/dist-packages/requests/__init__.py", line 97, in <module>     from . import utils   File "/usr/lib/python2.7/dist-packages/requests/utils.py", line 26, in <module>     from ._internal_utils import to_native_string   File "/usr/lib/python2.

                                                    tag