OSI OSI 7 Layer Model
7. Application Layer - DHCP, DNS, FTP, HTTP, IMAP4, NNTP, POP3, SMTP, SNMP, SSH, TELNET and NTPmore)
6. Presentation layer - SSL, WEP, WPA, Kerberos,
5. Session layer - Logical Ports 21, 22, 23, 80 etc…
4. Transport - TCP, SPX and UDPmore)
3. Network - IPv4, IPV6, IPX, OSPF, ICMP, IGMP and ARPMP
2. Data Link- 802.11 (WLAN), Wi-Fi, WiMAX, ATM, Ethernet, Token Ring, Frame Relay, PPTP, L2TP and ISDN-ore)
1. Physical-Hubs, Repeaters, Cables, Optical Fiber, SONET/SDN,Coaxial Cable, Twisted Pair Cable and Connectors (more)
Typically it would be a hidden folder called ".ssh".
SSH
SSH is extremely simple. Using the SSH client, you connect to the computer running the SSH server using the commandssh [ip address or hostname here]
An SSH Keygen is used to generate, manage, and convert authentication keys for SSH authentication. With an SSH Keygen tool, a user can create passphrase keys for both SSH protocol version 1 and 2.
/etc/ssh/sshd_config In some distributions it can be in odd places like /etc/sshd_config, /usr/local/etc/ssh/sshd_config
ssh
Most Linux distributions will come with SSH preinstalled. If it's not, install the package "ssh".
To set up SSH with DSA/RSA public key authentication, you need to generate a key pair on the client machine using a command like ssh-keygen. Then, copy the public key to the server's ~/.ssh/authorized_keys file. Finally, make sure the permissions on the ~/.ssh/ directory and the authorized_keys file are secure (e.g., chmod 700 ~/.ssh and chmod 600 ~/.ssh/authorized_keys).
It is usually referred to simply as "SSH."
I assume you mean the user's ssh directory, which is stored in their home directory. Use the following command: rm -rf .ssh This will remove any previously used and verified ssh connections so any connections after that via ssh will need to be verified.
The well-known traditional port for ssh is port 22.
sshd is the package provide ssh sessions .