Ssh Config File Options

In this example, the SSH connection is configured to use the user and known hosts file defined in OpenSSH config and the port defined inBolt config. After a lot of google search the SSH options command to setup should be: StrictHostKeyChecking [ask, no, yes] PreferredAuthentications a mix of [gssapi-with-mic, publickey, password, keyboard-interactive]. net and authenticated with the publishing credentials. SSH uses the public key encryption for such purposes. -t Tty; allocate a tty even if command is given. HostName: the complete DNS name of the machine. Because of the potential for abuse, this file must have strict permissions: read/write for the user, and not accessible by others. You can also set the "remote. The first cipher, aes256-ctr, is now preferred. Solaris File : /etc/ssh/sshd_config The sshd daemon reads configuration data from /etc/ssh/sshd_config (or the file specified with sshd -f on the command line). When you run the following command, SSH locates and loads any settings from the Host myvm block in the SSH config file. ssh/config W$ chmod 600 ~/. The most important configuration files. EnableSSHKeysign Setting this option to ``yes'' in the global client configuration file /etc/ssh/ssh_config enables the use of the helper program ssh-keysign(8) during HostbasedAuthentication. availableKernelModules. forced-commands-only means that authentication is allowed only for “publickey” (for SSHv2, or RSA, for SSHv1) and only if the matching authorized_keys entry for root has a command= option. ssh/config` file within PyCharm to access a git repository behind a proxy. To do that, edit SSH configuration file and set Protocol 2 as shown below: # vim /etc/ssh/sshd_config. OS X Tiger, RHEL 4 and recent versions of Fedora Core all meet this requirement. The syntax is: $ ssh -o ProxyCommand='ssh firewall nc remote_server1 22' remote_server1. Without a file system, information placed in a storage medium would be one large body of data with no way to tell where one piece of information stops and the next begins. $ man 5 ssh_config $ man 5 sshd_config $ man 1 ssh-keygen If you need further guidance, you could also look at the following articles on the same subject: How To Create an SSH CA to Validate Hosts and Clients with Ubuntu. Practically, all files under your user based. You can write. It supports secure remote logins, secure file transfer between computers, and a unique "tunneling" capability that adds encryption to otherwise insecure network applications. If SFTP is enabled on a Guacamole VNC connection, users will be able to upload and download files as described in Chapter 15, Using Guacamole. The following options are available: -l user Log in using this user name. Set up a server and storage on Amazon Web Services (AWS), Select a location for the server, Select an operating system and setup initial configuration for the server, Connect to the server from SSH and AWS management console, Assign a permanent IP address (Elastic IP) to your server, Add and manage storage on the server. Passphrase / Password. ssh directory on local host, if not present already Creating authorized_keys file on local host Changing permissions on authorized_keys to 644 on local host Creating known_hosts file on local host Changing permissions on known_hosts to 644 on local host Creating config file on local host If a config file exists already at /home/oracle. System-wide configuration file, /etc/ssh/ssh_config. ssh_config is the configuration file for the OpenSSH client. SFTP and SCP file transfer functions are included. You can add or edit identity files, port forwardings (with graphical preview) and any other ssh config option. (This does not work if ssh needs to ask for a password or passphrase; see also the -f option. The argument to this keyword must be ''yes'' or ''no''. The SSH configuration file in ~/. There are two different methods of logging into an SSH server: one is password-based authentication and the other is key-based authentication. Click on that terminal window, and then type in ssh-keygen and hit enter. The set of kernel modules in the initial ramdisk used during the boot process. d directory will get copied into the /etc/chef/client. While this parameter can also be used in the system wide /etc/ssh/ssh_config file, it is generally useless as the capabilities of the ssh(1) client on that host should match that file. sshd can be configured using command-line options or a configuration file (by default sshd_config(5)); command-line options override values specified in the configuration file. The following example shows how to copy files from a Cisco NX-OS device to a secure copy (SCP) or secure FTP (SFTP) server without a password: Procedure. ssh farnam or scp ~/my_file farnam. -l limit Limits the used bandwidth, specified in Kbit/s. /usr/sbin/sshd. The file contains keyword-value pairs, one per line, with keywords being case insensitive. You need an SSH client. pub in this example) to ~/. Example Specify the maximum number of the connections to the SSH server as 3: T2500G-10TS(config)# ip ssh max-client 3 19. This configuration file contains instructions which are necessary to setup the display. If you ever need to watch a log file to see if something goes into it, here is a cheeky command to do that. Dropbear is a relatively small SSH server and client. ssh/config file. json cannot have duplicate rule numbers with the existing rules in the USG, or there will be a provisioning loop. net and authenticated with the publishing credentials. Exclude files based on a pattern. 2) In raspi-config: after booting. These settings may be altered using the Protocol option in ssh_config(5), or enforced using the -1 and -2 options (see above). sshd rereads its configuration file when it receives a hangup signal, SIGHUP , by executing itself with the name and options it was started with, e. Mitch Frazier is an embedded systems programmer at Emerson Electric Co. Re: Support for. $ mole -remote:3306 -server my-database-server INFO[0000] listening on local address local_address = "127. You don’t have to configure kernel modules or forward ports, you don’t need to have a persistent connection – it’s all automatic and easy. To set the SSH keep alive option on a Linux client: Log in as root. Part 1: setting up the SSH connection. SSH is available only through https://. data/sessions. The argument must be ``yes'' or ``no''. If you ever need to watch a log file to see if something goes into it, here is a cheeky command to do that. To use SSHFS you only need SSH access to the remote server. To use an interpreter configuration, you need path mappings that set correspondence between the project folders, the folders on the server to copy project files to, and the URL addresses to access the copied data on the server. We will cover the most relevant collection of changes below. Despite its name, PSCP also uses SFTP as its first option for transferring files when the server to which PSCP is connected is an SSH-2 server. command-line options 2. The configuration file syntax consists in lines beginning with a keyword referenced in this manual, optionally followed by one or several parameters delimited by spaces. Once your server and login info is inputted, hit Control+O to. Once the maximum value is reached, the numbering sequence is restarted at 1, overwriting the older file. Editing wp-config. Over ten years ago (that would be back in 2002 as of this writing), I went searching for a good, general page that would explain how to do passwordless logins using ssh-agent and didn't find much at the time (now there is much more out there). The settings works from the commandline and it is picked up by the interface so I can see it in VCS->GIT->Remotes. ssh/config is used next. py in your Jupyter folder. ssh/config) and your system-wide configuration file (/etc/ssh/ssh_config) to understand in more details. config/git/config file: Values specific personally to you, the user. Configuring public key authentication. Because of the potential for abuse, this file must have strict permissions: read/write for the user, and not writable by others. SEE ALSO sshd(8) AUTHORS OpenSSH is a derivative of the original and free ssh 1. The latest version can be found from: www. In computing, a file system or filesystem (often abbreviated to fs), controls how data is stored and retrieved. ssh/id_user1 PubkeyAuthentication yes which works great for the user1 at port 22 scenario but is there a way to setup an alternate user and IdetityFile for user2 at port 2222?. It’s sometimes easier to configure options on your SSH client system in ~/. X11Forwarding must be set on the SSH server (in your case the Ubuntu box) in its sshd_config, and you must allow X11 to be forwarded for the SSH client (your Fedora box) by passing the -X option or editing the ssh_config file to add the ForwardX11 default. The server config is at /etc/ssh/sshd_config, is only editable by root, and applies to incoming connections to that machine. By default sshd, the Openssh daemon, reads its configuration from the /etc/ssh/sshd_config file. One of the added benefits of using ssh's config file is that programs like scp, rsync, and rdiff-backup automatically pick up these options also and work just as you'd expect (hope). ~/ssh/authorized_keys - list of keys, whose owners can log in without a password. See SSH config file for more advanced configuration options. command-line options 2. Dropbear SSH. For each node you wish to be a proxy, configure the SSH Public Host (must be an IP address, not a DNS name) and the SSH Bind IP Address (use 0. -J [[email protected]]host[:port] Connect to the target host by first making a ssh connection to the pjump host[(/iam/jump-host) and then establishing a TCP forwarding to the ultimate destination from there. Looks like one or all of the following directories/files have incorrect. $ ssh -oStrictHostKeyChecking=no [email protected]_host. For more information on why SSH was disabled see HERE. Steps are numbered from 1 to 6. The file contains keyword-value pairs, one per line, with keywords being case insensitive. System Services Overview, Configuring Telnet Service for Remote Access to a Router or Switch, Configuring FTP Service for Remote Access to the Router or Switch, Configuring Finger Service for Remote Access to the Router, Configuring SSH Service for Remote Access to the Router or Switch, The telnet Command, The ssh Command, Configuring SSH Host Keys for Secure Copying of Data, Configuring the. To use a jump-box setup with the Remote - SSH extension, you can use the ProxyCommand config option. The latest version can be found from: www. You can configure your OpenSSH ssh client using various files as follows to save time and typing frequently used ssh client command line options such as port, user, hostname, identity-file and much more:. Restart ssh service to take effect the changes. ) Listing Commands and Command Options At any privilege level you can:. The configuration is comprised of a set of sections and parameters for those sections. For working with wifi in openWrt there is a script /sbin/wifi. Configure the SSH client on the SiteScope server to only make SSH2 requests. The main use of the open SSH command is to log into the host. Open your SSH configuration file with the command: sudo gedit /etc/ssh/sshd_config. For headless setup, SSH can be enabled by placing a file named ssh, without any extension, onto the boot partition of the SD card from another computer. Although the daemon allows password-based authentication, exposing a password-protected account to the network can open up your server to brute-force attacks. -o ssh_option Can be used to pass options to ssh in the format used in ssh_config(5). ssh/config file. And in this latter case we ~/bin/ssh is an alias to ssh-ident, and we count on that picking up the required ssh configuration options and passing them to the real ssh. In addition, you also may have need to make an edit to the “sshd_config” file under “C:/ProgramData/ssh” to allow a specific Active Directory user. port, or to always attempt to use -X for X11 forwarding. The /etc/ssh/ssh_config file is the system-wide configuration file for OpenSSH which allows you to set options that modify the operation of the client programs. d/ssh restart. $ man 5 ssh_config $ man 5 sshd_config $ man 1 ssh-keygen If you need further guidance, you could also look at the following articles on the same subject: How To Create an SSH CA to Validate Hosts and Clients with Ubuntu. I mean, why would you NOT use SSH with the compression option enabled all the time? So, instead of remembering to type it every time, you can do what I did and enable the option in your ssh configuration file at ~/. Recent Xfce [1] will start ssh-agent (and gpg-agent ) automatically. Consider this sample configure network command ciscorouter>ena Password: ciscorouter#configure network Host or network configuration file [host]?. It is possible to have multiple identity files specified in configuration files; all of these identities will be tried in sequence. You can configure your OpenSSH ssh client using various files as follows to save time and typing frequently used ssh client command line options such as port, user, hostname, identity-file and much more:. Therefore, the Vagrantfile in the project directory overwrites any conflicting configuration from the home directory which overwrites any conflicting configuration from a box which overwrites any conflicting configuration from the default file. 4948#conf t. 64-t024 (never released) Never released at all. Client configuration files /etc/ssh/ssh_config - client system-wide configuration file. In Linux this is much easier. Using password authentication is very insecure, especially if your user uses a weak password. The SSHD configuration file should be reviewed for fitness to your security policy. ssh/config on my Linux system on the c:\Program Files\Git\etc\ssh\ directory on Windows. In the Places panel on the left click the arrow next to the SSHFS mount you want to disconnect or right-click it and select "Unmount". This is only available when using the "From Gallery" functionality in the portal, or a command line tool. For example, when a base box is a Microsoft Windows operating system that does not have SSH installed and enabled, Vagrant will not be able to boot without a custom Vagrant file. While this makes global. com" >> config echo "IdentityFile ~/. If you only have one config, then you could look at using a symbolic link either way, be careful of using an SSH config file from a repository, as it would be easy for others to modify it, and for you to miss the changes yep, ${CONFIG_1} is standard bash notation for a variable. Default Servers. ) ForwardX11Trusted. file: session file path, e. Locate the comment line #LoginGraceTime 2m. SSH works as expected client server architecture. Finally, the global /etc/ssh/ssh_config file is used. The hostname resolution 5. ssh/config This is the per-user configuration file. In this article, we will dive into the world of secure transfer of files in Linux using the scp command. command-line options 2. xlaunch config created during the “Configuring a xlaunch file” phase and use the X11 applications from the windows machine. To avoid repetitive and lengthy command-line options, I maintain a local configuration file that sets the identity and other options for each destination. ssh [email protected] Because of the potential for abuse, this file must have strict permissions: read/write for the user, and not writable by others. availableKernelModules. net and authenticated with the publishing credentials. ssh/ # Create the config file # alternatively create the file using SFTP # or in the way you want, we are using touch touch config And register your key in the file. Arguments that contain spaces are to be enclosed in double quotes ("). ssh directory (if you have one): ls ~/. If either of these environment variables is set then git fetch and git push will use the specified command instead of ssh when they need to connect to a remote system. Managing many configuration files can be tedious. The first cipher, aes256-ctr, is now preferred. Multiple path‐ names may be specified and. Some options require a reboot to take effect. OpenSSH is a derivative of the original and free ssh 1. Advanced SSH Configuration Example SSH config. ssh directory), you can create them by running a program called ssh-keygen, which is provided with the SSH package on Linux/macOS systems and comes with Git for Windows:. The cloud-config file uses the YAML file format, which uses whitespace and new-lines to delimit lists, associative arrays, and values. If this option is enabled then instead of calling 'ssh', SSHMenu will call bcvi --wrap-ssh --Use 'OK' to save your host definition; 'Cancel' to exit without saving; or 'Test' to try it out before you save. To configure sshd to be launched from xinetd, you must configure xinetd to listen on TCP port 22, and to run /usr/sbin/sshd -i when a connection is established. ssh_config is the configuration file for the OpenSSH client. and restart the sshd service: service sshd restart. However, in the configuration file the initial hyphens of command-line options must be omitted, and optionally a colon may be appended to these long options names. ssh/id_user1 PubkeyAuthentication yes which works great for the user1 at port 22 scenario but is there a way to setup an alternate user and IdetityFile for user2 at port 2222?. Use the advanced options for running services and running test in parallel. The ssh configuration is handled by the dropbear subsystem of uci and the configuration file is located in /etc/config/dropbear. To configure the log file, edit the /etc/sysconfig/docker file. Would it be possible to have new settings for the config and known hosts file locations? The config location would be "~/. There are two different methods of logging into an SSH server: one is password-based authentication and the other is key-based authentication. rsa_private: and rsa_public:. The SSHD configuration file should be reviewed for fitness to your security policy. After successfully installing OpenSSH on Ubuntu, you can edit its configuration file. This file should be writable by root only, but it is recommended (though not necessary) that it be world-readable. I'm not entirely sure what they are supposed to be. The following is the full explanation for the options; The key here is the ServerAliveInterval option for the SSH client. $ mole -remote:3306 -server my-database-server INFO[0000] listening on local address local_address = "127. Find the line that contains the PasswordAuthentication property and disable it with: PasswordAuthentication no Before restarting the ssh daemon to take the changes into effect, be sure you have created and configured an SSH key to use for login. I've followed the official documentation about how to set up ssh with SSH config file but e. d, and the contents of that directory will be copied to the device being bootstrapped. In this post I explain how I made it work. The file format and configuration options are described in ssh_config(5). You can also do things such as configuring a manual step and setting a maximum time for each step, configure 2x steps to get 8GB of memory. Also I can't connect to the first machine when i try ssh -i. ssh/config on my Linux system on the c:\Program Files\Git\etc\ssh\ directory on Windows. Keep Alive. To disable root logins, make sure you have the following entry: # Prevent root logins: PermitRootLogin no. Lsyncd calls this binary as ssh (default: /usr/bin/ssh) identityFile = FILE Uses this file to identify for public key authentication. Under the hood. Uncomment it and set it’s value as no. –o ssh_option Can be used to pass options to ssh in the format used in the ssh_config and zos_user_ssh_config configuration files. Editing wp-config. You can also set the "remote. Here is an example:. Turn on GSSAPI options in your ~/. The following example shows how to copy files from a Cisco NX-OS device to a secure copy (SCP) or secure FTP (SFTP) server without a password: Procedure. Defaults to 60 seconds. The configuration files are stored in /etc/modules-load. The /etc/ssh/sshd_config file is the system-wide configuration file for OpenSSH which allows you to set options that modify the operation of the daemon. user's configuration file (~/. ssh/private-key. We are also offering FileZilla Pro, with additional protocol support for WebDAV, Amazon S3, Backblaze B2, Dropbox, Microsoft OneDrive, Google Drive, Microsoft Azure Blob and File Storage, and Google Cloud Storage. Because you will be using them over and over again, store them in the SSH client config file. config on our Jumphosts. Specify the filename to -K, --config as '-' to make curl read the file from stdin. OpenSSH creates the ~/. It has no effect on the z/OS-specific configuration files. To allow the use of RSA / DSA key files with Filezilla, you'll need to download two more tools from PuTTY: Pageant and (assuming your key file isn't already in PPK format) PuTTYgen. ssh directory permissions to 700. issue_type , m. Using password authentication is very insecure, especially if your user uses a weak password. Do not confuse /etc/ssh/sshd_config with /etc/ssh/ssh_config (note the extra d in the first filename). d directory on the system being bootstrapped. These files are normally stored in a text-based format. PSCP is a tool for transferring files securely between computers using an SSH connection. It is recommended that IgnoreUnknown be listed early in the configuration file as it will not be applied to unknown options that appear before it. AllowTCPForwarding yes. Reflection for Secure IT Server features. up I can think of. First, make a backup of your sshd_config file by copying it to your home directory, or by making a read-only copy in /etc/ssh by doing:. While relatively simple actions, like changing the ssh port on your. Once the path is decided, you will be prompted to input a password to secure your new SSH key pair. It will look as follows:. The network device support 5. If a configuration file is given on the command line, the system-wide configuration file (/etc/ssh/ssh_config) will be ignored. 11) Answer The ssh program in macOS Sierra no longer supports the GSSAPIKeyExchange option. You can set the ProxyCommand config option in the SSH config file like this:. ) For example, the following code snippet will connect to the given remote host, and requests that the ssh-rsa host key type be used, with the blowfish-cbc cipher algorithm, and. Click on "Generate" and download the files. Your articles will feature various GNU/Linux configuration tutorials and FLOSS technologies used in combination with GNU/Linux operating system. Open the File Browser (Nautilus). Also I can't connect to the first machine when i try ssh -i. Configuring SSH keys in cPanel. For more details and a full listing of available configurations go to configuration_settings. The ssh command allows you to use "-oStrictHostKeyChecking=[yes|no]" command line option to enable or disable ssh host key checking. The format is fully described by the ssh_config (5) man page, but I’ll give you a few examples to get you started. _extra = STRING TABLE. Public Key Authentication. https://answers. $ ssh -oStrictHostKeyChecking=no [email protected]_host. OS X Tiger, RHEL 4 and recent versions of Fedora Core all meet this requirement. See the –Compression option in ssh_config(4). The format of this file is described above. command-line options # 2. ssh/config file. -o ssh_option Can be used to pass options to ssh in the format used in ssh_config(5). Because of the potential for abuse, this file must have strict permissions: read/write for the user, and not accessible by others. The ssh configuration is handled by the dropbear subsystem of uci and the configuration file is located in /etc/config/dropbear. SSH support multiple ways to authenticate users, the most common one is by asking a login and a password but you can also authenticate user a login and a public key. SFTP is a newer protocol designed to work with SSH-2 (Secure Shell version 2). This is the most secure option but may be the most time- consuming unless each server was configured for this option when it was installed and activated. The first octet is the option code, the second octet is the number of following octets and the remaining octets are code dependent. Use ssh-keygen to create RSA and DSA keys for public key authentication, to edit the properties of existing keys, and to convert key file formats for compatibility with other Secure Shell implementations. 4948(config)#crypto key generate rsa modulus 1024 The name for the keys will be: 4948. Omnibus-gitlab package loads all configuration from /etc/gitlab/gitlab. For example, a user can override a system-wide configuration Ciphers setting that prefers aes128-ctr by specifying -c aes256-ctr,aes128-ctr,arcfour on the command line. The syntax is as follows: ssh -i / path / to / id_rsa user @ server. These can be stored in the ~/. Make sure not to get them mixed up. Another option to mount the remote file systems is to use either the autofs tool or to create a systemd unit. Switch places for yes and no to toggle the other way. Motion reads the command line option again overruling any previously defined options. ssh/config file. ssh/config) 3. cfg file, as the network must be configured before the preseed file can be fetched. _extra = STRING TABLE. From this file we can set useful defaults to make logging into remote servers as easy as ssh myserver. ssh, usually 600 (read and write by user only). You can use the file command to see more detail. You can configure your OpenSSH ssh client using various files as follows to save time and typing frequently used ssh client command line options such as port, user, hostname, identity-file and much more:. The file name will normally reference the associated application. Dropbear is open source software, distributed under a MIT-style license. OpenSSH options are controlled through the /etc/ssh/sshd_config file. I am using OpenSSH_7. ssh/config Entries in there begin with Host nick-name, this allows you to use nick-name for the remote server instead of its probably longer name. Setup your. The SSH config file isn't created automatically while installing SSH on your machine. pub file is your public key, and the other file is the corresponding private key. The command-line parameters passed to the configured command are determined by the ssh variant. -o ssh_option Can be used to pass options to ssh in the format used in ssh_config(5). You can also start the Docker daemon manually and configure it using flags. The public key will be placed on the server by your system administrator, giving you. OpenSSH has test mode option. On some deployments, such as ones where restrictive firewalls are in place, you might need to manually configure a firewall to permit OpenStack service traffic. The default value can be set on a host-by-host basis in the configuration files. I've followed the official documentation about how to set up ssh with SSH config file but e. To manually configure a firewall, you must permit traffic through the ports that each OpenStack service uses. These are global settings, not just related to this connection, so be sure you do not need the capability these configuration options prohibit. List the files in your. Config file contains other soft links to key files. I'm looking to SCP a file on a remote host which I usually would SSH into. variables for your ssh connections. Compression is desirable on modem lines and other slow connections, but only slows down things on fast networks. [list] Add keys to user's authorized keys file # ssh_redirect_user: Optional. The format of the config file is one option per line, option names are case-insensitive and commenting with # is supported. The repository settings may open to the Remotes tab. Vagrantfile Options. share | improve this answer. Configure how SSH runs on the server for better security. Note that the Debian openssh-server package sets several options as standard in /etc/ssh/sshd_config which are not the default in sshd(8). The custom rules created in the config. ssh/ # Create the config file # alternatively create the file using SFTP # or in the way you want, we are using touch touch config And register your key in the file. txt and various standard Linux configuration files. Dropbear is open source software, distributed under a MIT-style license. Below are the locations of the ssh client configuration files: /etc/ssh/ssh_config – this is the default, system-wide configuration file. Use command “ssh -V” to check the SSH version installed. forced-commands-only means that authentication is allowed only for “publickey” (for SSHv2, or RSA, for SSHv1) and only if the matching authorized_keys entry for root has a command= option. ssh directory on local host, if not present already Creating authorized_keys file on local host Changing permissions on authorized_keys to 644 on local host Creating known_hosts file on local host Changing permissions on known_hosts to 644 on local host Creating config file on local host If a config file exists already at /home/oracle. With reference to our above ~/. You find the ssh configuration file in /etc/ssh/ssh_config. ini file are: safe_mode register_globals upload_max_filesize post_max_size max_execution_time. Set strict permissions: read/write for the user, and not. config file extension that you place in a folder named. In sshd_config, the lines that start with # are comments. To do so, open the /etc/ssh/sshd_config configuration file in a text editor such as vi or nano, and change the PasswordAuthentication option as follows: PasswordAuthentication no If you are working on a system other than a new default installation, check that PubkeyAuthentication no has not been set. And now coming back to the question, RSAAuthentication is supported only for SSH Protocol version 1 and should not be used for SSH Protocol version 2. This option is directly passed to ssh(1). Setup your. For a detailed description, please the sshd_config documentation. The configuration options are described in the manual page for ssh_config and there is no such option as Pass. ssh/authorized_keys file is as follows: options keytype base64-encoded-key comment. By default sshd, the Openssh daemon, reads its configuration from the /etc/ssh/sshd_config file. For working with wifi in openWrt there is a script /sbin/wifi. Update (or restore previous) sshd_config and ssh_config files **It is recommended that you use the newly installed ssh_config and sshd_config files and and if there were any customization done to the old files you should manually add those changes to the new files. Go to the Metadata page. This can be used to set simple configurations in the master config file that can then be used on minions. All configurations will be merged within a single Vagrantfile in the order they're defined. SSH provides two different commands, which can be used to accomplish this. ssh_scan is an easy-to-use prototype SSH configuration and policy scanner for Linux and UNIX servers, inspired by Mozilla OpenSSH Security Guide, which provides a reasonable baseline policy recommendation for SSH configuration parameters such as Ciphers, MACs, and KexAlgos and much more. You can avoid having to use the -p option every time you login to the remote server by creating or editing the ~/.