![]() ![]() The best choice for a password is something long (the longer, the better) and generated from a random source. photocopyhauntbranchexpose) including with character substitution (e.g. Common phrases or short strings of dictionary words (e.g.Root "words" or common strings followed or preceded by added numbers, symbols, or characters (e.g., DG091101%).Simple character substitutions on words (e.g., k1araj0hns0n), as modern dictionary attacks can easily work with these.Personally identifiable information (e.g., your dog's name, date of birth, area code, favorite video game).Insecure passwords include those containing: In cryptography the quality of a password is often referred to as its entropy. The tenets of strong passwords are based on length and randomness. personal information, or cracked using methods like social engineering or brute-force attacks. Passwords must be complex enough to not be easily guessed from e.g. They are the main way a computer chooses to trust the person using it, so a big part of security is just about picking secure passwords and protecting them. They secure your user accounts, encrypted filesystems, and SSH/ GPG keys. Create a plan ahead of time to follow when your security is broken. You can never make a system 100% secure unless you unplug the machine from all networks, turn it off, lock it in a safe, smother it in concrete and never use it.If anything sounds too good to be true, it probably is! When one layer is breached, another should stop the attack. Defense in depth: Security works better in independent layers.The principle of least privilege: Each part of a system should only be able to access what is strictly required, and nothing more.The biggest threat is, and will always be, the user.The trick is to create a secure and useful system. Security and convenience must be balanced. ![]() It is possible to tighten security to the point where the system is unusable.# This script is licensed under GNU GPL version 2.This article contains recommendations and best practices for hardening an Arch Linux system. # scriptname = Path to remote script which will execute on remote server # ipaddr = IP Addreess of remote UNIX server, no hostname # password = Password of remote UNIX server, for root user. # This script needs three argument to(s) connect to remote server: # Expect script to supply root/admin password for remote ssh server Just in case the site goes down: #!/usr/bin/expect -f But it handles automation of text input and, you guessed it, "expects" certain bits of output before entering in any sort of automated password entry or escalation of privileges. It's a language based off of TCL, so it might be a bit weird compared to plain old shell scripts. I know you've already found an answer for this, but this might be helpful if you have to login to a bunch of servers that require interactive password entry. Adding a NOPASSWD rule for your user in /etc/sudoers would make the process even smoother. Since sudo typically remembers you authorization level for a few minutes before asking for the root password again, just prepending sudo to all commands you need to run as root is likely the easiest way to run commands as root on the server. To sum it all up, one way of accomplishing what you want to do, would be: What you need to do, is to use either sudo or su -c, and force TTY allocation to SSH with the -t switch (required if you need to enter root password): This also works for a list of multiple commands:Īs other users have pointed out before me, running su on the server will launch a new shell instead of executing subsequent commands in the script as root. You can pass a command as an argument to SSH to just run that command on the server, and then exit: ![]()
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