VPS Setup 1 - SSH and Access

vps1.txt

# login - gain access to the box
ssh root@dmasi.us
# open 2 connections as we will need access if the changes below fail

# set up user
# set some vars
MYUSERNAME="dmasi"
MYUSERKEY="<pub key>"

useradd $MYUSERNAME
mkdir -p -m 755 /home/$MYUSERNAME/.ssh
chown $MYUSERNAME.$MYUSERNAME /home/$MYUSERNAME/.ssh/
touch /home/$MYUSERNAME/.ssh/authorized_keys 
echo $MYUSERKEY >> /home/$MYUSERNAME/.ssh/authorized_keys
 
# Configure Sudo for this user (allows the user to access sudo without logging in)
cp -pf /etc/sudoers /etc/sudoers.$(date +%Y%m%d%H%M%S).orig
sed -i 's/#.*//g' /etc/sudoers
sed -i '/^ *$/d'  /etc/sudoers
echo $MYUSERNAME 'ALL=(ALL) NOPASSWD: ALL' >> /etc/sudoers
cat /etc/sudoers
visudo -c

# Setup SSHD [OpenSSH SSH daemon]
cp -prf /etc/ssh/sshd_config /etc/ssh/sshd_config.$(date +%Y%m%d%H%M%S).orig
sed -i -e 's/#.*//' -e 's/[ ^I]*$//' -e '/^$/ d' /etc/ssh/sshd_config
sed -i '/PermitRootLogin/d'         /etc/ssh/sshd_config
sed -i '/PubkeyAuthentication/d'    /etc/ssh/sshd_config
sed -i '/PasswordAuthentication/d'  /etc/ssh/sshd_config
echo 'PermitRootLogin no'        >> /etc/ssh/sshd_config
echo 'PubkeyAuthentication yes'  >> /etc/ssh/sshd_config
echo 'PasswordAuthentication no' >> /etc/ssh/sshd_config
echo 'UseDNS no' >> /etc/ssh/sshd_config
cat /etc/ssh/sshd_config
service sshd restart

# exit and log back in as your user
exit
ssh dmasi@dmasi.us