Login notification script

Sends you an e-mail at each user login on linux systems and sends the output of some commands as attachments :

• netstat (connections/servers)
• iptables (firewall configuration, on root login only)
• ps (processes list)
• who (logged in users and hostnames)

Prerequisites

• Install mutt, e-mail client

  • On Debian/Ubuntu : sudo apt-get install mutt or apt install mutt

• A configured MTA/SMTP server in order to send emails.

Installation

• Copy the script in :
  • /etc/profile.d/login-notify.sh .

Configuration

• Change (line 17) my-address@my-mail-provider.tld with the destination mail address.
• Change (line 18) security@my-server-domain.tld with the source mail address.

Permissions

• Set the owner/group to root user :
  • sudo chown root:root /etc/profile.d/login-notify.sh
• Set Read/Write/Execute to root user only, others (group and others) to Read/Execute :
  • sudo chmod 755 /etc/profile.d/login-notify.sh

Test

• As root : sudo /etc/profile.d/login-notify.sh
• and : /etc/profile.d/login-notify.sh