vsftpd 登入 Email 通知

安裝 mailx，使用mail指令發信

$ yum install mailx

新增 Email 通知的 sell script

$ vi /etc/vsftpd/email_script.sh

email_script.sh 內容

#!/bin/bash
[ "$PAM_TYPE" = "open_session" ] || exit 0
{
echo "User: $PAM_USER"
echo "Ruser: $PAM_RUSER"
echo "Rhost: $PAM_RHOST"
echo "Service: $PAM_SERVICE"
echo "TTY: $PAM_TTY"
echo "Date: `date`"
echo "Server: `uname -a`"
} | mail -S "from=vsftpd<vsftpd@example.com>" -s "`hostname -s` $PAM_SERVICE login: $PAM_USER" xyz@example.com

修改為可執行

$ chmod +x /etc/vsftpd/email_script.sh

使用PAM session機制，在登入時，執行發信的email_script.sh

$ vi /etc/pam.d/vsftpd

新增

session optional pam_exec.so /etc/vsftpd/email_script.sh

修改 vsftpd.conf，開啟 session_support，PAM 中 vsftpd 設定的 session 才會有效

$ vi /etc/vsftpd/vsftpd.conf

新增

session_support=YES

重新啟動vsftpd

$ systemctl restart vsftpd

登陸Linux伺服器時觸發郵件提醒 - IT閱讀
linux - Using pam_exec.so to run a script as root when a user logs in (while extracting user information)? - Unix & Linux Stack Exchange
pam - How to configure vsftpd to send me an email on user login process? - Stack Overflow
FTP (Vsftp) log 設定說明 | FAQ Book