Stunnel from the Source

download, compile and install

• apt install libssl-dev
• wget https://www.stunnel.org/downloads/stunnel-5.55.tar.gz
• tar -xvzf stunnel-5.55.tar.gz
• cd stunnel-5.55/
• ./configure
• make
• make install

configure

• cat /usr/local/etc/stunnel/stunnel.conf

debug = 7
output = /var/log/stunnel.log
pid = /var/run/stunnel4/stunnel.pid
[https]
accept = 443
connect = 10.80.100.10:80
cert = /etc/stunnel/example.pem

systemd

• cp /usr/src/stunnel-5.55/tools/stunnel.service /etc/systemd/system
• cat /etc/systemd/system/stunnel.service

[Unit]
Description=TLS tunnel for network daemons
After=syslog.target network.target

[Service]
ExecStart=/usr/local/bin/stunnel
Type=forking

[Install]
WantedBy=multi-user.target

• systemctl daemon-reload
• systemctl start stunnel
• systemctl enable stunnel