第 46 章 Stunnel - universal SSL tunnel
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第 46 章 Stunnel - universal SSL tunnel

Homepage: http://www.stunnel.org/

Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code.

  1. install

    $ sudo apt-get install stunnel4

  2. enable stunnel

    			
$ vim /etc/default/stunnel4
# /etc/default/stunnel
# Julien LEMOINE <speedblue@debian.org>
# September 2003

# Change to one to enable stunnel
ENABLED=0
FILES="/etc/stunnel/*.conf"
OPTIONS=""

# Change to one to enable ppp restart scripts
PPP_RESTART=0

    edit /etc/default/stunnel4 file and change ENABLED=0 to ENABLED=1 to enable Stunnel

  3. config

    $ sudo vim /etc/stunnel/stunnel.conf
[pop3s]
accept  = 995
connect = 110

[imaps]
accept  = 993
connect = 143

[ssmtp]
accept  = 465
connect = 25

[https]
accept  = 443
connect = 80

  4. start

    $ sudo /etc/init.d/stunnel4 start
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8. Smooth Firewall 起始頁 第 47 章 VPN (Virtual Private Network)