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8c0940f63b
setup-ipsec-vpn/docs/uninstall.md
hwdsl2 8c0940f63b Update docs 
- Improve IKEv2 docs. The strongSwan Android VPN client requires
  an "IP address" in the VPN server certificate's subjectAltName field
  in addition to "DNS name", when connecting using the server's IP.
  The certutil commands have been updated to add this field.
- Other improvements to docs
2017-02-05 14:48:11 -06:00

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Uninstall the VPN

Read this in other languages: English, 简体中文.

Follow these steps to remove the VPN. Commands must be run as root, or with sudo.

Steps

First step

service ipsec stop
service xl2tpd stop
rm -rf /usr/local/sbin/ipsec /usr/local/libexec/ipsec
rm -f /etc/init/ipsec.conf /lib/systemd/system/ipsec.service \
      /etc/init.d/ipsec /usr/lib/systemd/system/ipsec.service

Second step

Ubuntu/Debian

apt-get purge xl2tpd

CentOS/RHEL

yum remove xl2tpd

Third step

Ubuntu/Debian

Edit /etc/iptables.rules and remove unneeded rules.
Your original rules (if any) are backed up as /etc/iptables.rules.old-date-time.
In addition, edit /etc/iptables/rules.v4 if the file exists.

CentOS/RHEL

Edit /etc/sysconfig/iptables and remove unneeded rules.
Your original rules (if any) are backed up as /etc/sysconfig/iptables.old-date-time.

Fourth step

Edit /etc/sysctl.conf and remove the lines after # Added by hwdsl2 VPN script.
Edit /etc/rc.local and remove the lines after # Added by hwdsl2 VPN script. DO NOT remove exit 0 (if any).

Optional

Note: This step is optional.

Remove these config files:

  • /etc/ipsec.conf*
  • /etc/ipsec.secrets*
  • /etc/ppp/chap-secrets*
  • /etc/ppp/options.xl2tpd*
  • /etc/pam.d/pluto
  • /etc/sysconfig/pluto
  • /etc/default/pluto
  • /etc/ipsec.d (directory)
  • /etc/xl2tpd (directory)

Copy and paste for fast removal:

rm -f /etc/ipsec.conf* /etc/ipsec.secrets* /etc/ppp/chap-secrets* /etc/ppp/options.xl2tpd* \
      /etc/pam.d/pluto /etc/sysconfig/pluto /etc/default/pluto
rm -rf /etc/ipsec.d /etc/xl2tpd

When finished

Reboot your server.