Marown/setup-ipsec-vpn
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setup-ipsec-vpn/docs/uninstall.md
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Uninstall IPsec/L2TP VPN

To remove the VPN:

First step

service ipsec stop
service xl2tpd stop
rm -rf /usr/local/sbin/ipsec /usr/local/libexec/ipsec
rm -f /etc/init.d/ipsec /lib/systemd/system/ipsec.service
rm -rf /opt/src/libreswan-*

Second step

For Ubuntu/Debian:

apt-get remove xl2tpd

For CentOS/RHEL:

yum remove xl2tpd

Third step

For 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. If using IPv6, also edit /etc/ip6tables.rules and /etc/iptables/rules.v6.

For CentOS/RHEL:

Edit /etc/sysconfig/iptables and /etc/sysconfig/ip6tables

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, except exit 0 (if any)

Optional

Remove these config files:

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

copy && paste for fast remove:

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

When finished

Reboot your server.