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Update IKEv2 script

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- Add a variable VPN_DNS_NAME, which can be defined when running the
  IKEv2 script in auto mode, to set up IKEv2 using a DNS name instead
  of an IP address for the VPN server. The DNS name must be a fully
  qualified domain name (FQDN). Example:
  VPN_DNS_NAME=vpn.example.com bash ikev2.sh --auto
- Minor cleanup
This commit is contained in:
hwdsl2 2021-02-09 22:32:26 -06:00
parent ad1c635ca3
commit c83148245b
1 changed files with 16 additions and 6 deletions
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22
extras/ikev2setup.sh
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@ -184,6 +184,10 @@ check_arguments() {
fi fi
} }
check_server_dns_name() {
check_dns_name "$VPN_DNS_NAME" || exiterr "Invalid DNS name. 'VPN_DNS_NAME' must be a fully qualified domain name (FQDN)."
}
check_ca_cert_exists() { check_ca_cert_exists() {
if certutil -L -d sql:/etc/ipsec.d -n "IKEv2 VPN CA" >/dev/null 2>&1; then if certutil -L -d sql:/etc/ipsec.d -n "IKEv2 VPN CA" >/dev/null 2>&1; then
exiterr "Certificate 'IKEv2 VPN CA' already exists." exiterr "Certificate 'IKEv2 VPN CA' already exists."
@ -296,8 +300,8 @@ get_server_ip() {
} }
get_server_address() { get_server_address() {
server_addr=$(grep "leftcert=" /etc/ipsec.d/ikev2.conf | cut -f2 -d=) server_addr=$(grep -s "leftcert=" /etc/ipsec.d/ikev2.conf | cut -f2 -d=)
[ -z "$server_addr" ] && server_addr=$(grep "leftcert=" /etc/ipsec.conf | cut -f2 -d=) [ -z "$server_addr" ] && server_addr=$(grep -s "leftcert=" /etc/ipsec.conf | cut -f2 -d=)
check_ip "$server_addr" || check_dns_name "$server_addr" || exiterr "Could not get VPN server address." check_ip "$server_addr" || check_dns_name "$server_addr" || exiterr "Could not get VPN server address."
} }
@ -1329,10 +1333,16 @@ ikev2setup() {
confirm_setup_options confirm_setup_options
else else
show_start_message show_start_message
use_dns_name=0 if [ -n "$VPN_DNS_NAME" ]; then
get_server_ip check_server_dns_name
check_ip "$public_ip" || exiterr "Cannot detect this server's public IP." use_dns_name=1
server_addr="$public_ip" server_addr="$VPN_DNS_NAME"
else
use_dns_name=0
get_server_ip
check_ip "$public_ip" || exiterr "Cannot detect this server's public IP."
server_addr="$public_ip"
fi
check_server_cert_exists check_server_cert_exists
client_name=vpnclient client_name=vpnclient
check_client_cert_exists check_client_cert_exists