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Improve IKEv2 setup

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- Increase RSA key size from the default 2048 bits to 3072 bits
- Use fixed delay between certutil calls, a random delay is not needed
- Update docs
This commit is contained in:
hwdsl2 2021-05-01 14:46:12 -05:00
parent 21a72d6232
commit ee409250d8
3 changed files with 12 additions and 12 deletions
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6
docs/ikev2-howto-zh.md
View File

@ -610,7 +610,7 @@ sudo chmod 600 ikev2vpnca.cer vpnclient.cer vpnclient.key
certutil -z <(head -c 1024 /dev/urandom) \
-S -x -n "IKEv2 VPN CA" \
-s "O=IKEv2 VPN,CN=IKEv2 VPN CA" \
-k rsa -v 120 \
-k rsa -g 3072 -v 120 \
-d sql:/etc/ipsec.d -t "CT,," -2
```
@ -632,7 +632,7 @@ sudo chmod 600 ikev2vpnca.cer vpnclient.cer vpnclient.key
certutil -z <(head -c 1024 /dev/urandom) \
-S -c "IKEv2 VPN CA" -n "$PUBLIC_IP" \
-s "O=IKEv2 VPN,CN=$PUBLIC_IP" \
-k rsa -v 120 \
-k rsa -g 3072 -v 120 \
-d sql:/etc/ipsec.d -t ",," \
--keyUsage digitalSignature,keyEncipherment \
--extKeyUsage serverAuth \
@ -653,7 +653,7 @@ sudo chmod 600 ikev2vpnca.cer vpnclient.cer vpnclient.key
certutil -z <(head -c 1024 /dev/urandom) \
-S -c "IKEv2 VPN CA" -n "vpnclient" \
-s "O=IKEv2 VPN,CN=vpnclient" \
-k rsa -v 120 \
-k rsa -g 3072 -v 120 \
-d sql:/etc/ipsec.d -t ",," \
--keyUsage digitalSignature,keyEncipherment \
--extKeyUsage serverAuth,clientAuth -8 "vpnclient"

6
docs/ikev2-howto.md
View File

@ -612,7 +612,7 @@ The following example shows how to manually configure IKEv2 with Libreswan. Comm
certutil -z <(head -c 1024 /dev/urandom) \
-S -x -n "IKEv2 VPN CA" \
-s "O=IKEv2 VPN,CN=IKEv2 VPN CA" \
-k rsa -v 120 \
-k rsa -g 3072 -v 120 \
-d sql:/etc/ipsec.d -t "CT,," -2
```
@ -634,7 +634,7 @@ The following example shows how to manually configure IKEv2 with Libreswan. Comm
certutil -z <(head -c 1024 /dev/urandom) \
-S -c "IKEv2 VPN CA" -n "$PUBLIC_IP" \
-s "O=IKEv2 VPN,CN=$PUBLIC_IP" \
-k rsa -v 120 \
-k rsa -g 3072 -v 120 \
-d sql:/etc/ipsec.d -t ",," \
--keyUsage digitalSignature,keyEncipherment \
--extKeyUsage serverAuth \
@ -655,7 +655,7 @@ The following example shows how to manually configure IKEv2 with Libreswan. Comm
certutil -z <(head -c 1024 /dev/urandom) \
-S -c "IKEv2 VPN CA" -n "vpnclient" \
-s "O=IKEv2 VPN,CN=vpnclient" \
-k rsa -v 120 \
-k rsa -g 3072 -v 120 \
-d sql:/etc/ipsec.d -t ",," \
--keyUsage digitalSignature,keyEncipherment \
--extKeyUsage serverAuth,clientAuth -8 "vpnclient"

12
extras/ikev2setup.sh
View File

@ -646,12 +646,12 @@ EOF
create_client_cert() {
bigecho2 "Generating client certificate..."
sleep $((RANDOM % 3 + 1))
sleep 1
certutil -z <(head -c 1024 /dev/urandom) \
-S -c "IKEv2 VPN CA" -n "$client_name" \
-s "O=IKEv2 VPN,CN=$client_name" \
-k rsa -v "$client_validity" \
-k rsa -g 3072 -v "$client_validity" \
-d sql:/etc/ipsec.d -t ",," \
--keyUsage digitalSignature,keyEncipherment \
--extKeyUsage serverAuth,clientAuth -8 "$client_name" >/dev/null 2>&1 || exiterr "Failed to create client certificate."
@ -923,20 +923,20 @@ create_ca_server_certs() {
certutil -z <(head -c 1024 /dev/urandom) \
-S -x -n "IKEv2 VPN CA" \
-s "O=IKEv2 VPN,CN=IKEv2 VPN CA" \
-k rsa -v 120 \
-k rsa -g 3072 -v 120 \
-d sql:/etc/ipsec.d -t "CT,," -2 >/dev/null 2>&1 <<ANSWERS || exiterr "Failed to create CA certificate."
y
N
ANSWERS
sleep $((RANDOM % 3 + 1))
sleep 1
if [ "$use_dns_name" = "1" ]; then
certutil -z <(head -c 1024 /dev/urandom) \
-S -c "IKEv2 VPN CA" -n "$server_addr" \
-s "O=IKEv2 VPN,CN=$server_addr" \
-k rsa -v 120 \
-k rsa -g 3072 -v 120 \
-d sql:/etc/ipsec.d -t ",," \
--keyUsage digitalSignature,keyEncipherment \
--extKeyUsage serverAuth \
@ -945,7 +945,7 @@ ANSWERS
certutil -z <(head -c 1024 /dev/urandom) \
-S -c "IKEv2 VPN CA" -n "$server_addr" \
-s "O=IKEv2 VPN,CN=$server_addr" \
-k rsa -v 120 \
-k rsa -g 3072 -v 120 \
-d sql:/etc/ipsec.d -t ",," \
--keyUsage digitalSignature,keyEncipherment \
--extKeyUsage serverAuth \