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Improve VPN ciphers

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- Improve security by removing support for modp1536 (DH group 5),
  which is less secure and rarely used by VPN clients. To do this,
  we specify modp2048 on the "ike=" line in ipsec.conf.
This commit is contained in:
hwdsl2 2022-09-30 01:11:18 -05:00
parent 4b15a5d2f9
commit 6e596825e2
8 changed files with 8 additions and 8 deletions
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2
extras/vpnupgrade_alpine.sh
View File

@ -209,7 +209,7 @@ update_ikev2_script() {
update_config() {
bigecho "Updating VPN configuration..."
IKE_NEW=" ike=aes256-sha2,aes128-sha2,aes256-sha1,aes128-sha1"
IKE_NEW=" ike=aes256-sha2;modp2048,aes128-sha2;modp2048,aes256-sha1;modp2048,aes128-sha1;modp2048"
PHASE2_NEW=" phase2alg=aes_gcm-null,aes128-sha1,aes256-sha1,aes256-sha2_512,aes128-sha2,aes256-sha2"
if uname -m | grep -qi '^arm'; then
if ! modprobe -q sha512; then

2
extras/vpnupgrade_amzn.sh
View File

@ -203,7 +203,7 @@ update_ikev2_script() {
update_config() {
bigecho "Updating VPN configuration..."
IKE_NEW=" ike=aes256-sha2,aes128-sha2,aes256-sha1,aes128-sha1"
IKE_NEW=" ike=aes256-sha2;modp2048,aes128-sha2;modp2048,aes256-sha1;modp2048,aes128-sha1;modp2048"
PHASE2_NEW=" phase2alg=aes_gcm-null,aes128-sha1,aes256-sha1,aes256-sha2_512,aes128-sha2,aes256-sha2"
dns_state=0
DNS_SRV1=$(grep "modecfgdns1=" /etc/ipsec.conf | head -n 1 | cut -d '=' -f 2)

2
extras/vpnupgrade_centos.sh
View File

@ -255,7 +255,7 @@ update_ikev2_script() {
update_config() {
bigecho "Updating VPN configuration..."
IKE_NEW=" ike=aes256-sha2,aes128-sha2,aes256-sha1,aes128-sha1"
IKE_NEW=" ike=aes256-sha2;modp2048,aes128-sha2;modp2048,aes256-sha1;modp2048,aes128-sha1;modp2048"
PHASE2_NEW=" phase2alg=aes_gcm-null,aes128-sha1,aes256-sha1,aes256-sha2_512,aes128-sha2,aes256-sha2"
dns_state=0
DNS_SRV1=$(grep "modecfgdns1=" /etc/ipsec.conf | head -n 1 | cut -d '=' -f 2)

2
extras/vpnupgrade_ubuntu.sh
View File

@ -239,7 +239,7 @@ update_ikev2_script() {
update_config() {
bigecho "Updating VPN configuration..."
IKE_NEW=" ike=aes256-sha2,aes128-sha2,aes256-sha1,aes128-sha1"
IKE_NEW=" ike=aes256-sha2;modp2048,aes128-sha2;modp2048,aes256-sha1;modp2048,aes128-sha1;modp2048"
PHASE2_NEW=" phase2alg=aes_gcm-null,aes128-sha1,aes256-sha1,aes256-sha2_512,aes128-sha2,aes256-sha2"
if uname -m | grep -qi '^arm'; then
if ! modprobe -q sha512; then

2
vpnsetup_alpine.sh
View File

@ -337,7 +337,7 @@ conn shared
dpdtimeout=300
dpdaction=clear
ikev2=never
ike=aes256-sha2,aes128-sha2,aes256-sha1,aes128-sha1
ike=aes256-sha2;modp2048,aes128-sha2;modp2048,aes256-sha1;modp2048,aes128-sha1;modp2048
phase2alg=aes_gcm-null,aes128-sha1,aes256-sha1,aes256-sha2_512,aes128-sha2,aes256-sha2
ikelifetime=24h
salifetime=24h

2
vpnsetup_amzn.sh
View File

@ -353,7 +353,7 @@ conn shared
dpdtimeout=300
dpdaction=clear
ikev2=never
ike=aes256-sha2,aes128-sha2,aes256-sha1,aes128-sha1
ike=aes256-sha2;modp2048,aes128-sha2;modp2048,aes256-sha1;modp2048,aes128-sha1;modp2048
phase2alg=aes_gcm-null,aes128-sha1,aes256-sha1,aes256-sha2_512,aes128-sha2,aes256-sha2
ikelifetime=24h
salifetime=24h

2
vpnsetup_centos.sh
View File

@ -453,7 +453,7 @@ conn shared
dpdtimeout=300
dpdaction=clear
ikev2=never
ike=aes256-sha2,aes128-sha2,aes256-sha1,aes128-sha1
ike=aes256-sha2;modp2048,aes128-sha2;modp2048,aes256-sha1;modp2048,aes128-sha1;modp2048
phase2alg=aes_gcm-null,aes128-sha1,aes256-sha1,aes256-sha2_512,aes128-sha2,aes256-sha2
ikelifetime=24h
salifetime=24h

2
vpnsetup_ubuntu.sh
View File

@ -398,7 +398,7 @@ conn shared
dpdtimeout=300
dpdaction=clear
ikev2=never
ike=aes256-sha2,aes128-sha2,aes256-sha1,aes128-sha1
ike=aes256-sha2;modp2048,aes128-sha2;modp2048,aes256-sha1;modp2048,aes128-sha1;modp2048
phase2alg=aes_gcm-null,aes128-sha1,aes256-sha1,aes256-sha2_512,aes128-sha2,aes256-sha2
ikelifetime=24h
salifetime=24h