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Azure only supports DH Group 2 by default and StrongSwan has deprecated it #40

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Azure only supports DH Group 2 by default and StrongSwan has deprecated it #40

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9 changes: 8 additions & 1 deletion StrongSwan/5.3.5/ipsec.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -11,4 +11,11 @@ conn azure
right=4.3.2.1 #Azure Dynamic Gateway's IP address
rightsubnet=10.11.0.0/16,10.12.0.0/16 #Azure VNET address space
auto=route
keyexchange=ikev2 # Mandatory for Dynamic / Route-based gateway
keyexchange=ikev2 # Mandatory for Dynamic / Route-based gateway
# By Default Azure VPN gateways only accept DH Group 2 (-modp1024). Since StrongSwan has
# deprecated DH Group 2 we need to manually add it in.
# SECURITY WARNING:
# DH Group 2 is now considered insecure, you should add a Connection policy on
# Azure side that uses DH Group 24 (-modp2048s256) or a more secure one (EC).
# Use strongswan stroke up <connection_name> to see if proposals match.
ike=aes256-sha384-modp1024