+strongswan-4.1.1
+----------------
+
+- Server side cookie support. If to may IKE_SAs are in CONNECTING state,
+ cookies are enabled and protect against DoS attacks with faked source
+ addresses. Number of IKE_SAs in CONNECTING state is also limited per
+ peer address to avoid resource exhaustion. IKE_SA_INIT messages are
+ compared to properly detect retransmissions and incoming retransmits are
+ detected even if the IKE_SA is blocked (e.g. doing OCSP fetches).
+
strongswan-4.1.0
----------------