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From 39925f090c21ab571ebc6ec250696f7f7093a2a6 Mon Sep 17 00:00:00 2001
From: Will Page <Will.Page@ni.com>
Date: Wed, 30 Aug 2017 18:14:00 -0700
Subject: [PATCH 1/1] Reduce lifetime value to widely-compatible value
Current proposed lifetime value (2147483 seconds, which equates to
MAXINT ms, or ~25 days) is rejected by Fortigate vpn devices because
"peer SA proposal does not match local policy". It seems default
policy for these devices constrains lifetime where similar VPN devices
don't.
Reducing the lifetime from its current value to 28800 (exactly 8 hours)
causes it to start working with fortigate devices.
---
vpnc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/vpnc.c b/vpnc.c
index 36dd0f3..3e0fcba 100644
--- a/vpnc.c
+++ b/vpnc.c
@@ -1135,7 +1135,7 @@ static struct isakmp_attribute *make_transform_ike(int dh_group, int crypt, int
a->af = isakmp_attr_lots;
a->u.lots.length = 4;
a->u.lots.data = xallocc(a->u.lots.length);
- *((uint32_t *) a->u.lots.data) = htonl(2147483);
+ *((uint32_t *) a->u.lots.data) = htonl(28800);
a = new_isakmp_attribute_16(IKE_ATTRIB_LIFE_TYPE, IKE_LIFE_TYPE_SECONDS, a);
a = new_isakmp_attribute_16(IKE_ATTRIB_AUTH_METHOD, auth, a);
a = new_isakmp_attribute_16(IKE_ATTRIB_GROUP_DESC, dh_group, a);
@@ -2561,7 +2561,7 @@ static struct isakmp_attribute *make_transform_ipsec(struct sa_block *s, int dh_
a->af = isakmp_attr_lots;
a->u.lots.length = 4;
a->u.lots.data = xallocc(a->u.lots.length);
- *((uint32_t *) a->u.lots.data) = htonl(2147483);
+ *((uint32_t *) a->u.lots.data) = htonl(28800);
a = new_isakmp_attribute_16(ISAKMP_IPSEC_ATTRIB_SA_LIFE_TYPE, IPSEC_LIFE_SECONDS, a);
if (dh_group)
--
2.7.4
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