diff --git a/testing/tests/ikev1/net2net-pgp-v3/hosts/moon/etc/strongswan.conf b/testing/tests/ikev1/net2net-pgp-v3/hosts/moon/etc/strongswan.conf
new file mode 100644
index 000000000..3787445e3
--- /dev/null
+++ b/testing/tests/ikev1/net2net-pgp-v3/hosts/moon/etc/strongswan.conf
@@ -0,0 +1,11 @@
+# /etc/strongswan.conf - strongSwan configuration file
+
+pluto {
+  load = sha1 sha2 md5 aes des hmac pem pgp gmp random curl
+}
+
+# pluto uses optimized DH exponent sizes (RFC 3526)
+
+libstrongswan {
+  dh_exponent_ansi_x9_42 = no
+}
diff --git a/testing/tests/ikev1/net2net-pgp-v3/hosts/sun/etc/strongswan.conf b/testing/tests/ikev1/net2net-pgp-v3/hosts/sun/etc/strongswan.conf
new file mode 100644
index 000000000..3787445e3
--- /dev/null
+++ b/testing/tests/ikev1/net2net-pgp-v3/hosts/sun/etc/strongswan.conf
@@ -0,0 +1,11 @@
+# /etc/strongswan.conf - strongSwan configuration file
+
+pluto {
+  load = sha1 sha2 md5 aes des hmac pem pgp gmp random curl
+}
+
+# pluto uses optimized DH exponent sizes (RFC 3526)
+
+libstrongswan {
+  dh_exponent_ansi_x9_42 = no
+}
diff --git a/testing/tests/ikev1/net2net-pgp-v4/hosts/moon/etc/strongswan.conf b/testing/tests/ikev1/net2net-pgp-v4/hosts/moon/etc/strongswan.conf
new file mode 100644
index 000000000..3787445e3
--- /dev/null
+++ b/testing/tests/ikev1/net2net-pgp-v4/hosts/moon/etc/strongswan.conf
@@ -0,0 +1,11 @@
+# /etc/strongswan.conf - strongSwan configuration file
+
+pluto {
+  load = sha1 sha2 md5 aes des hmac pem pgp gmp random curl
+}
+
+# pluto uses optimized DH exponent sizes (RFC 3526)
+
+libstrongswan {
+  dh_exponent_ansi_x9_42 = no
+}
diff --git a/testing/tests/ikev1/net2net-pgp-v4/hosts/sun/etc/strongswan.conf b/testing/tests/ikev1/net2net-pgp-v4/hosts/sun/etc/strongswan.conf
new file mode 100644
index 000000000..3787445e3
--- /dev/null
+++ b/testing/tests/ikev1/net2net-pgp-v4/hosts/sun/etc/strongswan.conf
@@ -0,0 +1,11 @@
+# /etc/strongswan.conf - strongSwan configuration file
+
+pluto {
+  load = sha1 sha2 md5 aes des hmac pem pgp gmp random curl
+}
+
+# pluto uses optimized DH exponent sizes (RFC 3526)
+
+libstrongswan {
+  dh_exponent_ansi_x9_42 = no
+}