diff --git a/const.go b/const.go
index 21bf8b1..0eddd6e 100644
--- a/const.go
+++ b/const.go
@@ -7,6 +7,7 @@ const (
 	// these end up in the config file
 	DEFAULT_INTERFACE_NAME = "dsnet"
 	DEFAULT_REPORT_FILE = "/var/lib/dsnet-report.json"
+	DEFAULT_LISTEN_PORT = 51820;
 
 	// keepalive always configured for everything
 	KEEPALIVE_SECONDS = 21;
@@ -14,6 +15,5 @@ const (
 	// when is a peer considered gone forever? (could remove)
 	EXPIRY_DAYS = 28;
 
-	LISTEN_PORT = 51820;
 
 )
diff --git a/init.go b/init.go
index ab43661..c662f65 100644
--- a/init.go
+++ b/init.go
@@ -1,10 +1,27 @@
 package dsnet
 
 import (
+	"net"
 
+	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
+	//"github.com/mikioh/ipaddr"
 )
 
 func Init() {
-	//conf := DsnetConfig {
-	//}
+	conf := DsnetConfig {
+		PrivateKey = wgtypes.GeneratePrivateKey(),
+		PresharedKey = wgtypes.GenerateKey(),
+		ListenPort = DEFAULT_LISTEN_PORT,
+		Network = getRandomNetwork(),
+		Domain = "dsnet"
+	}
+}
+
+// get a random /22 (1023 hosts) (or /24?)
+// TODO implement
+func getRandomNetwork() net.IPNet {
+	return net.IPNet {
+		IP{10,129,123,0},
+		Mask{255,255,255,240},
+	}
 }
diff --git a/types.go b/types.go
index 44718cf..97554c3 100644
--- a/types.go
+++ b/types.go
@@ -44,14 +44,12 @@ type Peer struct {
 
 type DsnetConfig struct {
 	PrivateKey *wgtypes.Key   `validate:"required,len=44"`
+	PresharedKey wgtypes.Key  `validate:"required,len=44"`
 	ListenPort *int           `validate:"gte=1024,lte=65535"`
-	FirewallMark *int
 	Peers []PeerConfig
 	// IP network from which to allocate automatic sequential addresses
-	//Network net.IPNet
-	// TODO: use ParseCIDR to parse config
 	// Network is chosen randomly when not specified
-	Network string            `validate:"required,cidr"`
+	Network net.IPNet         `validate:"required"`
 	// domain to append to hostnames. Relies on separate DNS server for
 	// resolution. Informational only.
 	Domain string             `validate:"required,gte=1,lte=255"`