diff --git a/types.go b/types.go
index 5d32526..17df3dc 100644
--- a/types.go
+++ b/types.go
@@ -5,10 +5,38 @@ import (
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
 )
 
+// keepalive for everything
+const KeepaliveSeconds = 21;
+const ExpiryDays = 28;
+const DefaultListenPort = 51820;
+
 // see https://github.com/WireGuard/wgctrl-go/blob/master/wgtypes/types.go for definitions
-type Peer struct {
-	Name string
+type PeerConfig struct {
+	// username of person running this host/router
+	Owner string
+	// Used to update DNS
+	Hostname string
+	// Description of what the host is and/or does
 	Description string
+
+	PublicKey wgtypes.Key
+	PresharedKey wgtypes.Key
+	Endpoint *net.UDPAddr
+	AllowedIPs []net.IPNet
+}
+
+type Peer struct {
+	// username of person running this host/router
+	Owner string
+	// Used to update DNS
+	Hostname string
+	// Description of what the host is and/or does
+	Description string
+	// whether last heartbeat/rxdata was received (50% margin)
+	Online bool
+	// if no data for x days, consider revoking access
+	Expired bool
+
 	PublicKey wgtypes.Key
 	PresharedKey wgtypes.Key
 	Endpoint *net.UDPAddr
@@ -17,3 +45,19 @@ type Peer struct {
 	TransmitBytes int64
 	AllowedIPs []net.IPNet
 }
+
+type DsnetConfig struct {
+	PrivateKey *wgtypes.Key
+	ListenPort *int
+	FirewallMark *int
+	Peers []PeerConfig
+}
+
+type Dsnet struct {
+	Name string
+	Type DeviceType
+	PrivateKey Key
+	PublicKey Key
+	ListenPort int
+	Peers []Peer
+}