diff --git a/dagconfig/params.go b/dagconfig/params.go
index fc0875bd6..2af6e9aa5 100644
--- a/dagconfig/params.go
+++ b/dagconfig/params.go
@@ -189,7 +189,7 @@ func (p *Params) NormalizeRPCServerAddress(addr string) (string, error) {
 // MainnetParams defines the network parameters for the main Kaspa network.
 var MainnetParams = Params{
 	K:           ghostdagK,
-	Name:        "mainnet",
+	Name:        "kaspa-mainnet",
 	Net:         domainmessage.Mainnet,
 	RPCPort:     "16110",
 	DefaultPort: "16111",
@@ -242,7 +242,7 @@ var MainnetParams = Params{
 // 3), this network is sometimes simply called "testnet".
 var RegressionNetParams = Params{
 	K:           ghostdagK,
-	Name:        "regtest",
+	Name:        "kaspa-regtest",
 	Net:         domainmessage.Regtest,
 	RPCPort:     "16210",
 	DefaultPort: "16211",
@@ -293,7 +293,7 @@ var RegressionNetParams = Params{
 // TestnetParams defines the network parameters for the test Kaspa network.
 var TestnetParams = Params{
 	K:           ghostdagK,
-	Name:        "testnet",
+	Name:        "kaspa-testnet",
 	Net:         domainmessage.Testnet,
 	RPCPort:     "16210",
 	DefaultPort: "16211",
@@ -350,7 +350,7 @@ var TestnetParams = Params{
 // just turn into another public testnet.
 var SimnetParams = Params{
 	K:           ghostdagK,
-	Name:        "simnet",
+	Name:        "kaspa-simnet",
 	Net:         domainmessage.Simnet,
 	RPCPort:     "16510",
 	DefaultPort: "16511",
@@ -399,7 +399,7 @@ var SimnetParams = Params{
 // DevnetParams defines the network parameters for the development Kaspa network.
 var DevnetParams = Params{
 	K:           ghostdagK,
-	Name:        "devnet",
+	Name:        "kaspa-devnet",
 	Net:         domainmessage.Devnet,
 	RPCPort:     "16610",
 	DefaultPort: "16611",
diff --git a/domainmessage/msgversion.go b/domainmessage/msgversion.go
index fb648c218..c1afc81bf 100644
--- a/domainmessage/msgversion.go
+++ b/domainmessage/msgversion.go
@@ -34,6 +34,9 @@ type MsgVersion struct {
 	// Version of the protocol the node is using.
 	ProtocolVersion uint32
 
+	// The peer's network (mainnet, testnet, etc.)
+	Network string
+
 	// Bitfield which identifies the enabled services.
 	Services ServiceFlag
 
@@ -81,13 +84,14 @@ func (msg *MsgVersion) Command() MessageCommand {
 // NewMsgVersion returns a new kaspa version message that conforms to the
 // Message interface using the passed parameters and defaults for the remaining
 // fields.
-func NewMsgVersion(addr *NetAddress, id *id.ID,
+func NewMsgVersion(addr *NetAddress, id *id.ID, network string,
 	selectedTipHash *daghash.Hash, subnetworkID *subnetworkid.SubnetworkID) *MsgVersion {
 
 	// Limit the timestamp to one millisecond precision since the protocol
 	// doesn't support better.
 	return &MsgVersion{
 		ProtocolVersion: ProtocolVersion,
+		Network:         network,
 		Services:        0,
 		Timestamp:       mstime.Now(),
 		Address:         addr,
diff --git a/domainmessage/msgversion_test.go b/domainmessage/msgversion_test.go
index a56719117..cb3317959 100644
--- a/domainmessage/msgversion_test.go
+++ b/domainmessage/msgversion_test.go
@@ -6,7 +6,7 @@ package domainmessage
 
 import (
 	"github.com/davecgh/go-spew/spew"
-	id "github.com/kaspanet/kaspad/netadapter/id"
+	"github.com/kaspanet/kaspad/netadapter/id"
 	"github.com/kaspanet/kaspad/util/daghash"
 	"net"
 	"reflect"
@@ -27,7 +27,7 @@ func TestVersion(t *testing.T) {
 	}
 
 	// Ensure we get the correct data back out.
-	msg := NewMsgVersion(me, generatedID, selectedTipHash, nil)
+	msg := NewMsgVersion(me, generatedID, "mainnet", selectedTipHash, nil)
 	if msg.ProtocolVersion != pver {
 		t.Errorf("NewMsgVersion: wrong protocol version - got %v, want %v",
 			msg.ProtocolVersion, pver)
diff --git a/go.mod b/go.mod
index b175b84ae..a2d4c92c7 100644
--- a/go.mod
+++ b/go.mod
@@ -7,7 +7,7 @@ require (
 	github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792
 	github.com/btcsuite/winsvc v1.0.0
 	github.com/davecgh/go-spew v1.1.1
-	github.com/golang/protobuf v1.4.1
+	github.com/golang/protobuf v1.4.2
 	github.com/golang/snappy v0.0.1 // indirect
 	github.com/jessevdk/go-flags v1.4.0
 	github.com/jrick/logrotate v1.0.0
@@ -19,6 +19,7 @@ require (
 	golang.org/x/sys v0.0.0-20190426135247-a129542de9ae // indirect
 	golang.org/x/text v0.3.2 // indirect
 	google.golang.org/grpc v1.30.0
+	google.golang.org/grpc/cmd/protoc-gen-go-grpc v0.0.0-20200805213715-b2f0b7930d06 // indirect
 	google.golang.org/protobuf v1.25.0
 	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
 	gopkg.in/yaml.v2 v2.2.2 // indirect
diff --git a/go.sum b/go.sum
index a74cde740..ab647f39e 100644
--- a/go.sum
+++ b/go.sum
@@ -30,6 +30,8 @@ github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:W
 github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
 github.com/golang/protobuf v1.4.1 h1:ZFgWrT+bLgsYPirOnRfKLYJLvssAegOj/hgyMFdJZe0=
 github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
+github.com/golang/protobuf v1.4.2 h1:+Z5KGCizgyZCbGh1KZqA0fcLLkwbsjIzS4aV2v7wJX0=
+github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
 github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db h1:woRePGFeVFfLKN/pOkfl+p/TAqKOfFu+7KPlMVpok/w=
 github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/golang/snappy v0.0.1 h1:Qgr9rKW7uDUkrbSmQeiDsGa8SjGyCOGtuasMWwvp2P4=
@@ -116,12 +118,16 @@ google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQ
 google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 google.golang.org/grpc v1.30.0 h1:M5a8xTlYTxwMn5ZFkwhRabsygDY5G8TYLyQDBxJNAxE=
 google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
+google.golang.org/grpc v1.31.0 h1:T7P4R73V3SSDPhH7WW7ATbfViLtmamH0DKrP3f9AuDI=
+google.golang.org/grpc/cmd/protoc-gen-go-grpc v0.0.0-20200805213715-b2f0b7930d06 h1:WOtSnnKPfWsgy//E8PUhDnNAj3o/3YqA6IAEKaj913o=
+google.golang.org/grpc/cmd/protoc-gen-go-grpc v0.0.0-20200805213715-b2f0b7930d06/go.mod h1:6Kw0yEErY5E/yWrBtf03jp27GLLJujG4z/JK95pnjjw=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
 google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
 google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
 google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.25.0 h1:Ejskq+SyPohKW+1uil0JJMtmHCgJPJ/qWTxr8qp+R4c=
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
diff --git a/netadapter/server/grpcserver/protowire/README.md b/netadapter/server/grpcserver/protowire/README.md
new file mode 100644
index 000000000..e48911c74
--- /dev/null
+++ b/netadapter/server/grpcserver/protowire/README.md
@@ -0,0 +1,7 @@
+protowire
+=========
+
+1. Download and place in your PATH: https://github.com/protocolbuffers/protobuf/releases/download/v3.12.3/protoc-3.12.3-linux-x86_64.zip
+2. `go get github.com/golang/protobuf/protoc-gen-go`
+3. `go get google.golang.org/grpc/cmd/protoc-gen-go-grpc`
+4. In the protowire directory: `go generate .`
\ No newline at end of file
diff --git a/netadapter/server/grpcserver/protowire/message_version.go b/netadapter/server/grpcserver/protowire/message_version.go
index daa6639f8..e8bdc7304 100644
--- a/netadapter/server/grpcserver/protowire/message_version.go
+++ b/netadapter/server/grpcserver/protowire/message_version.go
@@ -34,6 +34,7 @@ func (x *KaspadMessage_Version) toDomainMessage() (domainmessage.Message, error)
 
 	return &domainmessage.MsgVersion{
 		ProtocolVersion: x.Version.ProtocolVersion,
+		Network:         x.Version.Network,
 		Services:        domainmessage.ServiceFlag(x.Version.Services),
 		Timestamp:       mstime.UnixMilliseconds(x.Version.Timestamp),
 		Address:         address,
@@ -64,6 +65,7 @@ func (x *KaspadMessage_Version) fromDomainMessage(msgVersion *domainmessage.MsgV
 
 	x.Version = &VersionMessage{
 		ProtocolVersion: msgVersion.ProtocolVersion,
+		Network:         msgVersion.Network,
 		Services:        uint64(msgVersion.Services),
 		Timestamp:       msgVersion.Timestamp.UnixMilliseconds(),
 		Address:         address,
diff --git a/netadapter/server/grpcserver/protowire/messages.pb.go b/netadapter/server/grpcserver/protowire/messages.pb.go
index efb5c12f2..cfe6f5dd6 100644
--- a/netadapter/server/grpcserver/protowire/messages.pb.go
+++ b/netadapter/server/grpcserver/protowire/messages.pb.go
@@ -1854,6 +1854,7 @@ type VersionMessage struct {
 	SelectedTipHash *Hash         `protobuf:"bytes,7,opt,name=selectedTipHash,proto3" json:"selectedTipHash,omitempty"`
 	DisableRelayTx  bool          `protobuf:"varint,8,opt,name=disableRelayTx,proto3" json:"disableRelayTx,omitempty"`
 	SubnetworkID    *SubnetworkID `protobuf:"bytes,9,opt,name=subnetworkID,proto3" json:"subnetworkID,omitempty"`
+	Network         string        `protobuf:"bytes,10,opt,name=network,proto3" json:"network,omitempty"`
 }
 
 func (x *VersionMessage) Reset() {
@@ -1951,6 +1952,13 @@ func (x *VersionMessage) GetSubnetworkID() *SubnetworkID {
 	return nil
 }
 
+func (x *VersionMessage) GetNetwork() string {
+	if x != nil {
+		return x.Network
+	}
+	return ""
+}
+
 var File_messages_proto protoreflect.FileDescriptor
 
 var file_messages_proto_rawDesc = []byte{
@@ -2214,7 +2222,7 @@ var file_messages_proto_rawDesc = []byte{
 	0x0b, 0x32, 0x0f, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x77, 0x69, 0x72, 0x65, 0x2e, 0x48, 0x61,
 	0x73, 0x68, 0x52, 0x0f, 0x73, 0x65, 0x6c, 0x65, 0x63, 0x74, 0x65, 0x64, 0x54, 0x69, 0x70, 0x48,
 	0x61, 0x73, 0x68, 0x22, 0x0f, 0x0a, 0x0d, 0x56, 0x65, 0x72, 0x61, 0x63, 0x6b, 0x4d, 0x65, 0x73,
-	0x73, 0x61, 0x67, 0x65, 0x22, 0xf3, 0x02, 0x0a, 0x0e, 0x56, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e,
+	0x73, 0x61, 0x67, 0x65, 0x22, 0x8d, 0x03, 0x0a, 0x0e, 0x56, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e,
 	0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x12, 0x28, 0x0a, 0x0f, 0x70, 0x72, 0x6f, 0x74, 0x6f,
 	0x63, 0x6f, 0x6c, 0x56, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0d,
 	0x52, 0x0f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x56, 0x65, 0x72, 0x73, 0x69, 0x6f,
@@ -2237,15 +2245,17 @@ var file_messages_proto_rawDesc = []byte{
 	0x0c, 0x73, 0x75, 0x62, 0x6e, 0x65, 0x74, 0x77, 0x6f, 0x72, 0x6b, 0x49, 0x44, 0x18, 0x09, 0x20,
 	0x01, 0x28, 0x0b, 0x32, 0x17, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x77, 0x69, 0x72, 0x65, 0x2e,
 	0x53, 0x75, 0x62, 0x6e, 0x65, 0x74, 0x77, 0x6f, 0x72, 0x6b, 0x49, 0x44, 0x52, 0x0c, 0x73, 0x75,
-	0x62, 0x6e, 0x65, 0x74, 0x77, 0x6f, 0x72, 0x6b, 0x49, 0x44, 0x32, 0x50, 0x0a, 0x03, 0x50, 0x32,
-	0x50, 0x12, 0x49, 0x0a, 0x0d, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x53, 0x74, 0x72, 0x65,
-	0x61, 0x6d, 0x12, 0x18, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x77, 0x69, 0x72, 0x65, 0x2e, 0x4b,
-	0x61, 0x73, 0x70, 0x61, 0x64, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x1a, 0x18, 0x2e, 0x70,
+	0x62, 0x6e, 0x65, 0x74, 0x77, 0x6f, 0x72, 0x6b, 0x49, 0x44, 0x12, 0x18, 0x0a, 0x07, 0x6e, 0x65,
+	0x74, 0x77, 0x6f, 0x72, 0x6b, 0x18, 0x0a, 0x20, 0x01, 0x28, 0x09, 0x52, 0x07, 0x6e, 0x65, 0x74,
+	0x77, 0x6f, 0x72, 0x6b, 0x32, 0x50, 0x0a, 0x03, 0x50, 0x32, 0x50, 0x12, 0x49, 0x0a, 0x0d, 0x4d,
+	0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x53, 0x74, 0x72, 0x65, 0x61, 0x6d, 0x12, 0x18, 0x2e, 0x70,
 	0x72, 0x6f, 0x74, 0x6f, 0x77, 0x69, 0x72, 0x65, 0x2e, 0x4b, 0x61, 0x73, 0x70, 0x61, 0x64, 0x4d,
-	0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x22, 0x00, 0x28, 0x01, 0x30, 0x01, 0x42, 0x26, 0x5a, 0x24,
-	0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x6b, 0x61, 0x73, 0x70, 0x61,
-	0x6e, 0x65, 0x74, 0x2f, 0x6b, 0x61, 0x73, 0x70, 0x61, 0x64, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f,
-	0x77, 0x69, 0x72, 0x65, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x1a, 0x18, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x77, 0x69,
+	0x72, 0x65, 0x2e, 0x4b, 0x61, 0x73, 0x70, 0x61, 0x64, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65,
+	0x22, 0x00, 0x28, 0x01, 0x30, 0x01, 0x42, 0x26, 0x5a, 0x24, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62,
+	0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x6b, 0x61, 0x73, 0x70, 0x61, 0x6e, 0x65, 0x74, 0x2f, 0x6b, 0x61,
+	0x73, 0x70, 0x61, 0x64, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x77, 0x69, 0x72, 0x65, 0x62, 0x06,
+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
diff --git a/netadapter/server/grpcserver/protowire/messages.proto b/netadapter/server/grpcserver/protowire/messages.proto
index 0cdaa6ba8..c4d76b93a 100644
--- a/netadapter/server/grpcserver/protowire/messages.proto
+++ b/netadapter/server/grpcserver/protowire/messages.proto
@@ -209,6 +209,7 @@ message VersionMessage{
   Hash selectedTipHash = 7;
   bool disableRelayTx = 8;
   SubnetworkID subnetworkID = 9;
+  string network = 10;
 }
 // VersionMessage end
 
diff --git a/protocol/flows/handshake/receiveversion.go b/protocol/flows/handshake/receiveversion.go
index 6715557ef..a7e56579c 100644
--- a/protocol/flows/handshake/receiveversion.go
+++ b/protocol/flows/handshake/receiveversion.go
@@ -55,6 +55,11 @@ func (flow *receiveVersionFlow) start() (*domainmessage.NetAddress, error) {
 		return nil, protocolerrors.New(true, "connected to self")
 	}
 
+	// Disconnect and ban peers from a different network
+	if msgVersion.Network != flow.Config().ActiveNetParams.Name {
+		return nil, protocolerrors.Errorf(true, "wrong network")
+	}
+
 	// Notify and disconnect clients that have a protocol version that is
 	// too old.
 	//
diff --git a/protocol/flows/handshake/sendversion.go b/protocol/flows/handshake/sendversion.go
index 108449b71..6e721d013 100644
--- a/protocol/flows/handshake/sendversion.go
+++ b/protocol/flows/handshake/sendversion.go
@@ -49,7 +49,8 @@ func (flow *sendVersionFlow) start() error {
 	if err != nil {
 		return err
 	}
-	msg := domainmessage.NewMsgVersion(localAddress, flow.NetAdapter().ID(), selectedTipHash, subnetworkID)
+	msg := domainmessage.NewMsgVersion(localAddress, flow.NetAdapter().ID(),
+		flow.Config().ActiveNetParams.Name, selectedTipHash, subnetworkID)
 	msg.AddUserAgent(userAgentName, userAgentVersion, flow.Config().UserAgentComments...)
 
 	// Advertise the services flag