diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/login/ClientOutOfDateCodec.kt b/protocol/src/main/kotlin/org/openrs2/protocol/login/ClientOutOfDateCodec.kt
new file mode 100644
index 00000000..08c6ad3b
--- /dev/null
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/login/ClientOutOfDateCodec.kt
@@ -0,0 +1,8 @@
+package org.openrs2.protocol.login
+
+import org.openrs2.protocol.EmptyPacketCodec
+
+public object ClientOutOfDateCodec : EmptyPacketCodec<LoginResponse.ClientOutOfDate>(
+    packet = LoginResponse.ClientOutOfDate,
+    opcode = 6
+)
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/login/InitJs5RemoteConnectionCodec.kt b/protocol/src/main/kotlin/org/openrs2/protocol/login/InitJs5RemoteConnectionCodec.kt
new file mode 100644
index 00000000..7aec2c71
--- /dev/null
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/login/InitJs5RemoteConnectionCodec.kt
@@ -0,0 +1,19 @@
+package org.openrs2.protocol.login
+
+import io.netty.buffer.ByteBuf
+import org.openrs2.protocol.PacketCodec
+
+public object InitJs5RemoteConnectionCodec : PacketCodec<LoginRequest.InitJs5RemoteConnection>(
+    type = LoginRequest.InitJs5RemoteConnection::class.java,
+    opcode = 15,
+    length = 4
+) {
+    override fun decode(input: ByteBuf): LoginRequest.InitJs5RemoteConnection {
+        val version = input.readInt()
+        return LoginRequest.InitJs5RemoteConnection(version)
+    }
+
+    override fun encode(input: LoginRequest.InitJs5RemoteConnection, output: ByteBuf) {
+        output.writeInt(input.version)
+    }
+}
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/login/IpLimitCodec.kt b/protocol/src/main/kotlin/org/openrs2/protocol/login/IpLimitCodec.kt
new file mode 100644
index 00000000..686c003a
--- /dev/null
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/login/IpLimitCodec.kt
@@ -0,0 +1,8 @@
+package org.openrs2.protocol.login
+
+import org.openrs2.protocol.EmptyPacketCodec
+
+public object IpLimitCodec : EmptyPacketCodec<LoginResponse.IpLimit>(
+    packet = LoginResponse.IpLimit,
+    opcode = 9
+)
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/login/Js5OkCodec.kt b/protocol/src/main/kotlin/org/openrs2/protocol/login/Js5OkCodec.kt
new file mode 100644
index 00000000..3cfa4f43
--- /dev/null
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/login/Js5OkCodec.kt
@@ -0,0 +1,8 @@
+package org.openrs2.protocol.login
+
+import org.openrs2.protocol.EmptyPacketCodec
+
+public object Js5OkCodec : EmptyPacketCodec<LoginResponse.Js5Ok>(
+    packet = LoginResponse.Js5Ok,
+    opcode = 0
+)
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/login/LoginRequest.kt b/protocol/src/main/kotlin/org/openrs2/protocol/login/LoginRequest.kt
new file mode 100644
index 00000000..16ae65bb
--- /dev/null
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/login/LoginRequest.kt
@@ -0,0 +1,7 @@
+package org.openrs2.protocol.login
+
+import org.openrs2.protocol.Packet
+
+public sealed class LoginRequest : Packet {
+    public class InitJs5RemoteConnection(public val version: Int) : LoginRequest()
+}
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/login/LoginResponse.kt b/protocol/src/main/kotlin/org/openrs2/protocol/login/LoginResponse.kt
new file mode 100644
index 00000000..2c03f481
--- /dev/null
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/login/LoginResponse.kt
@@ -0,0 +1,10 @@
+package org.openrs2.protocol.login
+
+import org.openrs2.protocol.Packet
+
+public sealed class LoginResponse : Packet {
+    public object Js5Ok : LoginResponse()
+    public object ClientOutOfDate : LoginResponse()
+    public object ServerFull : LoginResponse()
+    public object IpLimit : LoginResponse()
+}
diff --git a/protocol/src/main/kotlin/org/openrs2/protocol/login/ServerFullCodec.kt b/protocol/src/main/kotlin/org/openrs2/protocol/login/ServerFullCodec.kt
new file mode 100644
index 00000000..1bc4a1ab
--- /dev/null
+++ b/protocol/src/main/kotlin/org/openrs2/protocol/login/ServerFullCodec.kt
@@ -0,0 +1,8 @@
+package org.openrs2.protocol.login
+
+import org.openrs2.protocol.EmptyPacketCodec
+
+public object ServerFullCodec : EmptyPacketCodec<LoginResponse.ServerFull>(
+    packet = LoginResponse.ServerFull,
+    opcode = 7
+)