diff --git a/cmds/pass.cpp b/cmds/pass.cpp
new file mode 100644
index 0000000..f0256a6
--- /dev/null
+++ b/cmds/pass.cpp
@@ -0,0 +1,32 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   pass.cpp                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: aortigos <aortigos@student.42malaga.com    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2026/05/10 22:06:22 by aortigos          #+#    #+#             */
+/*   Updated: 2026/05/10 22:39:03 by aortigos         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "../Server/Server.hpp"
+
+void	Server::pass_cmd(User &client, std::istringstream &ss)
+{
+	std::string		args;
+
+	ss >> args;
+	if (client.isAuthenticated())
+	{
+		std::string res = "You are already authenticated";
+		send(client.getFd(), res.c_str(), res.size(), 0);
+		return ;
+	}
+	if (this->password_ == args)
+		client->authenticated = true;
+	else {
+		std::string res = "Invalid password";
+		send(client.getFd(), res.c_str(), res.size(), 0);
+	}
+}
\ No newline at end of file
diff --git a/tasks.md b/tasks.md
index c934488..4fb28d8 100644
--- a/tasks.md
+++ b/tasks.md
@@ -29,24 +29,27 @@ Represents a connected IRC client.
 
 ### First stage
 
-- Server starts
-- It accepts two params, ./ircserv <port> <password>
-- The server accepts one user, user can send messages and we can see from server
-- Only 1 poll()
+- [✓] Server starts
+- [✓] It accepts two params, ./ircserv <port> <password>
+- [✓] The server accepts one user, user can send messages and we can see from server
+- [✓] Only 1 poll()
 
 ### Second stage
 
-- Server can handle multiple clients simultaneously
+- [✓] Server can handle multiple clients simultaneously
+- [ ] Manage SO_REUSEADDR (restarting server fails to bind same port)
 
 ### Third stage
 
-- Client has nickname and username
-- Client needs password for authenticate
-- Client can be regular user or operator (admin)
+- [ ] Client has nickname and username
+- [ ] Implement generic parser (extract command and pass args to command function)
+- [ ] Dispatcher (select function for each command)
+- [ ] PASS command for authenticate
 
 ### Fourth stage
 
-- Client can create/connect to channels
-- Client can send message inside channel (only people inside this channel can read)
+-  [ ]Client can create/connect to channels
+- [ ] JOIN command (user can create channel)
+- [ ] PRIVMSG command (send message to a channel)
 
 *It will continue...*