--- lbbs/src/net_server.c	2025/11/21 10:34:10	1.96
+++ lbbs/src/net_server.c	2025/12/01 14:01:36	1.99
@@ -422,6 +422,8 @@ static int fork_server(void)
 			log_error("Error setting SSH options: %s\n", ssh_get_error(SSH_session));
 			goto cleanup;
 		}
+
+		ssh_set_blocking(SSH_session, 0);
 	}
 
 	// Redirect Input
@@ -523,6 +525,7 @@ int net_server(const char *hostaddr, in_
 	time_t tm_notify_child_exit = time(NULL);
 	int i, j;
 	pid_t pid;
+	int ssh_key_valid = 0;
 	int ssh_log_level = SSH_LOG_NOLOG;
 
 #ifdef HAVE_SYSTEMD_SD_DAEMON_H
@@ -533,10 +536,41 @@ int net_server(const char *hostaddr, in_
 
 	sshbind = ssh_bind_new();
 
+	if (ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_HOSTKEY, SSH_HOST_RSA_KEY_FILE) < 0)
+	{
+		log_error("Error loading SSH RSA key: %s\n", SSH_HOST_RSA_KEY_FILE);
+	}
+	else
+	{
+		ssh_key_valid = 1;
+	}
+	if (ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_HOSTKEY, SSH_HOST_ED25519_KEY_FILE) < 0)
+	{
+		log_error("Error loading SSH ED25519 key: %s\n", SSH_HOST_ED25519_KEY_FILE);
+	}
+	else
+	{
+		ssh_key_valid = 1;
+	}
+	if (ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_HOSTKEY, SSH_HOST_ECDSA_KEY_FILE) < 0)
+	{
+		log_error("Error loading SSH ECDSA key: %s\n", SSH_HOST_ECDSA_KEY_FILE);
+	}
+	else
+	{
+		ssh_key_valid = 1;
+	}
+
+	if (!ssh_key_valid)
+	{
+		log_error("Error: no valid SSH host key\n");
+		ssh_bind_free(sshbind);
+		return -1;
+	}
+
 	if (ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_BINDADDR, hostaddr) < 0 ||
 		ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_BINDPORT, &port) < 0 ||
-		ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_HOSTKEY, SSH_HOST_KEYFILE) < 0 ||
-		ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_HOSTKEY_ALGORITHMS, "ssh-rsa,rsa-sha2-512,rsa-sha2-256") < 0 ||
+		ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_HOSTKEY_ALGORITHMS, "+ssh-rsa") < 0 ||
 		ssh_bind_options_set(sshbind, SSH_BIND_OPTIONS_LOG_VERBOSITY, &ssh_log_level) < 0)
 	{
 		log_error("Error setting SSH bind options: %s\n", ssh_get_error(sshbind));
@@ -614,6 +648,8 @@ int net_server(const char *hostaddr, in_
 		fcntl(socket_server[i], F_SETFL, flags_server[i] | O_NONBLOCK);
 	}
 
+	ssh_bind_set_blocking(sshbind, 0);
+
 	hash_dict_pid_sockaddr = hash_dict_create(MAX_CLIENT_LIMIT);
 	if (hash_dict_pid_sockaddr == NULL)
 	{