Synology LAN & Remote Access Configuration Guide

How to Configure Local and Remote Access on Synology NAS

Reliable access to your NAS, both on your local network and from outside your office or home, is essential for productivity, backups, and collaboration. A properly configured Synology NAS lets users work seamlessly on the LAN while enabling secure remote access when traveling or working offsite.

This step-by-step guide explains how to configure LAN and remote access on a Synology NAS, avoid common mistakes, and keep your system secure.

Why LAN and Remote Access Configuration Matters

Without a correct network configuration:

Users may experience slow or unreliable access.
Remote connections can fail or expose security risks.
Backups and sync tasks may not run correctly.

A structured setup ensures consistent performance and controlled access regardless of location.

Step 1: Verify Local Network (LAN) Connectivity

Before enabling remote access, confirm your NAS works correctly on the local network.

Connect the NAS to your router or switch using Ethernet.
Log in to DSM using the local IP address.
Open Control Panel → Network → Network Interface
Confirm the NAS has a valid IP address

Best Practice

Assign a static IP address or a DHCP reservation so the NAS IP does not change, which prevents access issues later.

Step 2: Configure Network Settings in DSM

Within DSM:

Set the correct gateway and DNS servers.
Verify MTU settings (usually the default is best)
Enable HTTPS for secure local connections.

These settings ensure stable communication within the LAN and prepare the NAS for external access.

Step 3: Enable Secure Remote Access Options

Synology offers multiple methods for remote access. Choose based on security needs and technical comfort.

Option 1: QuickConnect

Easiest setup
No manual router configuration
Ideal for light remote access

Option 2: DDNS with Port Forwarding

More control and better performance
Requires router configuration
Suitable for business environments

Option 3: VPN Access

Most secure option
NAS accessed as if on the local network
Recommended for sensitive data

Step 4: Configure DDNS and Port Forwarding

If using DDNS:

Go to Control Panel → External Access → DDNS.
Add a DDNS provider or custom domain.
Test the connection

On your router:

Forward required ports (HTTPS, VPN, or custom services)
Avoid exposing unnecessary ports.

Security Tip

Always use HTTPS and change default ports where possible.

Step 5: Set Firewall and Account Security

Strong access controls reduce risk:

Enable the built-in DSM firewall.
Allow access only from trusted regions or IPs
Use strong passwords and 2FA.
Disable default admin accounts

These steps dramatically reduce unauthorized access attempts.

Step 6: Test Local and Remote Access

After configuration:

Test access from another device on the LAN
Test remote access using mobile data or an external network.
Verify file transfers, applications, and backup jobs

Testing ensures reliability before relying on the setup for daily operations.

Synology’s Network Access Approach

Synology designs DSM to support multiple access models without complex reconfiguration. From QuickConnect for simplicity to VPN-based access for enterprises, Synology NAS platforms allow administrators to balance convenience and security. Integrated firewall rules, encrypted connections, and access logs help maintain visibility and control across both LAN and remote sessions.

Common Configuration Mistakes to Avoid

Using dynamic IPs on the NAS
Exposing services without encryption
Forwarding too many ports
Ignoring firewall and access logs
Skipping remote access testing

Avoiding these pitfalls keeps performance high and risk low.

How Epis Technology Supports Secure NAS Access

Epis Technology helps organizations design and deploy secure Synology NAS access models tailored to their environment. The team configures LAN networking, remote access, VPNs, firewalls, and authentication policies to ensure reliability and security. Epis Technology also audits existing setups, resolves connectivity issues, and optimizes performance for distributed teams and hybrid work environments.

Proper LAN and remote access configuration is critical for getting the most from a Synology NAS. By following a structured setup starting with local networking, adding secure remote access, and enforcing strong security controls, you can ensure reliable access without unnecessary risk.

With Synology’s flexible access options and expert deployment from Epis Technology, your NAS can remain both accessible and secure wherever your work takes you.

About Epis Technology

Epis Technology provides enterprise IT infrastructure, data protection, and Synology consulting services. The company specializes in NAS deployments, hybrid cloud integration, Microsoft 365 and Google Workspace backups, fully managed PC backups, and business continuity planning. Epis Technology helps organizations build secure, scalable systems that keep data accessible and protected.