If you need to access the resource in office but working from home, you can consider using VPN. VPN can help you access your office network remotely and safely.
But your office should has a router supporting VPN, then you can use your PC, Phone or other clients to establish a VPN tunnel with the router. Then the clients can access the resource in office. If your office is using TP-link VPN router, you can refer to the following FAQ to establish the VPN tunnel.
For IPsec VPN
|How to configure GreenBow IPsec VPN Client with a TP-Link VPN Router using the new GUI?||https://www.tp-link.com/en/faq-2162.html|
|How to configure Shrew Soft VPN Client with a TP-Link VPN Router using the new GUI?||https://www.tp-link.com/en/faq-2161.html|
For L2TP/PPTP VPN
|How to establish PPTP Server by SMB VPN Router using the new GUI?||https://www.tp-link.com/en/faq-2159.html|
|How to establish L2TP Server by SMB VPN Router using the new GUI?||https://www.tp-link.com/en/faq-2158.html|
If you are using L2TP over IPsec VPN on Windows PC, you may meet the following problem.
|Why my Windows 7 PC cannot connect to TP-Link L2TP VPN server?||https://www.tp-link.com/en/faq-1029.html|
You still can use virtual server (port forwarding) to make your clients be able to access the server in your office. But VPN should be more secure.