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Article Applies To:

Gen5: NSA E7500, NSA E6500, NSA E5500, NSA 5000, NSA 4500, NSA 3500, NSA 2400, NSA 240
Gen5 TZ Series: TZ 100, TZ 100 Wireless, TZ 200, TZ 200 W, TZ 210, TZ 210 Wireless,
Gen4: PRO series: PRO 5060, PRO 4100, PRO 4060,PRO 3060, PRO 2040, PRO 1260
Gen4: TZ series: TZ 190, TZ 190 W, TZ 180, TZ 180 W, TZ 170, TZ 170 W, TZ 170 SP, TZ 170 SP Wireless, TZ 150, TZ 150 W, TZ 150 Wireless (RevB)
Firmware/Software Version: SonicOS Enhanced firmware (3.5 and above) and SonicOS Standard firmware (3.0 and above)
Services: Port Forwarding

Description:

This tech note provides information on how to configure your SonicWALL firewall for port forwarding of FTP, SMTP and DNS. Port forwarding is used when you have internal servers that need to be accessible by the public and you have limited public IP addresses. Therefore, a one-to-one NAT is not possible or not desired.

In this scenario, only one public IP address is given and it is assigned to the SonicWALL WAN interface. However, we have three servers, one running FTP, one running SMTP and one running DNS that needs to be accessible by the public.


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