NAT Stops After Sometime

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IT_BAN
IT_BAN Posts: 1 image  Freshman Member
We are using Zyxel USG310 and NAT is configured on Dyndns.
After 10 to 15 days the NAT or port forwarding stops automatically. To resolve we have to restart the firewall.
The firmware of the firewall is latest 
4.72(AAPJ.0). 

Please assist.

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