I am now setting up one Zywall USG 100 (latest firware applied), and I want to forward port 21 to internal server. I follow the steps from the manual, but it is not working. If I disable the firewall, it is working.
I am attaching the manual/tutorial. I used the steps from page 167 to 170. I cannot copy it here as it document is secured. ZYWALL-USG-200-2.20.pdf
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