What does it means?

[teccart]

Hello everyone.

Can you please explicate me what is it.

In config-firewall-policy-edit:

fixedport - Enable to prevent source NAT from changing a session's source port.

If I understand correctly dport means destination port but explication says source port???

Is it right?

Thank you.

[AEK]

Hi

Yes that's right, it means the source port is preserved when doing NAT.

fixedport = fixed port.

[Toshi_Esumi · Accepted solution]

I think you just misread the concatenated word "fixedport". It's not "fixe-dport" but it's "fixed-port".
The more explanation is in this KB.

https://community.fortinet.com/t5/FortiGate/Technical-Tip-Using-Fixedport-or-Preserve-Source-Port-on...

Toshi

[teccart]

Ok. It's my mistake. Sorry.