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temu
New Contributor

NAT PORT EXHAUSTED

NAT port exhausted for a particular internal ip and network disconnected frequently.

4 REPLIES 4
AEK
Honored Contributor II

There to much sessions using NAT.

Try use a NAT pool with a wider NAT IP range.

AEK
AEK
temu
New Contributor

Thanks for the information

Rajneesh
Staff
Staff

Hello @temu 

It simply means that the NAT port is exhausted so this log is expected.

NAT port exhaustion is also highlighted by a raise of the 'clash' counter from the 'diag sys session stat' command.

You can refer this KB article :
https://community.fortinet.com/t5/FortiGate/Technical-Tip-How-to-determine-whether-a-NAT-port-is-exh...

temu
New Contributor

Thanks a lot

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