Port Translation very slow

FarzanaMustafa — Wed, 20 Feb 2019 02:23:11 GMT

Hello,

We setup a inbound NAT to direct port 443 to a server on-site on 10.x.x.x and it all worked fine and fast - then it turned out we needed to adjust it to port 4443 as the customer was using port 443 for inbound client VPN connections of course.

Anyway, after I adjusted the NAT inbound for this one rule (a simple change of 443 to 4443) - the whole access method slowed down using port 4443 to the point where it is unusable / not responding.

We thought this might be because port 4443, so I tested with 2100 - same result - but the same rule with 443 redirected is fine and fast -

Can someone please advise why this is going so slow when not using the port 443 as the standard inbound NAT to this web server?

Re: Port Translation very slow

reaper — Wed, 20 Feb 2019 14:10:41 GMT

from a NAT perspective, this should not matter

have you been able to run packetcapturesin front and behind the firewall to see where delays are introduced?

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Port Translation very slow

Re: Port Translation very slow