LAN to WAN slow NAT speed for port 80

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PeterUK
PeterUK Posts: 2,730  Guru Member
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edited April 2021 in Security

VPN2S with V1.20(ABLN.1)

So I'm testing this until out and found for port 80 without Content filter enabled is slow

setup I put this between two PC's for LAN testing

on the VPN2S

WAN IP set to 192.168.255.55/255.255.255.192

LAN IP 192.168.1.1/255.255.255.0

PC1 connected to WAN on VPN2S IP 192.168.255.53/255.255.255.192

PC2 connected to LAN on VPN2S IP 192.168.1.2/255.255.255.0 gateway 192.168.1.1

I first tested a file transfer by MS file share and got 950Mb! Which is good

I then setup a Abyss web server on PC1 with port 80 and PC2 downloading got around 500Mb?

I then setup the Abyss web server on PC1 with port 8080 and PC2 downloading got 950Mb?

I then setup the Abyss web server on PC1 with port 443 and PC2 downloading got 950Mb?

So why is port 80 so slow?

All Replies

  • Zyxel_Emily
    Zyxel_Emily Posts: 1,296  Zyxel Employee
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    Here is the download speed when using port 80.
    The firmware version on VPN2S is 1.20(ABLN.1)_00200812H1.
    We're checking why the download speed when using port 80 is around 500Mbps only,

    Port 80
    517.6 Mbps


  • Zyxel_Emily
    Zyxel_Emily Posts: 1,296  Zyxel Employee
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    We also get the same throughput as you when using port 80.
    We'll investigate and evaluate to see if there’s any room to be improved the throughput in the future.
    Thank you for the feedback.

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