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Jexus Series: IP and Domain Restrictions

Jexus does not yet support dynamic IP restriction as IIS 7+ do, but its IP address restriction support is feature complete.

For more information on Jexus/IIS comparison you can go to https://github.com/jexuswebserver/jexus-contrib/blob/master/comparison.en.md

To configure IIS IP and Domain Restrictions, you need to follow this article.

It is very easy to translate the steps to Jexus.

Scenario 1

When we specify <ipSecurity allowUnlisted="true" /> on IIS and add deny entries

  • 192.168.100.1
  • 169.254.0.0 with subnet mask 255.255.0.0

Then in Jexus configuration we should use

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denyfrom=192.168.100.1,169.254.0.0/16

Note that Jexus supports several ways of IP range, such as

  1. 169.254.0.0–169.254.255.255 (IP start to end)
  2. 169.254.0.0/16 (with prefix size)
  3. 169.254.. (with wildcard)

Scenario 2

When we specify <ipSecurity allowUnlisted="false" /> on IIS and add allow entries

  • 192.168.100.1
  • 169.254.0.0 with subnet mask 255.255.0.0

Then in Jexus configuration we should use

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allowfrom=192.168.100.1,169.254.0.0/16

Scenario 3

If in Jexus settings we have

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allowfrom=192.168.100.1,169.254.0.0/16
denyfrom=192.168.100.1

Then the effective IP range becomes 169.254.0.0/16 only.

© Lex Li. All rights reserved. The code included is licensed under CC BY 4.0 unless otherwise noted.
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Last updated on April 13, 2024