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    <title>topic Error Adding a Blocking Device (PIX) in Network Security</title>
    <link>https://community.cisco.com/t5/network-security/error-adding-a-blocking-device-pix/m-p/161041#M615646</link>
    <description>&lt;P&gt;hi!&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Thanks for the quick response.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Now, I get the following error when I try to add a blocking device to my IDS sensor:&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Error: errNotFound Net device references a shun device config record that does not exist. Attempted configuration update was rejected. [0,3]&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Any idea why this error is generated?&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;The sensor knows the firewall's IP, the username, the enable password, and the remote access password. SSH is enabled on the firewall. I tried adding the firewall as a trusted host, but I get the error: &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Error: socket connect failed [4,111]&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Any help would be appreciated. Thanks!&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Bercy&lt;/P&gt;</description>
    <pubDate>Fri, 21 Feb 2020 06:51:36 GMT</pubDate>
    <dc:creator>admin_2</dc:creator>
    <dc:date>2020-02-21T06:51:36Z</dc:date>
    <item>
      <title>Error Adding a Blocking Device (PIX)</title>
      <link>https://community.cisco.com/t5/network-security/error-adding-a-blocking-device-pix/m-p/161041#M615646</link>
      <description>&lt;P&gt;hi!&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Thanks for the quick response.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Now, I get the following error when I try to add a blocking device to my IDS sensor:&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Error: errNotFound Net device references a shun device config record that does not exist. Attempted configuration update was rejected. [0,3]&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Any idea why this error is generated?&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;The sensor knows the firewall's IP, the username, the enable password, and the remote access password. SSH is enabled on the firewall. I tried adding the firewall as a trusted host, but I get the error: &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Error: socket connect failed [4,111]&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Any help would be appreciated. Thanks!&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Bercy&lt;/P&gt;</description>
      <pubDate>Fri, 21 Feb 2020 06:51:36 GMT</pubDate>
      <guid>https://community.cisco.com/t5/network-security/error-adding-a-blocking-device-pix/m-p/161041#M615646</guid>
      <dc:creator>admin_2</dc:creator>
      <dc:date>2020-02-21T06:51:36Z</dc:date>
    </item>
    <item>
      <title>Re: Error Adding a Blocking Device (PIX)</title>
      <link>https://community.cisco.com/t5/network-security/error-adding-a-blocking-device-pix/m-p/161042#M615647</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;I assume this is a version 4.0 or 4.1 sensor??&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;If so then the first error  "Error: errNotFound Net device references a shun device config record that does not exist. Attempted configuration update was rejected. [0,3]" is fairly easy to explain.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;The username and password information is configured as a "shun device configuration" that you give your own made up name to. &lt;/P&gt;&lt;P&gt;Then when you add in the Pix as a device to be managed you will specifically reference your previously created "shun device configuration" (the name you made up).&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Not quite sure what the second error is.&lt;/P&gt;&lt;P&gt;I assume you are running the command:&lt;/P&gt;&lt;P&gt;configure terminal&lt;/P&gt;&lt;P&gt;  ssh host-key 10.1.1.1  &lt;/P&gt;&lt;P&gt;  (replacing 10.1.1.1 with your pix address)  &lt;/P&gt;&lt;P&gt;It will establish an ssh connection to your pix and&lt;/P&gt;&lt;P&gt;display the server key.  You will need to accept the key if it is correct.&lt;/P&gt;&lt;P&gt;If you don't accept the key then NAC will not be able to connect to the Pix using SSH.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;NOTE: The Pix may also need to be configured to accept ssh connections from the sensor.&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Wed, 16 Jul 2003 21:55:13 GMT</pubDate>
      <guid>https://community.cisco.com/t5/network-security/error-adding-a-blocking-device-pix/m-p/161042#M615647</guid>
      <dc:creator>marcabal</dc:creator>
      <dc:date>2003-07-16T21:55:13Z</dc:date>
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