> Source: [sk106447](https://support.checkpoint.com/results/sk/sk106447)

# sk106447 - Misconfiguration of "Management" interface on Check Point Security Gateway causes outage

| Property | Value |
|----------|-------|
| Solution ID | sk106447 |
| Date Created | 2015-06-14 |
| Last Modified | 2019-12-09 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |
| OS | Gaia |

## Symptoms

- * When "Management" interface on Security Gateway does not have IP address, Check Point products are not loaded after reboot.  

* It is not possible to connect to Security Gateway over SSH via other interfaces - only over console.  

* "`fw stat`" command shows that "defaultfilter" policy is loaded.  

* "`cpwd_admin list`" command returns:  
  "`No processes in WD database`"  

* Debug of "`cpstart`" (per [sk92987](http://supportcontent.checkpoint.com/solutions?id=sk92987)) shows that the '`CheckIP`' test failed:  
  "`cpstart: CheckIP failed, program terminate`"  

* Running "`cpconfig`" command shows:

  `cpinst Error: Host name resolution for `*HOSTNAME*` failed.`  
  `Local host name resolution is required for normal Check Point Security Gateway operation.`  
  `Please correct this error and run cpstart again:`  
  `Add an entry for `*HOSTNAME*` in /etc/hosts`  

* "`cat /etc/hosts`" command shows only the entry for IP address "127.0.0.1"  

* Last change on the machine before reboot was done on "Management" interface - *one* of the following was done:  
  * IP address was removed from the current "Management" interface
  * "Management" interface was shut down
  * Another interface was defined as "Management" interface

## Cause

If the */etc/hosts* file does not contain an entry with machine's HostName and the IP address that was assigned to "Management" interface, then Check Point software will not load.

* On Open Server: IP address entered during First Time Configuration Wizard is assigned to first interface. This interface is considered as "Management" interface on Gaia OS, and its IP address is added to */etc/hosts* file.
* On Check Point appliance: Interface marked as "*Mgmt* " (to which administrator connects to run First Time Configuration Wizard) is considered as "Management" interface on Gaia OS, and its IP address is added to */etc/hosts* file.

## Solution

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