> Source: [sk172384](https://support.checkpoint.com/results/sk/sk172384)

# sk172384 - Port Scanning shows Port 12873 is open on the Security Gateway

| Property | Value |
|----------|-------|
| Solution ID | sk172384 |
| Date Created | 2021-03-07 |
| Last Modified | 2022-08-22 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R81.10 (EOS), R81 (EOS) |
| OS | Gaia |

## Symptoms

- * A port scan reveals that port 12873 is open. The user needs to disable listening by the firewall on port 12873 for a PCI audit.
* `netstat` shows that the firewall is listening on port 12873:  

  ```
  [Expert@hostname:0]# netstat -anp | grep :12873
  
  tcp        0      0 0.0.0.0:12873               0.0.0.0:*                   LISTEN      8732/ci_http_server
  ```

## Cause

The `ci_http_server` (CIHS) process is enabled, by default, on all firewalls and is allowed by the implied rules.  

For more information, see the following links:  

* [sk97638: Check Point Processes and Daemons](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk97638 "sk97638: Check Point Processes and Daemons")
* [sk52421: Ports used by Check Point software](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk52421 "sk52421: Ports used by Check Point software")
* [sk110218: How to enable logging of informative implied rules on R80.10 Security Gateway](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk110218 "sk110218: How to enable logging of informative implied rules on R80.10 Security Gateway")

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## Solution

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