> Source: [sk127792](https://support.checkpoint.com/results/sk/sk127792)

# sk127792 - "ERR_CONNECTION_REFUSED" or "ERR_CONNECTION_RESET" error in browser when trying to access WebUI

| Property | Value |
|----------|-------|
| Solution ID | sk127792 |
| Date Created | 2018-06-18 |
| Last Modified | 2023-07-08 |
| Technical Level | Advanced |
| Products | Security Gateway, Security Management Server |
| Versions | R81.20, R81.10 (EOS), R81.20, R81 (EOS), R81.10 (EOS), R81 (EOS) |
| OS | Gaia |

## Symptoms

- * "ERR_CONNECTION_REFUSED" or "ERR_CONNECTION_RESET" error in browser when trying to access WebUI, when Security Gateway/Management is configured to listen on port 443 for WebUI access

* No relevant port 443 drops are seen in SmartLog.

* Tcpdump capture shows reset for every SYN packet as can be seen below:  


  `
  [Expert@HostName:0]# tcpdump -ni Mgmt port 443`  
  `
  tcpdump: verbose output suppressed, use -v or -vv for full protocol decode`  
  `
  listening on Mgmt, link-type EN10MB (Ethernet), capture size 96 bytes`

  `
  17:12:45.648517 IP x.x.20.9.61821 > x.x.0.12.443: S 2964051352:2964051352(0) win 64240`  
  `
  17:12:45.648770 IP x.x.0.12.443 > x.x.20.9.61821: R 0:0(0) ack 2964051353 win 0`  
  `
  17:12:45.648873 IP x.x.20.9.61822 > x.x.0.12.443: S 609305424:609305424(0) win 64240`  
  `
  17:12:45.649124 IP x.x.0.12.4434 > x.x.20.9.61822: R 0:0(0) ack 609305425 win 0
  `

  <br />

* `'ps auxw | egrep "PID|httpd2" | grep -v grep'` shows that web server (httpd2) is not running (empty response)

* Manually starting the web server process (httpd2) gives the error messages below:  


  `
  [Expert@HostName:0]# /opt/CPshrd-R80/web/Apache/2.2.0/bin/httpd2 -k start -f /web/conf/httpd2.conf -D FOREGROUND`  
  `
  [DATE TIME] [so:warn] [pid 1632] AH01574: module setenvif_module is already loaded, skipping`  
  `
  [DATE TIME] [so:warn] [pid 1632] AH01574: module headers_module is already loaded, skipping`  
  `
  AH00526: Syntax error on line 74 of /web/conf/extra/httpd-ssl.conf:`  
  `
  Invalid Mutex directory in argument file:/usr/local/apache2/logs/ssl_mutex
  `

* Error when trying to load a new tab in Logs \& Monitor, api status showing that apache is down/  

* Manually starting the web server process (httpd2) gives the error messages below:  
  `[Expert@HostName:0]# /opt/CPshrd-R80/web/Apache/2.2.0/bin/httpd2 -k start -f /web/conf/httpd2.conf -D FOREGROUND`  
  `[DATE TIME] [mpm_prefork:notice] [pid 17804] AH00173: SIGHUP received. Attempting to restart`  
  `[DATE TIME] [so:warn] [pid 17804] AH01574: module setenvif_module is already loaded, skipping`  
  `[DATE TIME] [so:warn] [pid 17804] AH01574: module headers_module is already loaded, skipping`  
  `[DATE TIME] [so:warn] [pid 17804] AH01574: module proxy_module is already loaded, skipping`  
  `[DATE TIME] [so:warn] [pid 17804] AH01574: module proxy_http_module is already loaded, skipping`  
  `[DATE TIME] [so:warn] [pid 17804] AH01574: module proxy_module is already loaded, skipping`  
  `[DATE TIME] [so:warn] [pid 17804] AH01574: module proxy_http_module is already loaded, skipping`  
  `AH00526: `**Syntax error on line 99 of /web/conf/extra/httpd-ssl.conf:**  
  **SSLProtocol: Illegal protocol ''**

  <br />

## Cause

Missing/empty file or directory.

## Solution

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---

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