Hi@akhtar,
You can change port no of httpd webserver. For that you have to set it in httpd.conf file. Follow the below given steps.
- 
Open /etc/httpd/conf/httpd.conf file. 
- 
Search Listen 80 and replace it with Listen 82 
- 
Close the file and run the below command. 
$ semanage port -a -t http_port_t -p tcp 82