Cant change portal settings

i have installed univention suitecrm through vmware image and it works fine, but through dhcp it gives me access only for univention potal.i am working on local internal ips, and if user hit the ip address they see univention main portal.
i want to change the suitecrm postal ip, so that if they access internal ip like 192.168.x.240… they directly see suitecrm login page, and dont see univention main page. can someone help pease

thank you

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