1) Goto Tomcat Home directory/conf/open tomcat-user.xml file

2) and change the username and password under manager role to whatever u want like below…

<user username=”chaitanya” password=”chaitanya” roles=”admin,manager”/>

3) if u want to seperate users for admin and manager then use two user elements like

 <user username=”admin” password=”admin” roles=”admin”/>

<user username=”cnya” password=”cnya” roles=”manager”/>

save the file and restart the tomcat.

1) go to Tomcat Home directory/conf/ open “server.xml” file.
2) look for <Service name=”Catalina”>
3) change the value of port attribute of Connector element to what ever value u want.
<Connector port=”8088″ …………….>
4) restart the tomcat
5) go to browser and use the new port number.
  http://localhost:8088/