I like to use web-min some time on Linux and Unix to make easy to use my work .
This download link will change sometime so kindly refer here and select Solaris package format and follow the steps to complete the install
if necessary, switch to the root user with: su root
On Solaris 11, it has been reported that the root user be switched from a role account to a normal account in order for logins to work.
The command for this is:
rolemod -K type=normal root
Then run the following commands to uncompress and install it:
pkgadd -d webmin-1.580.pkg WSwebmin