How to change field alias of 'Host' field to 'Server'?

[splunker12er]

I need a new field in the name 'Server' from the 'host' field.

[strive]

In your props.conf

[Your Sourcetype]    
FIELDALIAS-Server = host AS Server

[strive]

You can use wildcards. If you want to apply for everything then you can use [default]
[default]
FIELDALIAS-Server = host AS Server

[strive]

Then you need global settings.

Use the [default] stanza to define any global settings.
You can also define global settings outside of any stanza, at the top of the file.

for more details on GLOBAL SETTINGS see the props.conf http://docs.splunk.com/Documentation/Splunk/6.1.2/admin/Propsconf

[splunker12er]

I do need this generic for all sourcetype. Can i use wildcards in stanza name ?