No URL field in the Search base

[vistasyslog]

I have three Firewalls splunking, and I cannot see a src_ip or the URL fields in the search base.
Is there a way to get them.
I just started with Splunk so may be Don't have a lot of things required setup right now.
Any help or tips on starting Splunking that may be helpful in the future would be great.

Thanks all
Ansh

[cyue_splunk]

Click he small triangle symbol at the beginning of any event and use the Interactive Field Extract page to extract/define your src_ip or URL fields.

[vistasyslog]

Great. Thanks for your help.

[cyue_splunk]

Here is the example how you can use IFX to extract fields:

http://docs.splunk.com/Documentation/Splunk/5.0.1/Knowledge/ExtractfieldsinteractivelywithIFX

[vistasyslog]

Thanks for the answer, but I still cannot find the fields.
Is there a syntax that I need to put in ?
Can you give me an example of it ?

Thanks