Server Logging Question

Hi. I got some technical question about ubuntu server.

I wonder where will log my ip address

So far i found that

/var/log/apache2 on access and error log
/var/log/secure
btmp

Is there any other files in server that log ip address of whoever access the server, be it ssh, sftp or web or any other.

Thanks

That contains a lot more than just plain logins, but logins are in there too. It's protected so you'll need to be root to read it:

You can also run commands like
and