I am dealing with the concept called TCP wrapper, I have also studied the man page for hosts_access and I came to know regarding the daemon list and the client list as such with some other options as well.
But when I start configuring it in hosts.allow and hosts.deny using the access control Language, it's worked fine in hosts.deny but the language written in hosts.allow is not working properly.
I am able to deny certain services when I put it in deny, but it's not working properly in hosts.allow.
Is there any services that I have to restart after configuring the hosts files. One of example what I did was
ALL EXCEPT vsftpd : ALL \ : twist /bin/echo " you can get access" .
I put this line in hosts.allow and commented (#) all lines in hosts.deny (just to check weather the hosts.allow is responding) but it didn't work, I was able to establishes ftp connection yet.
So what am I suppose to do now? And also provide example guide or link which can help me learn more