Disable Internet access to a user and enable remote access to the machine for the use

[santhoshsd]

Hello,
I have a system in which I have installed NXServer.
I want the a user to access the system remotely, but the user should not be able to access/browse in the system.

I tried with
httpd: user@localhost.com in /etc/hosts.deny
and
sshd: user@localhost.com in /etc/hosts.allow

but it did not work.

Then I tried with
sudo iptables -A INPUT -p tcp --dport ssh -j ACCEPT
sudo iptables -A OUTPUT -p tcp -m owner –uid-owner tuser01 -j DROP

which disables the internet for the user but disables the remote login ? I want the user tuser01 to have remote access to the machine