Allow only FTP or SFTP

[torturedmind]

hello linux masters. am a noob in linux so please bear with me.

i have a particular windows 98se machine connected to a linux server that needs to have access to FTP only. i understand that i just need to allow port 21 of that box and block the rest of the ports to get through the proxy. problem is i haven't got the slightest idea what to do or where to dig up. would anyone care to please show me how to do this (in details if possible)? am really a beginner when it comes to linux server management so i hope you'll understand my side.

any idea will be highly appreciated. peace!

kilroy
philippines

"Once a king, always a king. But being a knight is more than enough."

 

[QatQat]

you need to start using iptables.

A good place to start is

http://www.netfilter.org

A easier tuttorial on how to use iptables is at

http://www.linuxhomenetworking.com/linux-hn/iptables-intro.htm

This will guide you through initial steps and show you how to achieve your objective.


Cheers

QatQat

Life is what happens when you are making other plans.

 

[zeland]

1. FTP requires 2 ports for communication.
20 - Data Port. Uploads/Downloads happen on this port.
21 - Command Port. FTP commands are sent through this port.

2. How does your Win98se, FTP server & proxy connect to each other?


--== Anything can go wrong. It's just a matter of how far wrong it will go till people think its right. ==--