Limited IP address problem

[sinky]

Hi guys,

I am a linux newby and have kinda been thrown in at the deepend.

I can connect to our redhat linux server using SSH and SFTP however upon setting up and FTP account for a client they cannot connect.

How can I allow their IP address access?

Thanks

Sinky

[Irithori]

ssh and sftp are independent of ftp
Can you connect via ftp?


The "Allow their IP" cannot be answered without knowing the setup.

- has the ftp server a public IP?
- is there a firewall?
- what ftp server is it? vsftpd, proftpd,..?
- does the ftp server config restrict by IP?

[sinky]

I cannot connect via FTP - only SFTP.

I use vsftpd for the SFTP I think - is there anyway to find out for sure?

The server does have a public IP.

I assume that there is a firewall as from outside the office I cannot connet to it (its an externally hosted server).

I hope this helps

Thanks

Sinky

[kesriniv]

well., if Firewall is there., i might be stopping the traffic to FTP Port. Other than that if FTP server is pingable ., I dont see any speed breakers in between.

[klhudson]

SFTP is provided by your SSH Server. I comes in on port 22, if you can sftp and ssh, then this port is open on your firewall. FWIW, this would be the prefered and recommened method to use for ftp.

If you are intent on exposing your valuable login credentials and sensitive data to everone on the internet with netcat or equivalent, then you need to open ports 20 and 21 on your firewall.

The vsftp server is not your *Secure* ftp server, it is your *regular* ftp server. It is more secure than most others at the system level. However, don't expect it to protect your login credentials or data in transit. It listens, by default on the standard ports 20 and 21.

[klhudson]

I should have added, if your client is using windows, then recommend them to install PuTTY. That will provide an ssh and sftp client for them. Then they can ftp using sftp and advoid exposing login credentials and data in plain text over the internet.