FTP connection was reset by peer

[saslove]

FILENAME ftp1 FTP '' LS HOST='ftp01.ftp.mdsol.com'
cd='/org.mdsol.com/sasondemand' user='type username'
pass='{password' debug AUTHTLS PASSIVE;
data listing;
infile ftp1 DLM=' ' ;
input ;
File_Name = _infile_;
run;

Can you let me know why this is getting reset by peer? How to fix this ? 
The error is "Connection was reset by peer"

What is the issue with my code?

[SASKiwi]

This isn't necessarily a coding issue. If you Google your error you will see this:

Can you use FTP successfully from a command line using the FTP command?

Are you using a SAS server or not? If you are then the most likely cause is a firewall rule blocking your connection. You will need to talk to your IT support to confirm this.

Your FILENAME statement also includes a double quote which shouldn't be there: