When using the Java applet, the local printers are available in the Citrix client. However, under some circumstances it might be necessary to change the Universal Printer Driver to PCL mode.
Excerpted from SonicWALL SSL-VPN 200 / 2000 / 4000 FAQ
SonicWALL SRA Series
Virtual Appliance, 4600, 4200, 1600, 1200
Created on: 11/27/2007
Last Update on: 12/10/2014