@infrapeya The quickest way is via the linux command prompt on the master FOG server.
If you are using a rhel based linux distribution then.
scp /var/www/html/fog/service/ipxe/bzImage* root@SN_IP:/var/www/html/fog/service/ipxe
i.e. scp /var/www/html/fog/service/ipxe/bzImage* root@192.168.20.40:/var/www/html/fog/service/ipxe
The debian/ubuntu versions are a bit more difficult.
Remote connect to the storage node using ssh (or putty from windows)
On the linux command prompt key in the following.
sudo su - scp <linux_user_on_master_fog>@<master_fog_ip>:/var/www/html/fog/service/ipxe/bzImage* /var/www/html/fog/service/ipxei.e. scp daffy@192.168.11.53:/var/www/html/fog/service/ipxe/bzImage* /var/www/html/fog/service/ipxe