way to transfer file

I have utuntu server which is running on VMware , however , the vmware is restricted by firewall rule , now only 80/443 , ssh is allowed between this server and internal network .

Now I want to transfer a file to this server , my situation can not directly transfer it via internal network as the above restriction .

I just would like to ask is there any method can transfer the file , for example , through the port 80/443 , download it from a public site something like cloud , free storage website , I am wonder github can do that or not ?

would anyone can please suggest the method .

Many thanks