Why is SEP12rU4Mp1 using proxy to connect to GUP??

Hi all,

Having a problem where the SEP12RU4MP1 client is connecting to the GUP on port 2967 but proxy logs shown by the network admin is having
the client using the proxy to connect to the GUP. Is the cleint not supposed to connect directly to the GUP whether the machine has proxy settings or not?

Why is this happening?

Any help will be appreciated.

Thanks