FileZilla: connect at work?

hello. i am new to putting apps on my flash drive. i can get firefox to work while i am at work. but i can not connect to ftp with filzilla. i think work may be blocing ftp connections. is there any way around this. i found a program called anitfirwall but i thin k it has to be installed on the computer, which i can't do at work. any help would be great.

thanks