Under my Firewall settings, under File Sharing (SMB) I see ARDAgent is set to allow incoming connections, as well as com.adguard,Adguard and Dropbox, and Skype. I may have enabled these to allow incoming connections, though I do not remember doing so. I am not even sure what ARDAgent is for? Apple Remote Desktop? I do not use it on my MBP so I am not sure why it is installed? Is this something to be concerned with? Thanks.