I was assuming that your where RTFMing from the manual "reading the fine manual"
This is why I was mentioning the port 873 as this is clearly mentioned in the manual as I stated SEE top page of 107 in 3rd note
down from the top explaining what to do w/ WAN replication. In the future let me know that you did not read the manual about a certain function that you are inquiring about, I am Cisco certified as well and those tests days are long over but reading the manual was critical when learning the functions.
Adding another note: The forum is community based so forum moderators are assisting outside of their normal work hours so it is out of our free interest to help and assist.