-   -   TCP UDP Both        00 01 02 03 04 05 06 07 08 09 10 11 : 00 05 10 15 20 25 30 35 40 45 50 55 AM PM 00 01 02 03 04 05 06 07 08 09 10 11 : 00 05 10 15 20 25 30 35 40 45 50 55 AM PM      Sun Mon Tue Wed Thr Fri Sat Sun Mon Tue Wed Thr Fri Sat     * TCP 20-21 always * TCP 80 always * TCP 443 always * UDP 53 always * TCP 25 always * TCP 110 always * TCP 23 always