ipfw firewall block

[Stari Karp]

Hi!

I am usind I start learning about IPFW firewall too but I do not know
yet why it clock me:

Feb 24 14:43:00 blabla kernel: ipfw: 65500 Deny UDP 192.168.1.3:59609
192.168.1.2:1900 in via bge0
Feb 24 14:43:02 blabla kernel: ipfw: 65500 Deny UDP 192.168.1.3:59610
192.168.1.2:3702 in via bge0
Feb 24 14:43:02 blabla kernel: ipfw: 65500 Deny UDP 192.168.1.3:59609
192.168.1.2:1900 in via bge0
Feb 24 14:43:02 blabla kernel: ipfw: 65500 Deny UDP 192.168.1.3:59609
192.168.1.2:1900 in via bge0
Mar  2 06:36:28 blabla kernel: ipfw: 65500 Deny UDP 192.168.1.3:55567
192.168.1.255:7 in via bge0
Mar  2 06:36:29 blabla kernel: ipfw: 65500 Deny UDP 1
92.168.1.3:55567 192.168.1.2:7 in via bge0
Mar  2 06:36:29 blabla kernel: ipfw: 65500 Deny UDP 192.168.1.3:55571
192.168.1.2:3702 in via bge0
Mar  2 06:36:29 blabla kernel: ipfw: 65500 Deny UDP 192.168.1.3:55570
192.168.1.2:1900 in via bge0
Mar  2 06:36:31 blabla last message repeated 3 times
Mar  2 06:36:31 blabla kernel: ipfw: 65500 Deny UDP 192.168.1.3:55571
192.168.1.2:3702 in via bge0

I did check my firewall with nmap:
nmap -sS -Pn -p- -T4 -vv --reason -oN 127.0.0 nmap.results and I got:

Nmap scan report for 127.0.0 (127.0.0.0)
Host is up, received user-set.
All 65535 scanned ports on 127.0.0 (127.0.0.0) are filtered because of
65535 no-
responses

Read data files from: /usr/local/share/nmap
# Nmap done at Fri Mar  2 08:43:23 2018 -- 1 IP address (1 host up)
scanned in 6
764.51 seconds

I did scan online too (nmap) and everything is okay.

Thank you.

SK