newbie iptables question

[wandaround@myrealbox.com (Wanda Round)]

After reading that I should look through /var/log/messages, I did
and found many lines like these:

Aug 12 04:36:53 towern kernel: |iptables -- IN=ppp0 OUT= MAC= 
SRC=201.129.122.85 DST=12.65.24.43 LEN=48 TOS=0x00 PREC=0x00 TTL=115 
ID=40023 DF PROTO=TCP SPT=4346 DPT=445 WINDOW=16384 RES=0x00 SYN URGP=0 

Aug 12 04:40:59 towern kernel: |iptables -- IN=ppp0 OUT= MAC= 
SRC=83.36.139.197 DST=12.65.24.43 LEN=52 TOS=0x00 PREC=0x00 TTL=46 
ID=19155 DF PROTO=TCP SPT=4845 DPT=445 WINDOW=16384 RES=0x00 SYN URGP=0 

The 12.65.24.43 was my dialup connection. The 201.129.etc and 83.36.etc
were from Mexico and Spain.

MAN iptables didn't help me at all! 

What are these lines telling me? Where can I find a simpler explanation
of iptables logs?

-- 
Wanda