What do the 4 different codes mean?

Question

Many of these IDS warnings in HH2 security logs in the  last few days, in specifics does anyone know what the different codes mean : i.e  what the { S.A.U.P}  {F.R.P} {F.A..} and {S.ARUP} that appear as the only differences in the attempts mean?.
Cheers.
06:11:38  29 Jun
IDS proto parser : tcp null port (1 of 1) : 115.236.59.28   81.xxxxx    0060 TCP 0->0 [S.A.UP] seq 3029953125 ack 0 win 80
04:41:27  29 Jun
IDS proto parser : tcp null port (1 of 1) : 115.236.59.28   81.xxxxxxx    0060 TCP 0->0 [.F.R.P] seq 3029953125 win 80
03:05:55  29 Jun
IDS proto parser : tcp null port (1 of 1) : 115.236.59.28   81.xxxxx    0060 TCP 0->0 [.FA...] seq 3029953125 ack 0 win 80
02:56:43  29 Jun
IDS proto parser : tcp null port (1 of 1) : 115.236.59.28   81.xxxxxx    0060 TCP 0->0 [S.ARUP] seq 3029953125 ack 0 win 80

Answer 1

Thanks for the info. That's where I looked but I don't have a Security subheading, though the firewall is active. No problem, just wanted to make sure I hadn't missed something obvious.
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