SYN attack?

Hi Folks,

Just checking the /var/log/messages and I see the following (excerpt):

Aug 25 10:45:05 localhost kernel: IN-internet:IN=eth0 OUT= MAC=fe:fd:46:55:81:37:00:02:fc:64:d8:af:08:00 SRC=70.73.58.120 DST=70.85.129.55 LEN=48 TOS=0x00 PREC=0x00 TTL=116 ID=30039 DF PROTO=TCP SPT=3289 DPT=135 WINDOW=16384 RES=0x00 SYN URGP=0
Aug 25 10:51:49 localhost kernel: IN-internet:IN=eth0 OUT= MAC=fe:fd:46:55:81:37:00:02:fc:64:d8:af:08:00 SRC=151.57.22.226 DST=70.85.129.55 LEN=404 TOS=0x00 PREC=0x00 TTL=52 ID=33002 PROTO=UDP SPT=31186 DPT=1026 LEN=384
Aug 25 11:08:02 localhost kernel: IN-internet:IN=eth0 OUT= MAC=fe:fd:46:55:81:37:00:d0:ba:1f:b5:cf:08:00 SRC=108.196.65.140 DST=70.85.129.55
LEN=404 TOS=0x00 PREC=0x00 TTL=57 ID=8496 PROTO=UDP SPT=31186 DPT=1026 LEN=384
Aug 25 11:09:58 localhost kernel: IN-internet:IN=eth0 OUT= MAC=fe:fd:46:55:81:37:00:d0:ba:1f:b5:cf:08:00 SRC=66.199.245.201 DST=70.85.129.55
LEN=48 TOS=0x00 PREC=0x00 TTL=117 ID=53457 DF PROTO=TCP SPT=1770 DPT=1433 WINDOW=65535 RES=0x00 SYN URGP=0
Aug 25 11:10:01 localhost kernel: IN-internet:IN=eth0 OUT= MAC=fe:fd:46:55:81:37:00:d0:ba:1f:b5:cf:08:00 SRC=66.199.245.201 DST=70.85.129.55
LEN=48 TOS=0x00 PREC=0x00 TTL=117 ID=55647 DF PROTO=TCP SPT=1770 DPT=1433 WINDOW=65535 RES=0x00 SYN URGP=0
Aug 25 11:32:46 localhost kernel: IN-internet:IN=eth0 OUT= MAC=fe:fd:46:55:81:37:00:02:fc:64:d8:af:08:00 SRC=70.68.73.144 DST=70.85.129.55 LEN=64 TOS=0x00 PREC=0x00 TTL=37 ID=22207 DF PROTO=TCP SPT=2900 DPT=135 WINDOW=53760 RES=0x00 SYN URGP=0
Aug 25 11:51:05 localhost kernel: IN-internet:IN=eth0 OUT= MAC=fe:fd:46:55:81:37:00:d0:ba:1f:b5:cf:08:00 SRC=81.176.69.92 DST=70.85.129.55 LEN=40 TOS=0x00 PREC=0x00 TTL=97 ID=256 DF PROTO=TCP SPT=80 DPT=1222 WINDOW=16384 RES=0x00 ACK SYN URGP=0

Can anyone advise what's going on here? Doesn't look that high traffic (the requests seem quite spaced out, and not all from the same host), but I wasn't sure if it's something I should be worried about.

Thanks, Tom