high activity on port 3061 udp/tcp

Hello
Does anyone has seen an increase of activity on port 3061 tcp and udp?

today i register at least 5000 drops on my firewall just today ,all of the has the same ip as target.

some part of the logs
Dec 6 18:21:50 fw-int kernel: UDP DROP (global REJECT): IN=eth2 OUT=eth0 SRC=200.30.216.98 DST=XXX.XX.XX.XXX LEN=70 TOS=0x00 PREC=0x00 TTL=122 ID=61524 PROTO=UDP SPT=2189 DPT=3061 LEN=50 SRC Address are multiple ones

-- 
   Marcelo Bartsch
mbartsch@netglobalis.net
  www.netglobalis.net

PGP Fingerprint : 
877E 3A56 F523 B44A 3260  8F83 8916 E158 6100 F721


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