what is portsentry? is it needed?

Hi, I noticed that a command called portsentry use about 40-60% of CPU. What is this for? Can I kill it?

10:19am up 15 min, 1 user, load average: 2.06, 2.38, 1.77
153 processes: 148 sleeping, 5 running, 0 zombie, 0 stopped
CPU states: 55.3% user, 36.8% system, 0.0% nice, 7.8% idle
Mem: 510880K av, 162548K used, 348332K free, 468K shrd, 4068K buff
Swap: 131504K av, 0K used, 131504K free 79312K cached

PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND
774 root 14 0 508 508 436 R 38.5 0.0 6:18 portsentry
2007 mysql 14 0 7184 7184 2104 R 20.7 1.4 0:09 mysqld
2446 root 9 0 1104 1100 832 R 8.1 0.2 0:00 top
2326 root 9 0 2036 2036 1704 R 0.0 0.3 0:00 sshd
2441 index 9 0 2868 2868 1176 R 0.0 0.5 0:00 ads.pl

Thanks for your help.

 

 

 

 

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