[squid-users] aca services

Could somebody tell what is this aca services ..
My squid .. is listening on port 62/udp which in /etc/services is
aca Services

# nmap -sU 127.0.0.1
Starting nmap V. 3.00 ( www.insecure.org/nmap/ )
Interesting ports on localhost (127.0.0.1):
(The 1465 ports scanned but not shown below are in state: closed)
Port State Service
53/udp open domain
62/udp open acas
514/udp open syslog

Nmap run completed -- 1 IP address (1 host up) scanned in 5 seconds

-----------
# fuser 62/udp
62/udp: 1999
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# ps xau| grep 1999
squidu 1999 0.5 3.1 53108 48648 ? S Jul03 68:10 (squid) -D

Thank you,
Seby.