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udp/161 still open after adding acl

Hi,

Just saw that udp/161 was open even though we have an ACL on snmp community -WHY IS THAT?

SNMP is closed so that i cannot do a snmpwalk, but it's concerning that udp/161 is still open.

snmp-server community ********************* RO SNMPACL
snmp-server community ********************* RW SNMPACL

ip access-list standard SNMPACL
permit *.*.*.* 0.0.0.255

nmap *.*.*.* -sU -p161

Starting Nmap 6.47 ( http://nmap.org ) at 2016-05-18

Nmap scan report for *.*.*.*
Host is up (0.0011s latency).
PORT STATE SERVICE
161/udp open snmp

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