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Cisco Pix SNMP error

Posted on 2008-10-02
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Last Modified: 2008-10-06
Hi all,

We have a Pix501 that we're using as a small router between 2 networks. This is all working fine. Now we would like to do snmp polls to graph the interface but I get these errors:

710003: UDP access denied by ACL from 10.203.1.10/7951 to inside:10.203.1.15/snmp

I don't have any ACL's on the inside interface... what am I doing wrong?

Thanks!
PIX Version 6.3(1)

interface ethernet0 auto

interface ethernet1 100full

nameif ethernet0 outside security0

nameif ethernet1 inside security100

fixup protocol ftp 21

fixup protocol h323 h225 1720

fixup protocol h323 ras 1718-1719

fixup protocol http 80

fixup protocol ils 389

fixup protocol rsh 514

fixup protocol rtsp 554

fixup protocol sip 5060

fixup protocol sip udp 5060

fixup protocol skinny 2000

fixup protocol smtp 25

fixup protocol sqlnet 1521

names

access-list acl_outside permit icmp any any

access-list acl_outside permit icmp any any echo

access-list acl_outside permit icmp any any echo-reply

access-list acl_outside permit icmp any any time-exceeded

pager lines 24

logging console informational

mtu outside 1500

mtu inside 1500

ip address outside 192.168.31.2 255.255.255.0

ip address inside 10.203.1.15 255.255.255.0

ip audit info action alarm

ip audit attack action alarm

pdm history enable

arp timeout 14400

global (outside) 1 interface

nat (inside) 1 0.0.0.0 0.0.0.0 0 0

static (outside,inside) 10.203.1.16 192.168.31.1 netmask 255.255.255.255 0 0

access-group acl_outside in interface outside

route outside 0.0.0.0 0.0.0.0 192.168.31.1 1

route inside 192.168.0.0 255.255.0.0 10.203.1.1 1

timeout xlate 3:00:00

timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225 1:00:00

timeout h323 0:05:00 mgcp 0:05:00 sip 0:30:00 sip_media 0:02:00

timeout uauth 0:05:00 absolute

aaa-server TACACS+ protocol tacacs+

aaa-server RADIUS protocol radius

aaa-server LOCAL protocol local

snmp-server host inside 192.168.45.1 poll

no snmp-server location

no snmp-server contact

snmp-server community public

floodguard enable

telnet timeout 5

ssh 0.0.0.0 0.0.0.0 inside

ssh timeout 5

console timeout 0

terminal width 80

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Question by:o-tvw-ee
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6 Comments
 
LVL 33

Expert Comment

by:MikeKane
ID: 22624041
That error message would indicate that a device at 10.203.1.10 was trying to send snmp traps to your interface IP at 1.15     Check that 1st.  

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Author Comment

by:o-tvw-ee
ID: 22624115
The error message is showing when I do a snmpwalk on the interface.
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LVL 33

Expert Comment

by:MikeKane
ID: 22624188
There would be an implicit deny....  

Try adding this to explicitly allow the snmp items


access-list acl_inside permit udp any any eq snmp

access-group acl_inside in interface inside

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Author Comment

by:o-tvw-ee
ID: 22624216
Sorry.. that didn't change anything..
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LVL 79

Accepted Solution

by:
lrmoore earned 500 total points
ID: 22635171
Good reference for you
http://www.cisco.com/en/US/docs/security/pix/pix63/configuration/guide/sysmgmt.html#wp1091257

>snmp-server host inside 192.168.45.1 poll
You have only allowed snmp from this one host, yet you are trying to walk from 10.203.1.10
Add this:
   snmp-server host inside 10.203.1.10
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Author Comment

by:o-tvw-ee
ID: 22647560
sigh.. /me slaps himself to the head...

tnx!
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