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Old 09-01-2009, 09:18 AM   #1
Registered: Aug 2007
Location: Salvador, Brazil
Distribution: Debian, Ubuntu
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Debian + SNMPD does not work

SNMPD is running fine but it just don't accept requests

machine:~# nmap localhost -p 161

Starting Nmap 4.11 ( ) at 2009-09-01 11:10 BRT
Interesting ports on localhost (
161/tcp closed snmp

Nmap finished: 1 IP address (1 host up) scanned in 0.036 seconds
machine:~# ps aux | grep snmp
snmp      5236  0.0  0.3   7972  3916 ?        S    11:08   0:00 /usr/sbin/snmpd -Lsd -Lf /dev/null -u snmp -I -smux -p /var/run/
root      5260  0.0  0.0   2876   756 pts/0    S+   11:10   0:00 grep snmp
machine:~# iptables -L INPUT
Chain INPUT (policy ACCEPT)
target     prot opt source               destination
(part of the) configuration file:
# First, map the community name (COMMUNITY) into a security name
# (local and mynetwork, depending on where the request is coming
# from):

#  source          community
#com2sec paranoid  default         public
com2sec readonly  default         public
#com2sec readwrite default         private

# Second, map the security names into group names:

#               sec.model
group MyROSystem v1        paranoid
group MyROSystem v2c       paranoid
group MyROSystem usm       paranoid
group MyROGroup v1         readonly
group MyROGroup v2c        readonly
group MyROGroup usm        readonly
group MyRWGroup v1         readwrite
group MyRWGroup v2c        readwrite
group MyRWGroup usm        readwrite

# Third, create a view for us to let the groups have rights to:

#           incl/excl subtree                          mask
view all    included  .1                               80
view system included

# Finally, grant the 2 groups access to the 1 view with different
# write permissions:

#                context sec.model sec.level match  read   write  notif
access MyROSystem ""     any       noauth    exact  system none   none
access MyROGroup ""      any       noauth    exact  all    none   none
access MyRWGroup ""      any       noauth    exact  all    all    none

# -----------------------------------------------------------------------------
Old 09-02-2009, 02:33 AM   #2
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I think snmpd listens on UDP/161 by default...


Old 09-02-2009, 03:24 AM   #3
Registered: Nov 2008
Posts: 111

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Yes, the snmpd deamon should work on UDP port.

Which version of snmpd U are use? v1 v2 v3?
How do you test it?

Show us the result of:
snmpwalk -Os -c public -v 1
Old 09-02-2009, 05:23 AM   #4
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Location: /home/teebones
Distribution: sometimes this, sometimes that..
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to MODS: this thread should be moved to -> Linux Server section



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