WLL Logbook page SNMP learning to control

Notes Project Output Archive Links

Index table
+Intro
+Prephase
+TimePlan
+Outline
+Research Phase
+-28 Feb.-
+-5 Mar.-
+-12 Mar.-
+- > Odysee
+-19 Mar.-
+-26 Mar.-
+-2 Apr.-
+Develope Tests Spec.
+-9 Apr.-
+Test Phase
+-16 Apr.-
+-23 Apr.-
+Review Results
+-7 May.-
+Prep. Report
+-14 May.-
+-21 May.-
+After Project

Trying to bring the breezecom specific MIB into the ucd snmp utils

Finally this works from shell with:
snmpwalk 147.252.133.149 public .iso.org.dod.internet.private.enterprises.breezecom And also with SCOTTY, but the SET doesn t work.
The ethernet traffic:

12:18:37.220756 147.252.133.130.1026 > 147.252.133.149.snmp: GetNextRequest(32) .1.3.6.1.4.1.710.3.2.3.1.1
12:18:37.238586 147.252.133.149.snmp > 147.252.133.130.1026: GetResponse(36) .1.3.6.1.4.1.710.3.2.3.1.1.0=3 (DF)
12:18:37.239691 147.252.133.130.1026 > 147.252.133.149.snmp: GetNextRequest(33) .1.3.6.1.4.1.710.3.2.3.1.1.0
12:18:37.257486 147.252.133.149.snmp > 147.252.133.130.1026: GetResponse(36) .1.3.6.1.4.1.710.3.2.3.1.2.0=1 (DF)
12:18:39.958317 147.252.133.130.1026 > 147.252.133.149.snmp: SetRequest(34) .1.3.6.1.4.1.710.3.2.3.1.1.0=2
12:18:39.975133 147.252.133.149.snmp > 147.252.133.130.1026: GetResponse(36) noSuchName@1 .1.3.6.1.4.1.710.3.2.3.1.1.0[err objVal!=NULL]2 (DF)

The snmp manager software told "no such object", while the local terminal told

MOD=0x1F. EV=0x110. SVR=0x00. error {NoAccess} on object: <.1.3.6.1.4.1.710.3.2>

Hence I need somehow set the access rights...
Here comes a small report:

Try:
snmpwalk 147.252.133.149 public .iso.org.dod.internet.private.enterprises.breezecom.breezecomPrvRev.brznetmib.brzWlan.brzWlanParams.brzMaxRate
Result:

enterprises.breezecom.breezecomPrvRev.brznetmib.brzWlan.brzWlanParams.brzMaxRate.0 = INTEGER: 3

Network traffic:

12:58:48.249472 147.252.133.130.1027 > 147.252.133.149.snmp: GetNextRequest(31) .1.3.6.1.4.1.710.3.2.3.1.1
12:58:48.267173 147.252.133.149.snmp > 147.252.133.130.1027: GetResponse(33) .1.3.6.1.4.1.710.3.2.3.1.1.0=3 (DF)
12:58:48.279328 147.252.133.130.1027 > 147.252.133.149.snmp: GetNextRequest(32) .1.3.6.1.4.1.710.3.2.3.1.1.0
12:58:48.297271 147.252.133.149.snmp > 147.252.133.130.1027: GetResponse(33) .1.3.6.1.4.1.710.3.2.3.1.2.0=1 (DF)

Try:
snmpwalk 147.252.133.149 public .1.3.6.1.4.1.710.3.2.3.1.1

Result:

enterprises.breezecom.breezecomPrvRev.brznetmib.brzWlan.brzWlanParams.brzMaxRate.0 = INTEGER: 3

Network traffic:

13:00:44.247344 147.252.133.130.1027 > 147.252.133.149.snmp: GetNextRequest(31) .1.3.6.1.4.1.710.3.2.3.1.1
13:00:44.265134 147.252.133.149.snmp > 147.252.133.130.1027: GetResponse(33) .1.3.6.1.4.1.710.3.2.3.1.1.0=3 (DF)
13:00:44.277608 147.252.133.130.1027 > 147.252.133.149.snmp: GetNextRequest(32) .1.3.6.1.4.1.710.3.2.3.1.1.0
13:00:44.295515 147.252.133.149.snmp > 147.252.133.130.1027: GetResponse(33) .1.3.6.1.4.1.710.3.2.3.1.2.0=1 (DF)

Try:
snmpset 147.252.133.149 public .iso.org.dod.internet.private.enterprises.breezecom.breezecomPrvRev.brznetmib.brzWlan.brzWlanParams.brzMaxRate i 2
Result:

Error in packet. Reason: There is no such variable name in this MIB. This name doesn't exist: enterprises.breezecom.breezecomPrvRev.brznetmib.brzWlan.brzWlanParams.brzMaxRate

Network traffic:

13:04:22.828409 147.252.133.130.1027 > 147.252.133.149.snmp: SetRequest(32) .1.3.6.1.4.1.710.3.2.3.1.1=2
13:04:22.844707 147.252.133.149.snmp > 147.252.133.130.1027: GetResponse(34) noSuchName@1 .1.3.6.1.4.1.710.3.2.3.1.1[err objVal!=NULL]2 (DF)

Local service terminal output:

MOD=0x1F. EV=0x110. SVR=0x00. error {NoAccess} on object: <.1.3.6.1.4.1.710.3.2>

Try:
snmpset 147.252.133.149 private .iso.org.dod.internet.private.enterprises.breezecom.breezecomPrvRev.brznetmib.brzWlan.brzWlanParams.brzMaxRate i 2
Result:

Error in packet. Reason: The value given has the wrong type or length

Network traffic:

13:08:37.575467 147.252.133.130.1027 > 147.252.133.149.snmp: C=private SetRequest(32) .1.3.6.1.4.1.710.3.2.3.1.1=2
13:08:37.592099 147.252.133.149.snmp > 147.252.133.130.1027: C=private GetResponse(34) badValue@1 .1.3.6.1.4.1.710.3.2.3.1.1[err objVal!=NULL]2 (DF)

Local service terminal output:

MOD=0x1F. EV=0x110. SVR=0x00. error {NoCreation} on object: <.1.3.6.1.4.1.710.3>

Try:
snmpset 147.252.133.149 private .iso.org.dod.internet.private.enterprises.breezecom.breezecomPrvRev.brznetmib.brzWlan.brzWlanParams.brzMaxRate o 2
Result:

Error in packet. Reason: The value given has the wrong type or length

Network traffic:

13:12:04.658081 147.252.133.130.1027 > 147.252.133.149.snmp: C=private SetRequest(37) .1.3.6.1.4.1.710.3.2.3.1.1=.1.3.6.1.2.1.2
13:12:04.674643 147.252.133.149.snmp > 147.252.133.130.1027: C=private GetResponse(39) badValue@1 .1.3.6.1.4.1.710.3.2.3.1.1[err objVal!=NULL].1.3.6.1.2.1.2 (DF)

Local service terminal output:

MOD=0x1F. EV=0x110. SVR=0x00. error {WrongType} on object: <.1.3.6.1.4.1.710.3.>

Try: from perl it works

Network traffic:

17:17:28.273570 147.252.133.130.1046 > 147.252.133.149.snmp: C=private SetRequest(38) .1.3.6.1.4.1.710.3.2.3.1.1.0=3
17:17:28.291190 147.252.133.149.snmp > 147.252.133.130.1046: C=private GetResponse(38) .1.3.6.1.4.1.710.3.2.3.1.1.0=3 (DF)

Try:
And from shell finally also (error was missing object id):

snmpset 147.252.133.149 private .1.3.6.1.4.1.710.3.2.3.1.1.0 i 2
Result:

enterprises.710.3.2.3.1.1.0 = 2

Network traffic:

17:24:37.155948 147.252.133.130.1050 > 147.252.133.149.snmp: C=private SetRequest(38) .1.3.6.1.4.1.710.3.2.3.1.1.0=2
17:24:37.173858 147.252.133.149.snmp > 147.252.133.130.1050: C=private GetResponse(38) .1.3.6.1.4.1.710.3.2.3.1.1.0=2 (DF)

Note:This shows also an example, that the security inside SNMP is not existing, guessing the right community name makes the device open to manipulation. And even worse, sniffing the Ethernet traffic, during remote administration opens all... Hence at least an firewall to UDP port 161 from outside is a MUST !