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How to decrypt SNMP v3 packets

Latest reply: Jun 29, 2020 22:47:19 162 5 3 0

Issue Description


The following will introduce you how to deal with if the current network uses SNMP v3 to exchange packets, if you need to analyze SNMP v3 packets, then how to parse them.


Solutions


1. Open SNMP v3 packet with Wireshark;

2. Select the packet  SNMP part, right-click the menu, and select Protocol Preferences ---> Users Table;


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3. In the pop-up window, click the button "New";



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4. Fill in the corresponding information in the pop-up SNMP user window:

Engine ID: the engine id of the device, corresponding to the configuration "snmp-agent local-engineid" on the device

Username: username, corresponding to the configuration "snmp-agent usm-user v3 ***" on the device

Authentication model: authentication algorithm, corresponding configuration "snmp-agent usm-user v3 *** authentication-mode ***"

password: authentication password, which needs to be provided by the customer.

Privacy protocol: encryption algorithm, corresponding configuration "snmp-agent usm-user v3 *** privacy-mode ***"

Privacy password: Encrypted password, which requires customer to provide.


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5. Then click "OK" to add the SNMP user, and then click "Apply". The SNMP v3 packet can be parsed into plain text.


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lucian2003
MVE Created Jun 29, 2020 17:12:59 Helpful(0) Helpful(0)

Thanks, I like Wireshark tips
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Hello%20friends%2C%20I%20am%20a%20Telecommunications%20and%20electronics%20engineer%20and%20I%20just%20graduated%20as%20a%20master%20in%20telecommunications%20systems.%20I%20work%20in%20the%20telecommunications%20company%20of%20Cuba%2C%20ETECSA.%20I%20am%2035%20years%20old%20and%20I%20attend%20the%20transport%20network%20in%20my%20province%2C%20which%20is%20mainly%20Huawei.
hamza11
Created Jun 29, 2020 19:25:00 Helpful(0) Helpful(0)

thanks for sharing!
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The%20more%20you%20learn%2C%20the%20more%20you%20earn
AndreaBri
Created Jun 29, 2020 22:46:57 Helpful(1) Helpful(1)

awesome
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AndreaBri
Created Jun 29, 2020 22:47:06 Helpful(1) Helpful(1)

Thanks for the information
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AndreaBri
Created Jun 29, 2020 22:47:19 Helpful(2) Helpful(2)

Thanks for the information
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