snmp 默认团体名检测利用

[root@izj6c2n1nth4tg8emd8h58z tmp]# lsb_release 
LSB Version:    :core-4.1-amd64:core-4.1-noarch
[root@izj6c2n1nth4tg8emd8h58z tmp]# lsb_release  -a
LSB Version:    :core-4.1-amd64:core-4.1-noarch
Distributor ID:    CentOS
Description:    CentOS Linux release 7.3.1611 (Core) 
Release:    7.3.1611
Codename:    Core
[root@izj6c2n1nth4tg8emd8h58z tmp]# yum install snmpcheck
[root@izj6c2n1nth4tg8emd8h58z tmp]# yum install -y net-snmp-utils

利用过程：

[root@izj6c2n1nth4tg8emd8h58z tmp]# snmpcheck -t *.*.*.
snmpcheck.pl v1. - SNMP enumerator
Copyright (c) - by Matteo Cantoni (www.nothink.org)

 [*] Try to connect to *.*.*.
 [*] Connected to *.*.*.
 [*] Starting enumeration at -- ::

 [*] System information
 -----------------------------------------------------------------------------------------------

 Hostname               : PEK1SRX001
 Description            : Juniper Networks, Inc. srx550 internet router, kernel JUNOS .3X48-D40., Build date: -- :: UTC Copyright (c) - Juniper Networks, Inc.
 Uptime system          :  days, ::26.30
 Uptime SNMP daemon     :  days, ::22.29
 Motd                   : -
...

[root@izj6c2n1nth4tg8emd8h58z tmp]# snmpbulkwalk  -v 2c -c public *.*.*. .1.3.6.1.2.1.
SNMPv2-MIB::sysDescr. = STRING: Juniper Networks, Inc. srx550 internet router, kernel JUNOS .3X48-D40., Build date: -- :: UTC Copyright (c) - Juniper Networks, Inc.
SNMPv2-MIB::sysObjectID. = OID: SNMPv2-SMI::enterprises.2636.1.1.1.2.86
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: ()  days, ::08.72
SNMPv2-MIB::sysContact. = STRING:
SNMPv2-MIB::sysName. = STRING: PEK1SRX001
SNMPv2-MIB::sysLocation. = STRING:
SNMPv2-MIB::sysServices. = INTEGER: 

参考：

　　https://wenku.baidu.com/view/c70591ee5ef7ba0d4a733b92.html

　　http://www.linuxidc.com/Linux/2013-10/91718p6.htm