jnxJsScreenMonAddrSpoof

JUNIPER-JS-SCREENING-MIB · .1.3.6.1.4.1.2636.3.39.1.8.1.1.1.1.7

Object

One method to gain access to a restricted network is to insert 
a bogus source address in the packet header to make the packet 
appear to come from a trusted source. This technique is called 
IP spoofing. The mechanism to detect IP spoofing relies on 
route table entries. 
                 
For example, if a packet with source IP address 10.1.1.6 arrives 
at port eth3, but the device has a route to 10.1.1.0/24 through 
port eth1. IP spoofing checking notes that this address arrived 
at an invalid interface as defined in the route table. A valid
packet from 10.1.1.6 can only arrive via eth1, not eth3.  The 
device concludes that the packet has a spoofed source IP address 
and discards it. 
              
This attribute records the address spoofing attack packets.

Context

MIB
JUNIPER-JS-SCREENING-MIB
OID
.1.3.6.1.4.1.2636.3.39.1.8.1.1.1.1.7
Type
column
Access
readonly
Status
current
Parent
jnxJsScreenMonEntry

Walk the column to discover its indexed instances, or supply every index to read one instance.

Walk the column
/usr/bin/snmpbulkwalk -v2c -c '<community>' -Pud -Ir -OQUs -m 'JUNIPER-JS-SCREENING-MIB' -M '/opt/observium/mibs/juniper:/opt/observium/mibs/rfc:/opt/observium/mibs/net-snmp' 'udp:<hostname>:161' 'JUNIPER-JS-SCREENING-MIB::jnxJsScreenMonAddrSpoof'
More examples
Read one indexed instance
/usr/bin/snmpget -v2c -c '<community>' -Pud -Ir -OQUv -m 'JUNIPER-JS-SCREENING-MIB' -M '/opt/observium/mibs/juniper:/opt/observium/mibs/rfc:/opt/observium/mibs/net-snmp' 'udp:<hostname>:161' 'JUNIPER-JS-SCREENING-MIB::jnxJsScreenMonAddrSpoof.<jnxJsScreenZoneName>'
Translate to a numeric OID
/usr/bin/snmptranslate -Pud -Ir -On -m 'JUNIPER-JS-SCREENING-MIB' -M '/opt/observium/mibs/juniper:/opt/observium/mibs/rfc:/opt/observium/mibs/net-snmp' 'JUNIPER-JS-SCREENING-MIB::jnxJsScreenMonAddrSpoof'

Syntax

Source
SNMPv2-SMICounter64
Base type
Unsigned64

Values & Constraints

Type Constraints
range: 0..18446744073709551615