JUSX-DM-000084 - If the loopback interface is used, the Juniper SRX Services Gateway must protect the loopback interface with firewall filters for known attacks that may exploit this interface.

Information

The loopback interface is a logical interface and has no physical port. Since the interface and addresses ranges are well-known, this port must be filtered to protect the Juniper SRX from attacks.

Solution

If the loopback interface is used, configure firewall filters. The following is an example of configuring a loopback address with filters on the device. It shows the format of both IPv4 and IPv6 addresses being applied to the interface. The first two commands show firewall filters being applied to the interface.

[edit]
set interfaces lo0 unit 0 family inet filter input protect_re
set interfaces lo0 unit 0 family inet6 filter input protect_re-v6
set interfaces lo0 unit 0 family inet address 1.1.1.250/32
set interfaces lo0 unit 0 family inet6 address 2100::250/128

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Juniper_SRX_SG_Y24M07_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-223203r961863_rule, STIG-ID|JUSX-DM-000084, STIG-Legacy|SV-80505, STIG-Legacy|V-66015, Vuln-ID|V-223203

Plugin: Juniper

Control ID: 2f11ce48d6a31f05d8c2bea43040d8b6c39385e3a08e0b3ca53392d0a75a698a