Ensure management access to the device is restricted from selected IP addresses and disable from WAN Zone

HighLevel 1Manual reviewsophos

Description

It is recommended to limit exposure of Firewall administration services from WAN/untrusted zone. When necessary, leverage on remote VPN or limiting only from selected IP addresses, or use of Sophos Central for firewall administration. For additional security control - RBAC and administrative accounts can be enabled with 2-factor authentication using built-in RADIUS Server. By disabling ‘HTTPS', ‘SSH' and ‘Network services (PING/PING6, DNS, SMTP RELAY, SNMP)' on WAN zone to protect against reconnaissance attempts, network scanners and potential adversary. Reviewed in the Sophos Firewall web admin console (SFOS has no plain-text configuration export to audit offline).

How it is checked

Audit method: Manual review

This recommendation cannot be checked automatically. A scan lists it with these instructions when you pass --include-manual.

Navigate to 'System > Administration > Device Access > Local service ACL'. Verify 'HTTPS,SSH,PING/PING6,DNS,SMTP RELAY, SNMP' on 'WAN Zone' is unchecked. Navigate to 'Local service ACL exception rule'. Verify that 'Added exception rule' only allows limited IP addresses for device management.

How it is fixed

Fix method: Guidance or infrastructure patch

Navigate to 'System > Administration > Device Access > Local service ACL'. Uncheck 'HTTPS,SSH,PING/PING6,DNS,SMTP RELAY, SNMP' on 'WAN Zone'.

Properties

Operating systems: Any
Tags: sophosfirewall-policy
Reference: CIS Sophos Firewall v22 Benchmark v1.0.0 - 1.1.6 Ensure management access to the device is restricted from selected IP addresses and disable from WAN Zone