Configuring Radware DefensePro for Geo-Blocking and IP Reputation Filtering

Radware DefensePro can combine network-layer attack mitigation with access controls based on geography and the reputation of source IP addresses. Used carefully, these controls reduce unwanted traffic before it consumes application, firewall, or load-balancer resources. Used too aggressively, they can block legitimate customers, cloud services, travelling staff, and security researchers.

A reliable design starts with business requirements rather than a country list. Australian organisations often serve users across Sydney, Melbourne, Brisbane, Perth, and overseas markets, while their infrastructure may be hosted in AWS Sydney or split between local data centres and global services. The policy should therefore distinguish between traffic that is genuinely unwanted and traffic that is simply unusual.

Define The Enforcement Model

Begin by documenting the traffic path through DefensePro. Identify the protected virtual IP addresses, services, ports, upstream routers, load balancers, and any NAT devices that may alter the apparent source address. Geo-blocking and IP reputation filtering are only effective when DefensePro sees the original client IP.

Decide whether the first implementation should monitor, challenge, rate-limit, or block. A monitor-only phase provides useful evidence without immediately affecting customers. For public web applications, a staged approach is safer than applying a deny policy during a busy trading period or a major event such as an Australian Football League final.

Prepare Policy Inputs

Country identification depends on a geolocation database or service associated with the DefensePro deployment. Check how the platform receives updates, how frequently the database changes, and what happens when an address cannot be mapped. An unmapped address should usually be handled separately from a known high-risk country.

IP reputation filtering may use Radware reputation intelligence, locally maintained lists, or an external feed integrated into the security workflow. Clarify the meaning of each reputation category before enabling enforcement. A list marked for scanning or suspicious behaviour should not automatically receive the same treatment as a confirmed command-and-control address.

Create exceptions before enforcement. Include monitoring systems, vulnerability scanners, payment providers, remote administration networks, corporate egress addresses, and trusted partners. In Australia, a provider may use changing public ranges across Telstra, Optus, or TPG services, so confirm ownership and change-control arrangements rather than relying on a single manually recorded address.

Build Geo-Based Access Controls

In the DefensePro management interface, create country or region objects using the available geolocation criteria, then apply them to the relevant protected services. The exact menu names can vary between software releases and management models, so confirm the workflow in the version-specific Radware documentation. Attach the condition to the intended policy, service, or protection profile rather than applying a global rule unintentionally.

A deny list is generally easier to operate than an allow list. Blocking a small set of countries with no legitimate relationship to the application creates less operational risk than permitting only Australia and a few selected markets. An allow list may be appropriate for an internal portal, but it can disrupt travelling employees, international suppliers, VPN users, and Australian customers using overseas cloud gateways.

Add IP Reputation Filtering

Create a separate reputation rule instead of combining every condition into one opaque policy. This makes it easier to identify whether a connection was rejected because of its source country, a malicious IP classification, a protocol anomaly, or another DefensePro protection.

Use graduated responses where possible. A high-confidence malicious classification can be blocked, while a lower-confidence category may be rate-limited or logged for review. Reputation feeds can contain stale entries, shared hosting addresses, compromised residential connections, and carrier-grade NAT addresses. Blocking one address may affect many unrelated users.

Check whether trusted exceptions take precedence over reputation rules in the relevant DefensePro policy hierarchy. Avoid broad exceptions such as an entire cloud provider range unless the business case is strong. A compromised workload in a trusted range remains a potential source of abuse.

Control Rule Order And Scope

Policy order matters. A broad permit rule placed above a reputation deny rule may bypass the intended control, while a country block placed above an approved partner exception may reject legitimate traffic. Review the effective order and inheritance of access-control, protection, and exception rules.

Apply filtering to the smallest practical scope. A public customer portal, an API, and an administrative interface rarely need identical geography or reputation settings. Management access should normally be restricted through dedicated network controls, VPN access, or a bastion service instead of depending on public geo-blocking alone.

Test And Validate Behaviour

Test from approved Australian addresses and from locations that represent blocked or suspicious traffic. If a global testing service is unavailable, use controlled cloud instances in regions relevant to the business, while ensuring that testing complies with provider terms and internal security policy. Validate both IPv4 and IPv6, because a policy covering only IPv4 can produce inconsistent results.

Review DefensePro logs, counters, and event records for the action taken, matched rule, source address, country classification, and destination service. Correlate these records with load-balancer logs, web-server logs, and application telemetry. Pay close attention to reverse proxies and content delivery networks: if they terminate the client connection, DefensePro may see the proxy address rather than the end user.

Operate With Regular Review

Geo-blocking and reputation controls require ongoing maintenance. Countries associated with legitimate business activity may change, reputation feeds can be updated, and new SaaS providers may introduce unfamiliar egress addresses. Schedule a review after major application changes, mergers, new suppliers, and migration between local and international hosting.

Australian organisations should also consider privacy and record-keeping obligations when retaining source IP addresses and geolocation decisions. IP data can be personal information in some contexts, so align logging, access, retention, and disclosure practices with organisational policy and applicable Australian privacy requirements.

Operational Recommendations

Use the following practices when moving from a test policy to production enforcement:

• Start in logging or monitoring mode and establish a baseline of legitimate countries, providers, and source networks.
• Keep geo-blocking, IP reputation, and application-specific exceptions in separate, clearly named policy objects.
• Test IPv4, IPv6, NAT, proxy, CDN, and API traffic before relying on source-country decisions.
• Use short-lived emergency exceptions with an owner, reason, expiry date, and review record.
• Tune actions by confidence level instead of blocking every address in a broad suspicious category.
• Alert on sudden increases in blocked Australian traffic, which may indicate an incorrect rule or a routing change.
• Export or document the effective policy so it can be restored after an upgrade, migration, or management-platform failure.

A well-managed DefensePro deployment treats filtering as an adaptive control rather than a permanent country blacklist. Combining accurate traffic visibility, carefully ordered policies, reputation intelligence, and regular exception reviews provides stronger protection while preserving access for legitimate users across Australia and international markets.