The best routers are still vulnerable to attacks from malicious players. So, if you’re looking for ways to protect your Wi-Fi, check out our guide on keeping your router safe and sound.

Depending on your particular device, there are different ways to connect to a wireless network. We’ve tried to keep these guidelines as universal as possible, but if you’re using a different type of device, you may need to adjust them accordingly. You may also want to lock your wireless network occasionally to prevent unauthorized access.

Steps to Prevent DDoS Attacks On A Router :

STEP 1 – When a DDoS attack occurs, your first step is to switch your IP address. You can do this through the router’s configuration interface or by using a web browser and typing the current IP address, followed by your username and password.

STEP 2 – Go to your network settings and see if there’s a setting for changing your public or static IP address; if so, make the change and click OK. If you’re experiencing an ongoing DDoS attack, this might help.

STEP 3 – You may want to install a quality firewall to protect against future attacks. Plenty are free, but if you’d prefer something more robust, check out some paid options.

STEP 4 – Also, you should invest in a reputable VPN service. Running one while you surf the Internet makes it less likely your router will be attacked by hackers.

If you want to learn more about how to mitigate the risk, I suggest reading some basic information about DDoS attacks.

Read on…

What is a DDoS attack?

A Distributed Denial of Service (DDoS) is one of the most common forms of cybercrime. A DDoS attack overwhelms a target with traffic, often overloading its network and damaging both the targeted device and its infrastructure. Many businesses use DDoS attacks as part of their regular operations.

The goal of a DDoS attack is usually to disrupt the victim’s ability to conduct normal online activities. For example, a DDoS attack could prevent someone from accessing their bank account or an e-commerce site from processing payments. The attacker behind a DDoS attack doesn’t necessarily want to steal money; they just want to cause enough chaos to make the victim go away.

How Does a DDoS Attack Work?

The most common type of DDoS attack uses multiple computers to send traffic to a single destination. This type of attack is called a “distributed” attack because it requires more than one machine to participate.

The attacker sends packets to the targeted host using a protocol like TCP or UDP. These protocols allow data to travel across networks without requiring a connection between endpoints. A packet sent over the Internet travels to its destination. If the router receives too much traffic, it may drop some packets, causing routers to arrive out of order.

When this happens, the receiving computer interprets the packets as legitimate data, then processes the information and performs actions based on the instructions in the packet. In other words, the receiving computer executes the code inside the packet.

This process repeats itself thousands of times per second, resulting in a huge amount of traffic being sent to the targeted host. Because the packets contain no identifying information about the sender, the target host doesn’t know where the traffic originated. As a result, the host becomes overwhelmed with traffic and stops responding to legitimate requests.

This type of attack is often called a “denial of service” attack because it prevents users from accessing the targeted resource. However, unlike traditional denial-of-service attacks, which prevent access to a specific application, a DDoS attack targets a network or infrastructure rather than a particular user.

How to Know If You’re Under DDoS Attack

The most obvious symptom of a distributed denial-of-service (DDoS) attack is a site or server suddenly slowing down or becoming inaccessible. This can happen because someone has launched a DDoS against a particular target or because a large amount of unwanted traffic has overwhelmed the system. In either case, it’s important to know what you are looking for, because there are many reasons why a site might experience sudden spikes in traffic.

One of the easiest ways to identify whether something is wrong with your site is to use tools to monitor incoming traffic. Once you’ve identified suspicious activity, you can dig deeper into the cause. Here are some things to look out for:

• Traffic from a single IP address or a blocked IP.
• Traffic from devices sharing a common behavior profile, such as a certain type of smartphone or tablet.
• Multiple requests to a single URL or resource on your site.

If you notice any of these patterns, it could indicate a DDoS attack targeting you. If you suspect your site or service has been attacked, contact your hosting provider immediately and ask them to investigate. They’ll likely want to see evidence that the request originated outside your network and that a botnet didn’t send it.

How Do I Stop a DDoS Attack?

There are several steps you can take to minimize the impact of a DDoS attack:

• Identify the source of the attack – You can use IP addresses or domain names to determine whether someone has launched a DDoS attack.
• Monitor your logs – Regularly review your log files to identify suspicious activity.
• Use security tools – A good first step is to install an intrusion detection system (IDS). An IDS monitors network traffic and alerts you when something unusual occurs.
• Implement a firewall – A firewall protects your network from unauthorized access. By blocking incoming connections, it reduces the likelihood that an attacker can launch a successful DDoS attack against your network.
• Consider implementing a content filtering solution – Content filtering solutions block inappropriate websites and images from reaching your network. They also help protect against viruses and malware by scanning for malicious software before it enters your network.
• Install anti-malware software – Anti-malware programs scan your systems for known threats and remove any infections they find. This helps keep your systems free of malware.
• Update your operating system – Operating systems such as Windows XP and Mac OS X include patches designed to fix vulnerabilities in their underlying code. Applying these patches helps keep your systems secure.
• Avoid opening attachments – Don’t open email messages containing attachments. Instead, download the attachment to your desktop and open it using a file manager. If necessary, delete the message.
• Be careful what you click – Don’t click links in unsolicited emails. Instead, visit the website directly using your browser.
• Back up your data – Backing up your data is important in case your computer crashes or gets damaged. It also allows you to recover lost data if you lose your password or accidentally delete files.
• Protect your wireless devices – Wireless devices such as laptops and smartphones are vulnerable to DDoS attacks. To reduce this risk, ensure your device connects only to trusted networks. Also, consider installing a VPN on your mobile device to connect securely to untrusted networks.
• Watch out for phishing scams – Phishing scams attempt to trick people into giving away personal information. For example, scammers may send emails claiming to be from legitimate companies, asking you to update account details or provide other sensitive information. These emails may appear to come from a reputable company but actually contain malicious links that direct unsuspecting users to fake sites where they enter their login credentials.
• Use strong passwords – Strong passwords are long and complex, and you should avoid using simple passwords like “123456” or “password”. Consider changing your passwords regularly. Passwords should change every few months.

How Can Businesses Protect Routers Across Multiple Locations?

Businesses operating across multiple offices, branch locations, data centers, and remote sites need a consistent approach to router security. A weakness in one location can disrupt local connectivity and potentially affect access to centralized business applications. Protecting routers across multiple locations requires standardized configurations, centralized monitoring, regular maintenance, and clearly defined security responsibilities.

Standardize Router Security Configurations

Organizations should establish approved router configurations that define firewall rules, access controls, management protocols, logging, and permitted services. Consistent configurations across locations help reduce security gaps caused by inconsistent administration.

Disable unnecessary services, restrict administrative access to authorized personnel, and use strong authentication for router management. Configuration changes should follow a controlled approval and documentation process.

Centralize Router Monitoring and Alerting

IT teams should monitor router availability, bandwidth utilization, packet loss, latency, interface errors, and device resource utilization across all locations. Centralized monitoring makes it easier to identify unusual traffic patterns and determine whether a problem affects one branch or multiple sites.

Configure alerts for significant deviations from normal network behavior. Correlating router telemetry with firewall logs, ISP notifications, and application performance data can help teams distinguish a potential DDoS attack from ordinary connectivity problems.

Maintain Firmware and Configuration Backups

Keep router firmware updated according to vendor guidance and the organization’s change-management procedures. Maintain secure backups of approved configurations so that IT teams can restore known-good settings if a device is compromised or misconfigured.

Review configuration backups periodically and verify that recovery procedures work as intended.

Establish Clear Responsibilities Across Locations

Define which teams own router administration, monitoring, incident escalation, and communication with internet service providers. Businesses with limited internal networking resources may use a managed network provider to support routine monitoring and coordinated troubleshooting.

A standardized operating model helps organizations maintain consistent router security while reducing the operational burden of managing geographically distributed networks.

How Can Businesses Mitigate DDoS Attacks That Overwhelm Internet Bandwidth?

When a distributed denial-of-service (DDoS) attack consumes the available bandwidth of a business internet connection, legitimate users may lose access to applications, websites, VPNs, and other network services. In this situation, router-level firewall rules alone may not restore connectivity because malicious traffic can saturate the connection before it reaches the router.

Businesses should combine local network controls with upstream DDoS mitigation and a predefined incident-response process.

Understand the Limitations of Router-Level Protection

Routers and firewalls can filter certain unwanted traffic, apply access-control rules, and limit some forms of abusive traffic. However, if an attack fills the available capacity of the internet circuit, the router cannot create additional bandwidth simply by dropping packets.

Organizations should distinguish between an attack that exhausts router resources and one that saturates the upstream internet connection. The distinction determines whether local configuration changes are likely to help or whether upstream intervention is necessary.

Coordinate With the Internet Service Provider

Contact the ISP when attack traffic affects the internet connection or exceeds the router’s processing capacity. The provider may identify the traffic pattern, apply network-level filtering, or coordinate mitigation before traffic reaches the affected connection.

Businesses should keep ISP escalation contacts current and understand the provider’s DDoS response procedures before an incident occurs.

Use Upstream DDoS Mitigation Services

For organizations that depend on internet-facing applications or business-critical connectivity, a dedicated DDoS protection provider may offer traffic scrubbing, filtering, or diversion through mitigation infrastructure.

The appropriate service depends on the attack type, protected assets, traffic volume, network architecture, and whether the target is an IP address, website, application, or network connection.

Organizations should confirm which services and protocols are covered, how traffic is redirected for mitigation, and how legitimate traffic is restored after an attack.

Prepare a Mitigation and Escalation Plan

Document the thresholds that trigger escalation, the information the ISP or mitigation provider needs, and the teams responsible for approving changes. Include procedures for preserving relevant logs, communicating service impacts, and validating connectivity after mitigation.

By combining router-level controls with ISP coordination and upstream protection, businesses can better maintain network availability during bandwidth-saturating DDoS attacks.

What Should IT Teams Do During a DDoS Attack?

When a DDoS attack disrupts business connectivity, IT teams need to identify the impact, coordinate mitigation, protect critical services, and restore normal operations. A documented response process reduces confusion and helps technical teams make decisions based on network evidence, not assumptions.

Step 1: Confirm the Attack and Assess Its Impact

Review router interface statistics, bandwidth utilization, packet rates, CPU and memory usage, firewall logs, and network monitoring alerts. Compare current activity with normal traffic patterns to determine whether the incident matches a DDoS attack.

Check whether the issue affects a single application, one office, an internet circuit, or multiple locations. High utilization alone does not prove a DDoS attack; consider hardware faults, routing problems, and legitimate traffic spikes.

Step 2: Contact the ISP or DDoS Mitigation Provider

Escalate the incident when you suspect traffic saturation or router overload. Provide relevant details, including the affected public IP addresses, time of onset, observed traffic patterns, impacted services, and available logs.

Follow the organization’s established escalation process and coordinate mitigation with the provider responsible for the affected network.

Step 3: Apply Approved Mitigation Controls

Based on the investigation, authorized teams may apply targeted filtering, access-control changes, rate limiting, or other appropriate network controls. The response should focus on reducing malicious traffic while preserving legitimate business communication.

Avoid applying broad blocking rules without understanding their impact. Incorrect filtering can interrupt business applications, partner connections, remote access, or customer-facing services.

If the internet circuit is saturated, prioritize upstream mitigation rather than relying exclusively on changes to the local router.

Step 4: Protect Critical Business Services

Identify the applications and locations that are most important to business operations. Coordinate with application owners and business stakeholders to determine priorities and communicate service impacts.

Where the architecture supports it, approved failover paths, redundant connectivity, or alternative service delivery arrangements may help maintain access to critical services. Design and test these measures in advance; redundancy does not automatically protect against attacks that affect shared upstream infrastructure.

Step 5: Validate Recovery and Monitor for Recurrence

After mitigation begins, verify that bandwidth utilization, packet loss, latency, router resource consumption, and application availability are returning to acceptable levels.

Continue monitoring for renewed attack traffic and confirm that mitigation measures do not block legitimate users. Keep an incident timeline documenting actions, provider communications, service impacts, and recovery milestones.

Step 6: Conduct a Post-Incident Review

After the incident, determine what caused the disruption, how quickly you detected it, which controls were effective, and where response delays occurred.

Update router configurations, monitoring thresholds, escalation procedures, and incident-response documentation based on the findings. Assign corrective actions and track their completion.

A structured response helps IT teams improve recovery consistency and reduce the operational impact of future DDoS incidents.

Types of DDoS Attacks

In General, DDoS attacks are divided into three types.

1. Network-centric or volume-based attacks: These overload a target network by consuming available resources with large volumes of traffic. For instance, an IP amplification denial-of-service (DDoS) attack can consume significant network capacity, resulting in slowdowns or outages. A common DDoS tactic involves sending packets to a specific host or group of hosts, overwhelming them with so much data that they cannot handle legitimate traffic.
2. Application Layer: Application Layer Deny of Service occurs when there is too much traffic at the application level. For instance, if you refresh a webpage repeatedly, you’re causing a Denial of Service because the server cannot handle the number of requests.
3. Protocol attacks: Focus on weaknesses in the underlying protocol itself rather than attacking individual hosts. For instance, an attacker could send many HTTP requests to a server, overwhelming the service’s ability to respond. Or they might exploit a weakness in the TCP/IP stack to cause a denial of service condition.

What is the Point or Goal of a DDoS Attack?

The goal of a DDoS attack is to disrupt or disable a service, not necessarily to damage the server. For example, if an attacker were trying to take down a website, they might flood the server with requests from thousands of different IP addresses. They could also send large amounts of data over a slow connection or even send malicious code via email attachments, allowing them to execute arbitrary commands on the server. This type of attack aims to make it difficult for legitimate users to access the site, but not necessarily to harm the server itself.

What is the Difference Between DOS and DDoS?

Distributed Denial of Service Attack (DDoS) differs from traditional DoS attacks. Traditional DoS attacks target weaknesses in the protocol itself, whereas DDoS attacks target weaknesses in a target’s infrastructure.

In a traditional DoS attack, the attacker sends malicious traffic to a single target, usually a computer system. In contrast, a DDoS attack floods a target with malicious traffic, often overwhelming its ability to process legitimate traffic.

In addition to flooding a target with malicious traffic like a traditional DoS attack, a DDoS attack uses multiple techniques to make the attack harder to detect and contain.

What is the Purpose of a DDoS Attack

The purpose of a DDoS attack is to overwhelm and disrupt the targeted infrastructure. This may be accomplished through any of the above methods. The most effective way to accomplish this is to use multiple tactics simultaneously.

Can a Firewall Stop a DDoS attack?

A firewall is one of the most effective ways to prevent DDoS attacks. A firewall controls which IP addresses can connect to the network. If the firewall allows too much traffic, it will slow down or even completely shut off access to the network.

How Can Businesses Reduce Downtime During a DDoS Attack?

Reducing downtime during a DDoS attack requires more than blocking suspicious traffic. Businesses must understand which services are essential, identify dependencies between network components, and prepare recovery options to activate when normal connectivity is disrupted.

Identify Business-Critical Applications and Dependencies

Document the applications, network connections, remote access services, and external dependencies essential to business operations. Determine which locations and systems depend on each internet circuit, router, or upstream provider.

This dependency mapping helps IT teams prioritize recovery efforts and understand whether an attack on one connection could affect multiple services.

Define Recovery Objectives

Set recovery time objectives (RTOs) for critical services and recovery point objectives (RPOs) where data recovery matters. Although RTO and RPO are not DDoS mitigation controls themselves, they help businesses define acceptable recovery expectations and plan supporting infrastructure.

Use these objectives to determine which services need redundant connectivity, alternative access arrangements, or more comprehensive protection.

Design Redundancy With Independent Failure Paths

Where business requirements justify it, consider redundant internet circuits, diverse upstream providers, resilient routing, and alternative connectivity arrangements.

Evaluate whether the backup path shares infrastructure with the primary connection. Two circuits that depend on the same upstream network or physical route may still be affected by a common disruption.

Redundancy improves resilience only when the alternative path has sufficient capacity, is appropriately protected, and can be activated reliably.

Prioritize Essential Traffic and Services

Work with network and application teams to identify traffic that must remain available during an incident. Appropriate quality-of-service policies, filtering, and application-level protections may help manage resource contention, depending on the network design.

However, local traffic prioritization cannot recover bandwidth already consumed by an upstream attack. Bandwidth saturation may require ISP coordination or dedicated DDoS mitigation.

Establish Monitoring and Escalation Procedures

Use centralized monitoring to track network availability, latency, packet loss, traffic volume, and device health. Define alert thresholds and escalation paths so that abnormal activity reaches the responsible IT or network operations team promptly.

For organizations with multiple offices, central visibility can help identify the affected sites, coordinate troubleshooting, and provide consistent status updates to stakeholders.

Test Recovery Procedures and Review Performance

Periodically review failover procedures, ISP contacts, provider escalation arrangements, and recovery documentation. Conduct controlled exercises with authorized providers to validate that the organization can execute its response plan.

After an incident or exercise, assess detection time, mitigation time, service restoration time, and communication effectiveness. Use the findings to improve network resilience and reduce avoidable downtime.

By combining appropriate DDoS protection, resilient network design, monitoring, and tested response procedures, businesses can improve service continuity even when they cannot prevent every attack.

Conclusion 

DDoS attacks are becoming increasingly sophisticated. As a result, businesses need to be prepared to defend against them. Knowing how to protect your router against DDoS attacks is important. This includes having a plan to handle any problems that arise during a DDoS attack.