IDS vs. IPS –Main Peculiarities and DifferencesPosted on 7th May 2021
When you face a cyber-attack, there cannot be a single effective solution. Every attack is different and brings different challenges. Thus, two key methods assure online security. It includes Intrusion Detection Systems (IDS) and Intrusion Prevention Systems (IPS). When you decide what particular system to pick up, it is recommended to learn the top characteristics first. Define which method is safer. Check how every particular method works. Be careful when deciding on what exact system to select eventually.
Which Method is Safer – IDS vs. IPS
All users can choose between two main security options. Both systems are effective and can be used to improve safety. Still, with numerous similarities, they have lots of differences as well. You should learn the top peculiarities to assure the right choice in the end. Every company and Internet admin has its own set of requirements for security methods.
When you select between IDS and IPS, you need to pay attention to every detail. When talking about safety, the named systems pose different characteristics.
- Intrusion Detection Systems (IDS)
The algorithm of IDS work is based on scanning incoming traffic. It gets checked for potential threats and cyberattacks. IDS work relates to detection methods. The traffic is searched for any suspicious activities that can result in damaging the network or device. Once the suspicious activity is detected, the website or admin gets an instant notification
- Intrusion Prevention Systems (IPS)
IPS work is based on more proactive tactics. The incoming traffic is blocked immediately once the threat is detected. The detention mechanisms in both systems can be similar. Still, IPS prefers more proactive actions.
How do Intrusion Detection Systems Operates
Intrusion Detection Systems is based on detention first, them – notifications. Once the threat is detected, the notification is sent to seniors. In fact, IDS mostly searches for threats. Thus, it does not neutralize the threat immediately. In fact, the system is perfectly operating when in partnership with admins. The last ones respond to the detected threats with the instruments they have.
Intrusion Detection Systems can be put into two main categories:
- Network Intrusion Detection Systems (NIDS) – is focused on the incoming traffic to the network. The system does not pay much attention to the device. It is a great protection system for large networks of applications or hardware.
- Host Intrusion Detection Systems (HIDS) – this particular method allows focusing on the certain “host.” It can be a particular device like a server or personal computer. This method allows checking the incoming traffic the hardware gets. Besides, it constantly scans the software for suspicious activity.
Both these systems can be very useful. When NIDS protects the network, HIDS assures device-focused protection. With both systems used, you can assure complete security on all existing levels.
IDS Detection Methods
Intrusion Detection Systems work is mostly based on detection methods. IDS uses two key detection strategies to assure safety. Both strategies have strong and weak points.
- Anomaly-based systems
These systems provide the understanding of “non-suspicious” network activity. When admins install the software, they define what activity can be named “normal.” Therefore, the system learns how to define the “abnormal” activity. If the system knows what activity can be labeled “normal,” it helps to faster spot any anomalies.
- Signature-based systems
These systems are based on predetermined databases’ use. With the databases of recognized threats and suspicious behaviors, it becomes easier to define real threats. The created “blacklist” allows the IDS system to check the threats and compare them with blacklisted ones. The mentioned list can include any threats. It often covers DDOS attack information, email lines related to previous attacks, any malware details, etc.
Every system has its advantages and disadvantages. Anomaly-based systems often define non-suspicious activities like threats. It is due to the deviated understanding of the “normal” activities. Still, since it is an IDS system, you face no risks. The system will still be notifying the human admin about the threat. The last one will be deciding on whether to block the traffic or not. Signature-based systems require constant updates. If the list of threats is not updated timely, the system can be exposed to serious threats.
How do Intrusion Prevention Systems Operate
The Intrusion Prevention Systems (IPS) are based on the proactive prevention of threats. IPS systems are also divided into network-wide and host-focused ones. The detention mechanisms in both systems are quite similar to IDS. The main difference between systems starts after the threat’s detection. IDS notify the admin about the threat. The admin uses all the existing prevention methods to block or eliminate the threat. IPS systems do not bother with notifying the admin. They launch the prevention methods immediately. IPS can easily block incoming traffic. They often use the network’s firewall or reject the distrustful data package. Besides, they can simply cut the connection at once. Thus, the network or a device will be no longer exposed to the threat.
Main Differences Between IDS and IPS
Both systems can be used for your network or device protection. Some may select IPS once checking the article. Still, IPS also has its disadvantages. Especially the false positive threats. The system cannot act like a human admin and pay attention to every particular threat. It operates automatically, paying no attention to details. Still, certain nuances the human admin can detect may be very important. Sometimes, IPS blocks certain data packages required by a network.
IDS does not launch prevention methods at once. Still, they notify admins fast enough to deal with a threat. This system is surely not very fast. Still, the human admin decision on a threat can be more correct. It is often better to assign the work to a human admin than to an automated system. Nevertheless, IPS software gets its improvements every day. Thus, many websites can select it easily especially if they deal with a huge amount of incoming data packages.
IDS and IPS are two top systems for preventing threats. It is useful to learn about the pros and cons of both systems before selecting one. With lots of similarities, some basic characteristics of the systems differ greatly. It is also important to define your purposes first. It helps to know what type of system you require. Both IDS and IPS systems offer two main types – network-wide and host-focused. Thus, they select whether to focus on the network or host (server or computer). You should choose the most fitting security measures to assure full protection on every existing level.