Intrusion Detection System<\/h2>\n\n\n\n
IDS is security software that checks the network for suspicious behavior. If something unusual happens, it sends a warning message about it. Moreover, the system allows being aware of possible malicious activities. <\/p>\n\n\n\n
Two popular types of IDS:<\/strong><\/h3>\n\n\n\n\n- NIDS \u2013 Network Intrusion Detection System<\/strong><\/li>\n<\/ol>\n\n\n\n
It includes the analysis of traffic, both in and out of the network. The system monitors if there are any malicious activities. NIDS\u2019s goal is to detect and alert about it.<\/p>\n\n\n\n
<\/strong>2. HIDS \u2013 Host Intrusion Detection System<\/strong><\/p>\n\n\n\nIt monitors any differences in the file set in the system. If there are any changes, it gives an alert message. <\/p>\n\n\n\n
We should also mention the subsets of IDS: <\/h3>\n\n\n\n\n- Signature-based<\/strong><\/li>\n<\/ul>\n\n\n\n
This system tries to find instances of familiar threats. Once a verdict of a file is set, then goes the analysis of special characteristics and as a result, appears a signature that belongs to that very attack. These types of systems compare the pattern with an existing database of signatures. This is how the type of threat is detected. Please note that constant updates and expansion of the library are necessary. <\/p>\n\n\n\n
\n- Anomaly-based <\/strong><\/li>\n<\/ul>\n\n\n\n
This subset monitors the network\u2019s traffic for any suspicious behavior. First of all, it creates a normal model of the system\u2019s activity. Then it compares it with other existing models to find anomalies. That\u2019s the way to identify attacks for this type. <\/p>\n\n\n\n![\"\"](\"\/cybersecurity-blog\/wp-content\/uploads\/2021\/04\/img-suricata1.jpg\")
<\/figure>\n\n\n\nSuricata IDS<\/h2>\n\n\n\n
It includes the analysis of traffic, both in and out of the network. The system monitors if there are any malicious activities. NIDS\u2019s goal is to detect and alert about it.<\/p>\n\n\n\n
<\/strong>2. HIDS \u2013 Host Intrusion Detection System<\/strong><\/p>\n\n\n\n It monitors any differences in the file set in the system. If there are any changes, it gives an alert message. <\/p>\n\n\n\n This system tries to find instances of familiar threats. Once a verdict of a file is set, then goes the analysis of special characteristics and as a result, appears a signature that belongs to that very attack. These types of systems compare the pattern with an existing database of signatures. This is how the type of threat is detected. Please note that constant updates and expansion of the library are necessary. <\/p>\n\n\n\n This subset monitors the network\u2019s traffic for any suspicious behavior. First of all, it creates a normal model of the system\u2019s activity. Then it compares it with other existing models to find anomalies. That\u2019s the way to identify attacks for this type. <\/p>\n\n\n\nWe should also mention the subsets of IDS: <\/h3>\n\n\n\n
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<\/figure>\n\n\n\nSuricata IDS<\/h2>\n\n\n\n