If no pattern is found in the connection, then the matcher will stop inspecting the connection further. If a predefined pattern is found in the connection, then based on the conditions defined in the filter rules using the layer7 protocol, an action will be taken on the data stream. This regexp is used to define search patterns for keywords in the URLs. This matcher is based on the entries added to the ‘Regexp’ (Regular Expression) field in the L7 Protocol. The Layer7 protocol matcher searches for certain patterns of data in the first 10 packets, or in the first 2KB of data, in the TCP/UDP/ICMP streams of any new connections. Why blocking websites using L7 Protocol on MikroTik is a bad idea?Īs explained in the official MikroTik Wiki page, Layer7 protocol on MikroTik is one of the options used for the purpose of blocking access to certain websites.
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