Regex IPv4 & IPv6

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Regex is cool. But have you ever tried to grep IPv4 / IPv6 Adresses from a File or extract from a bunch of data ? Did you use Google Search and found lot of Links, Tip’s and Examples ? And non of them worked well ?

I can highly recommend CyberChef for stuff like that … https://gchq.github.io/CyberChef/

Regex from CyberChef

If you wanna use Regex in your own Scripts, here is a little Extract from Cyberchef.

/**
 * A regular expression that matches an IPv4 address
 */
export const IPV4_REGEX = /^\s*((?:\d{1,3}\.){3}\d{1,3})\s*$/;

/**
 * A regular expression that matches an IPv6 address
 */
export const IPV6_REGEX = /^\s*(((?=.*::)(?!.*::.+::)(::)?([\dA-F]{1,4}:(:|\b)|){5}|([\dA-F]{1,4}:){6})((([\dA-F]{1,4}((?!\4)::|:\b|(?![\dA-F])))|(?!\3\4)){2}|(((2[0-4]|1\d|[1-9])?\d|25[0-5])\.?\b){4}))\s*$/i;

MAC Addresses

and the same for MAC Address

/**
 * A regular expression that matches an MAC address
 */

export const MAC_REGEX = /^((?:[\da-fA-F]{2}[\s:.-]?){6})$/
Any Comments ?

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