Regular Expressions 101

Explanation

Pro

SRC = the literal text SRC = (case sensitive)

Group 1((?:\d{1,3}\.?\b){4})

Non-Capturing Group(?:\d{1,3}\.?\b){4}

{4}repeats the group contents below exactly 4 times:

\d{1,3}a digit, repeated between 1 and 3 times

\.?optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

\ban ASCII word boundary

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

SRC = ((?:\d{1,3}\.?\b){4})

OUT = br0 SRC = 222.187.221.84 DST = 192.168.1.20 LEN = 60 OUT = br0 SRC = 222.187.221.84 DST = 192.168.1.20 LEN = 60 OUT = br0 SRC = 222.187.221.84 DST = 192.168.1.20 LEN = 60

Extraction

OUT = br0 SRC = 222.187.221.84 DST = 192.168.1.20 LEN = 60 OUT = br0 SRC = 222.187.221.84 DST = 192.168.1.20 LEN = 60 OUT = br0 SRC = 222.187.221.84 DST = 192.168.1.20 LEN = 60