X0206 3 2023-01-24 1 0001078075 NETSCOUT SYSTEMS INC NTCT 0001888032 Nash Shannon C/O NETSCOUT SYSTEMS, INC. 310 LITTLETON ROAD WESTFORD MA 01886 1 0 0 0 Exhibit 24.1 - Power of Attorney (filed herewith). /s/ Greg Sloan, by Power of Attorney 2023-01-26