서버 구동기 스피콕 1.20.4 버전으로 

설정 아래와 같이 했고, 유튜브 영상 https://youtu.be/uPbqWxIyBqg?si=D7WG97KW9umqU99M 이걸로 포트포워딩/방화벽까지 해결했고, 이더넷도 개인으로 바꿨는데 저만 서버에 들어가지고 친구들은 안들어와지는 이유가 뭘까요?

#Minecraft server properties

#Sat Jan 06 14:24:48 KST 2024

enable-jmx-monitoring=false

rcon.port=25565

level-seed=

gamemode=survival

enable-command-block=false

enable-query=false

generator-settings={}

enforce-secure-profile=true

level-name=world

motd=A Minecraft Server

query.port=25565

pvp=true

generate-structures=true

max-chained-neighbor-updates=1000000

difficulty=easy

network-compression-threshold=256

max-tick-time=60000

require-resource-pack=false

use-native-transport=true

max-players=20

online-mode=true

enable-status=true

allow-flight=false

initial-disabled-packs=

broadcast-rcon-to-ops=true

view-distance=10

server-ip=

resource-pack-prompt=

allow-nether=true

server-port=25565

enable-rcon=false

sync-chunk-writes=true

resource-pack-id=

op-permission-level=4

prevent-proxy-connections=false

hide-online-players=false

resource-pack=

entity-broadcast-range-percentage=100

simulation-distance=10

rcon.password=

player-idle-timeout=0

debug=false

force-gamemode=false

rate-limit=0

hardcore=false

white-list=false

broadcast-console-to-ops=true

spawn-npcs=true

spawn-animals=true

log-ips=true

function-permission-level=2

initial-enabled-packs=vanilla

level-type=minecraft\:normal

text-filtering-config=

spawn-monsters=true

enforce-whitelist=false

spawn-protection=16

resource-pack-sha1=

max-world-size=29999984