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๊ณ„์ธต
๊ณ„์ธต๋ช…
์˜ˆ์‹œ ํ”„๋กœํ† ์ฝœ, ์žฅ๋น„
4๊ณ„์ธต
Open
์• ํ”Œ๋ฆฌ์ผ€์ด์…˜ ๊ณ„์ธต
FTP, SSH, DNS, TELNET, HTTP
3๊ณ„์ธต
Open
ํŠธ๋žœ์ŠคํฌํŠธ ๊ณ„์ธต
TCP, UDP, ๋กœ๋“œ๋ฐธ๋Ÿฐ์„œ
2๊ณ„์ธต
Open
๋„คํŠธ์›Œํฌ ๊ณ„์ธต
ICMP, IP, ARP, ๋ผ์šฐํ„ฐ
1๊ณ„์ธต
Open
๋ฐ์ดํ„ฐ๋งํฌ ๊ณ„์ธต
์Šค์œ„์น˜, ํ—ˆ๋ธŒ
1๊ณ„์ธต
Open
๋ฌผ๋ฆฌ ๊ณ„์ธต
LAN, MAN, WAN