Linux Administrator Question:
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What are the default ports used for SMTP,DNS,FTP,DHCP,SSH and squid?


Service: Port
SMTP: 25
SSH: 22
Squid: 3128
DNS: 53
FTP: 20 (data transfer) , 21 ( Connection established)
DHCP: 67/UDP(dhcp server) , 68/UDP(dhcp client)

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