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What are two common ports used to connect to a web server?
80 and 25
80 and 443
443 and 53
20 and 21
Port 80 and 443 are ports that are commonly used to connect to a web server. Although you can change this default port value (these ports are parts of well known ports), you face a very high risk of not having anyone connect unless it was designed that way for security purposes.
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