Network Services - CompTIA A+ 220-1001 Prof Messer
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If I wanted to make a central storage to access all of my movies, coul I use a file server?
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@mary said in Network Services - CompTIA A+ 220-1001 Prof Messer:
If I wanted to make a central storage to access all of my movies, coul I use a file server?
Yes - in fact that IS what you are making. Anything that uses NFS or SMB/CIFS among a few other protocols are what make a server a file server.
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@mary said in Network Services - CompTIA A+ 220-1001 Prof Messer:
If I wanted to make a central storage to access all of my movies, coul I use a file server?
You'd have to. Movies are files, so anything that serves them out is a file server.
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What exactly is bandwidth shaping? I've never herd that term before.
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@connorsoliver said in Network Services - CompTIA A+ 220-1001 Prof Messer:
What exactly is bandwidth shaping? I've never herd that term before.
That's an uncommon term, we normally say "traffic shaping". But same difference.
It's a form of Quality of Service, or related to quality of service, where traffic is monitoring and available performance for different types of traffic is adjusted to make some protocols or tasks perform better than others. For example, with traffic shaping you can make teleconferencing, phone calls, and posting on MangoLassi get the best performance, while streaming Netflix and IHeartRadio get the slow lane.
Unlike traditional QoS, it's about "encouraging" patterns rather than enforcing. With normal QoS, phone traffic might get priority, period. But with shaping, it gets more "weight" in the algorithm, but doesn't get a guarantee of always going first.
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Wow Network Services are really needed.
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are proxy servers used for security purposes? do they have other functions?
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@valentina said in Network Services - CompTIA A+ 220-1001 Prof Messer:
are proxy servers used for security purposes? do they have other functions?
Yes, very much so.
They are also very commonly used to allow a single IP address to be used for many services. The most common example... a single proxy server with a single (expensive) public IP address can handle requests for hundreds of thousands, or even millions, of websites. Behind the proxy server can be one or one million separate web servers each serving out applications or web sites or whatever and the proxy server can look at the incoming request and determine, based on the URL used, which server and port to send the request to behind itself.
Because of the above, they are often used for load balancing because they can send requests to different servers for the same application or site.
Proxy servers often have caches in them, too. So they quite often store simple, static information "at the edge" to deliver it faster while the application servers behind them do the heavy work for database requests and stuff.
Proxy servers are sometimes used to "hide" the true location of a server. Cloudflare famously does this so that attackers have no idea where a web site actually comes from, all they see is Cloudflare's proxies.
A proxy can also do things like handle SSL security so that web servers behind it (or other servers, proxy doesn't imply web) don't have to do that work, as well.
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@scottalanmiller said in Network Services - CompTIA A+ 220-1001 Prof Messer:
@valentina said in Network Services - CompTIA A+ 220-1001 Prof Messer:
are proxy servers used for security purposes? do they have other functions?
Yes, very much so.
They are also very commonly used to allow a single IP address to be used for many services. The most common example... a single proxy server with a single (expensive) public IP address can handle requests for hundreds of thousands, or even millions, of websites. Behind the proxy server can be one or one million separate web servers each serving out applications or web sites or whatever and the proxy server can look at the incoming request and determine, based on the URL used, which server and port to send the request to behind itself.
Because of the above, they are often used for load balancing because they can send requests to different servers for the same application or site.
Proxy servers often have caches in them, too. So they quite often store simple, static information "at the edge" to deliver it faster while the application servers behind them do the heavy work for database requests and stuff.
Proxy servers are sometimes used to "hide" the true location of a server. Cloudflare famously does this so that attackers have no idea where a web site actually comes from, all they see is Cloudflare's proxies.
A proxy can also do things like handle SSL security so that web servers behind it (or other servers, proxy doesn't imply web) don't have to do that work, as well.
Hrm, I only have around 20 subdomains pointing to the same IP so far. If my home lab box was a little beefier I'd take this as a challenge. (Scott might as well be describing my home lab environment here.)
