Shadowing Practice: Proxy vs Reverse Proxy (Real-world Examples) - Learn English Speaking with Video
Les maken...
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Why is Nginet called a reverse proxy?
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What is a proxy anyways?
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Let's take a look.
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Two common types of proxy are forward proxy and reverse proxy.
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A forward proxy is a server that sits between a group of client machines and the internet.
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When those clients make requests to websites on the internet the forward proxy acts as a middleman intercepts those requests
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and talks to the web servers on behalf of those client machines why would anyone want to do
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that here are a few reasons one a forward proxy protects
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the client's online identity by using a forward proxy to connect
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to a website the ip address of the client is hidden
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from the server only the ip address of the proxy is visible, it would be harder to trace back to the client.
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Two, a forward proxy can be used to bypass browsing restrictions.
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Some institutions like governments, schools, and big businesses use firewalls to restrict access to the internet.
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By connecting to a forward proxy outside the firewalls, the client machine can potentially get around these restrictions.
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It does not always work because the firewalls themselves could block the connections to the proxy.
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3. A forward proxy can be used to block access to certain content.
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It is not uncommon for schools
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and businesses to configure the networks to connect all clients to the web through the proxy
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and apply filtering rules to disallow sites like social networks.
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It is worth noting that a forward proxy normally requires a client to configure its application to point to it.
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For large institutions, they usually apply a technique called transparent proxies to streamline the process.
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A transparent proxy works with layer 4 switches to redirect certain types of traffic to the proxy automatically.
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There is no need to configure the client machines to use it.
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It is difficult to bypass a transparent proxy when the client is on the institution's network.
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In summary, a forward proxy sits between the client and the internet and acts on behalf of the client.
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Now let's take a look at the reverse proxy.
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A reverse proxy sits between the internet and the web servers.
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It intercepts the requests from the clients and talks to the web server on behalf of the clients.
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Why would a website use a reverse proxy?
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Here are a few good reasons.
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One, a reverse proxy could be used to protect a website.
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The website's IP addresses are hidden behind the reverse proxy and are not revealed to the clients.
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This makes it much harder to target a DDoS attack against a website.
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Second, a reverse proxy is used for load balancing.
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A popular website handling millions of users every day is unlikely to be able to handle the traffic with a single server.
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A reverse proxy can balance a large amount of incoming requests
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by distributing the traffic to a large pool of web servers and effectively preventing any single one of them from becoming overloaded.
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Note that this assumes that the reverse proxy can handle the incoming traffic.
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Services like Kyle Flare put reverse proxy servers in hundreds of locations all around the world.
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This puts the reverse proxy close to the users and at the same time provides a large amount of processing capacity.
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Third, a reverse proxy caches static content.
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A piece of content could be cached on the reverse proxy for a period of time.
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If the same piece of content is requested again from the reverse proxy, the locally cached version could be quickly returned.
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Fourth, a reverse proxy can handle SSL encryption.
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SSL handshake is computationally expensive.
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A reverse proxy can free up the origin servers from those expensive operations.
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Instead of handling SSL for all clients, a website only needs to handle SSL handshake from a small number of reverse proxies.
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Reverse proxies are everywhere.
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For a modern website, it is not uncommon to have many layers of reverse proxies.
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The first layer could be an edge service like Cloudflare.
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The reverse proxies are deployed to hundreds of locations worldwide close to the users.
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The second layer could be an API gateway or load balancer at the hosting provider.
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Many cloud providers combine these two layers into a single ingress service.
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The user would enter the cloud network at the edge close to the user.
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And from the edge, the reverse proxy connects over a fast fiber network to the load balancer, where the request is evenly distributed over a cluster of web servers.
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Woordenschat en spreektips bij deze les
Deze spreekles is gebaseerd op de video “Proxy vs Reverse Proxy”. Deze woorden komen het vaakst terug: proxy, reverse, client, server, forward. Deze video bevat 58 zinnen en 786 woorden om na te spreken. Het gesproken deel duurt 5:06. De spreker praat in een natuurlijk tempo van ongeveer 154 woorden per minuut, dicht bij een alledaags gesprek. Slechts 68% van de woorden hoort bij de 3.000 meest gebruikte Engelse woorden, dus de woordenschat is pittig.
Belangrijke woorden in deze video
15 woorden uit de video die het leren waard zijn, met uitspraak en betekenis:
| Woord | Uitspraak | Betekenis |
|---|---|---|
| proxy zelfstandig naamwoord | /ˈpɹɑk.si/ | procuratiehouder, gevolmachtigde |
| server zelfstandig naamwoord | /ˈsɝvɚ/ | server |
| layer zelfstandig naamwoord | /ˈleɪ̯ɚ/ | laag |
| connect werkwoord | /kəˈnɛkt/ | verbinden |
| transparent bijvoeglijk naamwoord | /tɹænsˈpæɹənt/ | doorzichtig, transparant |
| cache zelfstandig naamwoord | /kæʃ/ | cache |
| cloud zelfstandig naamwoord | /ˈklaʊ̯d/ | wolk |
| institution zelfstandig naamwoord | /ˌɪn.stɪˈtʃuː.ʃən/ | instelling |
| provider zelfstandig naamwoord | /pɹəˈvaɪ.də(ɹ)/ | verlener |
| uncommon bijvoeglijk naamwoord | /ʌnˈkɒmən/ | zeldzaam |
| distribute werkwoord | /dɪˈstɹɪbjuːt/ | verdelen |
| bypass zelfstandig naamwoord | /ˈbaɪpæs/ | omweg, rondweg |
| restriction zelfstandig naamwoord | /ɹɪˈstɹɪkʃən/ | beperking |
| intercept werkwoord | /ɪntɚˈsɛpt/ | onderscheppen |
| topic zelfstandig naamwoord | /ˈtɑpɪk/ | onderwerp, thema |
Uitspraak om op te letten
- De klanken “sh” en “zh”: cache /kæʃ/, institution /ˌɪn.stɪˈtʃuː.ʃən/, restriction /ɹɪˈstɹɪkʃən/, potentially /pəˈtɛnʃ(ə)li/, encryption /ɪnˈkɹɪpʃən/
- Lange woorden — let op de klemtoon: institution /ˌɪn.stɪˈtʃuː.ʃən/, potentially /pəˈtɛnʃ(ə)li/, computationally /ˌkɑmpjʊˈteɪʃənəli/
Klanken die Nederlandstaligen lastig vinden:
- Stemhebbende eindmedeklinker — /b/, /d/, /g/, /z/, /v/ niet verscherpen: cloud /ˈklaʊ̯d/, anyways /ˈɛn.iˌweɪz/, subscribe /səbˈskɹaɪb/, browse /bɹaʊz/, overload /ˌəʊvəˈləʊd/
- /æ/ — opener dan de Nederlandse “e”: behalf /bɪˈhæf/, transparent /tɹænsˈpæɹənt/, cache /kæʃ/, bypass /ˈbaɪpæs/, static /ˈstæt.ɪk/
- /g/ — een harde plofklank, geen Nederlandse “g”: gateway /ˈɡeɪtˌweɪ/, configure /kənˈfɪɡə(ɹ)/, ingress /ˈɪŋɡɹɛs/
Zo oefen je met deze video
- Luister de hele video één keer zonder te spreken en noteer de woorden die je niet kent.
- Begin op 0,75× snelheid, spreek zin voor zin na en ga terug naar normale snelheid zodra het makkelijk gaat.
- Neem jezelf op en vergelijk met het origineel; let daarbij op woorden als proxy, server, layer.
Wat is de Shadowing-techniek?
Shadowing is een wetenschappelijk onderbouwde taalleermethode die oorspronkelijk is ontwikkeld voor professionele tolkentraining en gepopulariseerd door polyglot Dr. Alexander Arguelles. De methode is eenvoudig maar krachtig: je luistert naar native Engelse audio en herhaalt het onmiddellijk hardop — als een schaduw die de spreker volgt met slechts 1–2 seconden vertraging. In tegenstelling tot passief luisteren of grammaticadrills, dwingt shadowing je hersenen en mondspieren om echte spraakpatronen tegelijkertijd te verwerken en te reproduceren. Onderzoek toont aan dat het de uitspraaknauwkeurigheid, intonatie, ritme, verbonden spraak, luisterbegrip en spreekvaardigheid aanzienlijk verbetert — waardoor het een van de meest effectieve methoden is voor IELTS Speaking-voorbereiding en echte Engelse communicatie.