انجمن متا: طراحی سایت و سئو - دانلود قالب و تم - کریپتو

کامپیوتر، اینترنت، شبکه، مدیریت محتوا، تم => امنیت و شبکه, Network & Security => سرویس های اینترنت => نويسنده: Amir Shahbazzadeh در بعد از ظهر 17:16:08 - 12/10/11

عنوان: تفاوت پروتکل های Http و Https
رسال شده توسط: Amir Shahbazzadeh در بعد از ظهر 17:16:08 - 12/10/11
Https یا پروتکل خصوصی
Http یا پروتکل روتین

باید توجه داشت که Https از پورت 443 استفاده می کند و Http از پورت 80

زمانی که شما بر روی اینترنت در حال رد و بدل کردن اطلاعات می باشید این اطلاعات به صورت پروتکل های مختلف در حال رد و بدل شدن است که بستگی به نیاز کاربر و سرور مربوطه می تواند متفاوت باشد . اگر بخواهیم از سایت های عادی بازدید کنیم مرورگر شما به صورت پیش فرض از پروتکل http استفاده می کند و اگر بخواهیم وارد سایت یک بانک و موسسه مهم شویم نیاز به رمزنگاری اطلاعات می شود که آن زمان مرورگر شما به صورت خودکار به https یا همان Secure http تغییر حالت می دهد تا تمام اطلاعات رد و بدل شده بین شما و سرور مورد نظر به صورت رمزنگاری شده تبدیل شود.


(http://itknowledgeexchange.techtarget.com/overheard/files/2008/05/briefcase_icon.gif)
مقاله به زبان انگلیسی:
HTTPS HTTP over SSL or HTTP Secure
HTTPS (HTTP over SSL or HTTP Secure) is the use of Secure Socket Layer (SSL) or Transport Layer Security (TLS) as a sublayer under regular HTTP application layering HTTPS encrypts and decrypts user page requests as well as the pages that are returned by the Web server. The use of HTTPS protects against eavesdropping and man-in-the-middle attacks. HTTPS was developed by Netscape

HTTPS and SSL support the use of X.509 digital certificates from the server so that, if necessary, a user can authenticate the sender. Unless a different port is specified, HTTPS uses port 443 instead of HTTP port 80 in its interactions with the lower layer, TCP/IP

Suppose you visit a Web site to view their online catalog. When you're ready to order, you will be given a Web page order form with a Uniform Resource Locator (URL) that starts with https://. When you click "Send," to send


the page back to the catalog retailer, your browser's HTTPS layer will encrypt it. The acknowledgement you receive from the server will also travel in encrypted form, arrive with an https:// URL, and be decrypted for you by your browser's HTTPS sublayer

The effectiveness of HTTPS can be limited by poor implementation of browser or server software or a lack of support for some algorithms. Furthermore, although HTTPS secures data as it travels between the server and the client, once the data is decrypted at its destination, it is only as secure as the host computer. According to security expert Gene Spafford, that level of security is analogous to "using an armored truck to transport rolls of pennies between someone on a park bench and someone doing business from a cardboard box"

HTTPS is not to be confused with S-HTTP, a security-enhanced version of HTTP developed and proposed as a standard by EIT