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I am confused as to what the statelessness of HTTP means in terms of the client.
I get that stateless-ness means the server does not store any state information about the client but does the client still remember the identities of the servers it has interacted with, assuming cookies are not used?
The “remembering” logic you are talking about would have to be added to either the server, or the client, or both. HTTP is just a protocol, not an implementation, and that protocol is stateless because it doesn’t define any remembering logic as part of its specification
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Closed 7 days ago.
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We are setting up an ikev2 client vpn using strongswan. So far we have managed to setup a single server using letsencrypt certificate with eap-radius authentication method. We are able to connect to our server without any issue. Now we want to auto-scale the vpn so that the server gets scaled up or down depending on the number of users connected to the server but how do we do it?
What would be the best approach to achieve this?
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Closed 1 year ago.
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Whats the difference bewteen a GSLB and ADC. I can see that both can do load balancing, but i want to know the difference and additional functionalities each can perform. And i'd also want to know if one can replace the other.
GSLB is a general Term: Global Server Load Balancing
ADC is a Citrix product which does GSLB as well as proxying traffic.
To replace an ADC deployment, which saves f**king money(man they charge lots for it),
the proxy part can be replaced with NGINX + Server, the GSLB(which is just DNS with healthchecks) can be replaced with BIND(which actually runs on ADC as a service) and healthckeck to the backend server to remove/add record to DNS.
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Closed 5 years ago.
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Obviously the difference is that one can and one cannot access Netflix. But how does Netflix ban VPNs while not catching VPNs designed specifically to access Netflix?
The main difference is the question of whether Netflix knows about them yet or not.
In time, the VPNs which can access Netflix today will likely end up being blocked by from accessing the service when Netflix's analysis of incoming connections reveals IP addresses which could belong to VPNs used to circumvent their restrictions.
It is possible that some operators of VPN services may make use of IP addresses which are changed periodically to make detection less likely and this is how they may go for an extended period of time without being blocked.
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Closed 6 years ago.
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Suppose my Skype integration wants to filter notifications for a user to messages that contain the string "server down". Is this possible?
Per default Skype for Business (=SfB) can only block URL or attachments as written here. Maybe there exist an 3rd party application which can do that, but I do not think so. Reason: The problem here is that SfB can perform peer2peer connections (see more here). That means if you and your workmade are in the same network and no firewall restricts you both and you both perform a chat together, the chat is done between both of you (without a real server connection; for more infos see the official documentation inside the 2nd link). So a 3rd party software (which might sitting on the server) will not capture that kind of information. So what you might need is a client software on every PC. But what about the mobile clients then? So I do not think that such a software exists or would be possible to build.
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Closed 8 years ago.
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I want to understand http protocol in depth. Does anyone know where can I find relevant material for HTTP. A few questions that I have in particular are:
Why does when press enter after typing for eg. "google.com" it gets translated to "http://www.google.com" and not "ftp://www.google.com" or something else.
How does the http request gets transferred to a server, what routing algorithm it uses to decide which server to used, and inside that server where to locate the uniform resource".
Any pointers in this direction are most welcome!!
Because HTTP is simply the web standard for requests. We all agreed on using that when the web started, and now we are stuck with it (whether it is good or not).
HTTP stands for 'Hypertext Transfer Protocol' and is in fact the way how to exchange that information you see on your display when browsing.
FTP, and numerous other protocols are their standards (or in general methods) for their purpose. HTTP serves the purpose of communicating between client and server for the web.
And about how HTTP works internally, well, they wrote a few books on it. The standard is described by the IETF: Hypertext Transfer Protocol -- HTTP/1.1.