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How can I scan/record IP requests from a specific application or task? Could I do this purely in command line or is extra software required?
Wireshark is a very powerful tool for tracing connections and even examining packet content. By using the appropriate filters you can monitor all network activity of your application.
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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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I know that in LSR, each router sends LSA packet to its neighbors, which is then flooded. But I can't figure out how the routers know the complete topology in this process.
Link state update packets contains information about originating router, its interfaces and neighbors connected via these interfaces, therefore, by collecting and joining this information any router can build graph of the network (or area) to which it belongs.
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I am using prometheus to graph stats on my server. The problem is that that annybody can access the graphs from http://my.Ip.Adress:port/index.html. How can i password protect this access? alternatively: possible to password protect the port?
Prometheus doesn't have any built-in authentication or authorisation (there's just too many possible configurations), however you can use a reverse proxy to achieve this.
http://www.robustperception.io/adding-basic-auth-to-prometheus-with-nginx/ describes one way to do it.
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Question on a review:
If a packet is mistakenly routed in a closed loop among a number of machines, it could theoretically loop in the network forever. How does IP ensure that this cannot happen for Internet Packets?
There is such thing as TTL. You should perform basic internet search before posting a question.
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I have got telnet server running on a bsd target. I want to connect to this target from multiple other machines. Surprisingly it does not allow more connections.
I checked why and found it is not listening(listen) in a loop. So, I kinda fixed it. But I was wondering is there any specific reason why telnetd code is kept with single connection at a time? (I am allowed to connect to telnetd server from only one client for a particular port.)
(I know telnet is not a safe option. But I am having just fun on small embedded platform and getting things working is more imp than security at this moment.)
Thanks
Telnet is supposed to be launched by inetd. You need to configure inetd to do the listening for you.
The wikipedia article that I linked to explains how to do that.