Services and protocols to restrict torrent traffic at a university campus [closed]

As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for … Read more

Configure Protocols using iptables log file with ndpi [closed]

Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 8 years ago. Improve this question I am using iptables with ndpi to filter my network and add two rules to my iptables rules they are … Read more

DNS and OSI Layer Working

I would like to clarify a doubt that’s haunting me after learning DNS. I’ll briefly write it as a question. “A user was watching a video in youtube and suddenly the DNS server which was used by the user(primary and alternative dns) went down”. From DNS perpective what I can understand is that the user should be … Read more

Calculation units in EtherType frame field [closed]

Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Server Fault. Closed 8 years ago. Improve this question The EterType ethernet frame field value is represent a payload field length in bits or bytes? Answer Ethertype doesn’t encode payload length, but … Read more

Security issues with SMTP

I am looking at SMTP and POP3 and am trying to find the security issues with both protocols, I have found that SMTP can be easily impersonated on port 25. However I am struggling to find security issues, only standard issues like internet connection etc. Can anyone help me find security issues with both protocols … Read more

Is the Matrix protocol Fediverse?

The title says it all. Reading about the Fediverse, the Matrix protocol seems to fit its characteristics, however I found no reference of that anywhere. Answer Yes Matrix it definitely is a Fediverse protocol. See for example this old site: https://www.elegantthemes.com/blog/business/self-hosted-matrix-with-riot-team-chat-under-your-control It is weird, Wikipedia page for Matrix https://en.wikipedia.org/wiki/Matrix_(protocol) says only ” … protocol for … Read more

Tool to download only selective pages / particular page from a document ! [closed]

Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Server Fault. Closed 12 years ago. Improve this question Many tools have the feature of printing a particular page or a continous range of selective pages. Similarly, we might require to see … Read more

Why bittorent needs many ports [closed]

Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Server Fault. Closed 10 years ago. Improve this question Why bittorrent needs as many ports?..Why not just one-2? I know that some of them are used for peer discovery, but dont exactly … Read more

Does anything changes for a client in the API communication after the command STARTTLS is sent and a response received

I’m trying to understand how the command STARTTLS in IMAP works exactly and what becomes different when it’s sent. After I’ve sent the command “STARTTLS” before login process and received the response “OK Begin TLS negotiation now” as a client, does anything change for me as a client in the subsequent API commands, that is, … Read more

Which protocol do clients use when communicating with servers in a SAN [closed]

Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Server Fault. Closed 9 years ago. Improve this question I’m trying to wrap my head around how a SAN works and how it is implemented. If I understand this well, clients wanting … Read more