I have an existing SSH key (public and private), that was created with ssh-keygen. How can I add a comment to this existing key?
We devoloping a community based site with Django. Since we want to do a rapid developement process we want to be able to do (multiple) daily updates of the live site.
Before we roll out an update we want to test it using real world data. For this we need a second, semi-live site, which runs basically in the same environment and has access to the real data but cannot take down the live site.
How to accomplish such a deployment? Has anyone experience with this and can point to some often made mistakes?
I have got the following question from a course:
"Assume a TCP connection over the internet with a useable bandwith of 300Mbps. Assume that some packets are transported with a very high delay. At which delay time serious problems may occure? Is this a realistic problem?"
I calculated that at a delay time of ~2 minutes, there will be an overflow within the sequence counter (if you assumed that it started with 0). According to RFC the sequence counter will overflow to zero. I found no "what to to if this happens" within the RFC, but maybe i overlooked it.
My question is: What will happen? Is this simply a limitation of TCP? Are there workarounds (except of using a larger sequence counter)?
This is not for me personally but for everyone searching this in a search engine, so this is a community wiki question.
This question is based on this answer in which he stands that Mozilla Thunderbird is a alternative for Outlook. While Thunderbird is great for SoHo I simply disagree that it's an alternative to Outlook at company level.
In fact I would say that there is no good open source alternative for Microsoft Outlook (+Exchange) which can be used to entirely replace Outlook company wide.
I would like to hear your opinions on the following questions:
- Is there such an open source PIM suite (+server) which can compete with Outlook (I can even be web-based, as long as it's hosted internally, so no Google Mail/etc.)?
- If there is one: Have you personal experience with using and/or migration? What are key points?
- If not, why is this missing?