Which secure chat server to choose?

Question

linux

Hello, the company (2 offices in different cities) needed its own chat server for internal communication and sending files using PC, Android and IOS. What would you recommend is the main thing that would be safe, since files (mainly accounting) and messages will be transferred through its means, so that it is possible not only in LAN but also via the Internet for phones and that the chat server is on a corporate server and as little as possible would it be client side settings all server side encryption?

Answer 1

raise your jabber corny on a VPS or your physical server

Answer 2

letstalk up for https.
From mobile phones, you can use any jabber client to target (thousands of them).

Answer 3

4talk
hipchat
slack
can be installed on their server

Answer 4

The chat server itself is not difficult to raise. In here, to ensure security, this is already a difficulty. You must connect 2 offices into one network through a crypto tunnel (atlix, vipnet coordinator). The server itself will be inside the grid behind the crypto routers. Do not let him on the Internet. Users of mobile applications can, in theory, organize access through a vipnet clienta or some kind of vpn solution licensed by the FSB.

Answer 5

Open source Slack-alternative reaches 1.0: Self-ho...