Cloud Router Switch (CRS) is a high-performance Smart Switch Series device from Mikrotik that has many ethernet ports (up to 24 ports). This CRS device is a Multilayer Switch, which in addition to work on layer 2, can also work on layer 3 switches and unique OS that is used also RouterOS so that all features on RouterOS can also be applied in this device.
Key Features of Cloud Router Switch
SSTP (Secure Socket Tunneling Protocol) is a form of VPN (Virtual Private Network) that uses TLS 1.0 channel and runs on TCP port 443 (SSL) protocol. In order to use SSTP with optimal security, we must add an SSL certificate for connection between Server and Client. This makes SSTP VPN more secure (secure) than PPTP VPN.
But if Server and Client both use Mikrotik RouterOS version 5.0beta and above, then do not use SSL certificate can already. Use of this SSL certificate is required for connection to non-Mikrotik clients, for example using PC / Laptop Windows OS.
Virtual Private Network (VPN) is a technology that we can use to access private network (local) through the public network (internet). This VPN is very useful to access a private office network from anywhere as long as we have an internet connection. For more details please see the following PPTP illustration (Point-to-Point Tunneling Protocol) VPN:
I have an analogy that there is a branch office that needs to connect to the headquarters but the branch office has no direct connection to the central office intranet. There is the only internet connection, while employees in branch offices that need intranet access is quite a lot, and his VPN account there is only one.
Mikrotik with the existing line can back up with 3g/4g modem, or any problems with that at present isp connection between the processor system status, etc. can provide something been lost in the notifying you via SMS.
You can see 3g / 4g modem and 3g / 4g MiniPCI card list supported by your router.
<http://wiki.mikrotik.com/wiki/Supported_Hardware#3G_cards_and_modems>
<https://wiki.mikrotik.com/wiki/Supported_Hardware#4G_LTE_cards_and_modems>
Now, we’re looking at a 3g / 4g modem to the USB port on the Mikrotik, to check the USB port and see if it recognized the modem.
Tutorial Share Internet Connection USB Modem with Mikrotik – Several types of new Mikrotik already supports USB port that can be used for various things. USB ports like in PC devices can be used for additional storage media such as USB flash. It can also function as an interface to connect the 3G / EVDO modem. So make Mikrotik devices more flexible in installation, especially in locations that have not reached the internet connection that usually uses wired or wireless.