We are using the Huawei B593S-601 LTE Router at work.
Currently there are no real security/firewall restrictions on outgoing stuff, so employees are having a field day with Facebook, Youtube etc.
I want to restrict access to these (and other) sites, but allow access to everything for certain MAC IDs - fairly straightforward Firewalling, but I don't see a way of doing that on this router.
Could someone please tell me if I'm wrong on this, and how to go about doing so?
The B593 is an all-in-one device containing a modem, router, firewall, 4-port switch and Wireless Access Point WAP). The performance of the LTE modem is excellent, but as with all such "combo" devices, the functionality of the other add-on bits is basic at best. That is certainly true of the B593's router/firewall subsystems - they provide only the most basic functionality. Most folks with more "serious" network requirements will rapidly find they need a "proper" router downstream of the B593 to do the heavy lifting.
With that said, you can configure some (very) basic rules in the B593 as follows :
- Go to Security / Firewall level and set the level to at least Medium or High (or custom). This enables URL and IP filtering.
- Under Security / URL FIltering, enter the URL strings for the sites you want to block access to (eg www.facebook.com)
My understanding is that this filtering only works at the DNS level, ie when a LAN client requests DNS resolution of a URL that's "banned" in the blacklist, that DNS request will be blocked, preventing access.
This will fail if the LAN client specifies the site's IP address directly, or if the actual IP address has been previously resolved and cached somewhere. However it could complicate navigation within a site to such an extent that it serves as an adequate deterrent.
You could go one step further and blacklist specific destination IP addresses (under Security / IP Filtering), but with big sites mirrored at multiple locations, this could get complicated.
As regards the "supervisor" machines, you could experiment with additional MAC filtering to see if entering a MAC Whitelist will override any blocking performed at the URL and IP level. However I suspect you will very rapidly find yourself spending a large part of your life managing URLs, IPs and MAC addresses!
This is indeed "fairly straightforward firewalling", but the B593 provides only basic tools to implement it.
I don't run through a server so don't have the option of software based firewalling, and we don't use a different router - everything runs through the Huawei. Help?
Particularly for a small business, you probably want to look at getting a more capable router/gateway/firewall device to provide more sophisticated router functionality and URL filtering.
As a start, you could look at hardware-based solutions (security "Gateways"). You could also look at software solutions like pfsense and MikroTik's
RouterOS. The latter can run either as a software solution on a dedicated PC, or on a pre-configured hardware device. They can also provide a lot of additional benefits in the form of traffic statistics, bandwidth limiting, user accounting etc.
At the upper end of the scale, traditional firewall/routers and "network security appliances" from the likes of Netgear might fit the bill. Many of these use an online service to keep abreast of security threats and changing profiles for "banned" sites, eg translating the instruction "
prevent access to Facebook, YouTube and known adult sites" into a host of different rules, much more effectively than you can.