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What is BRCM

Recently, a PC device called brcm-lvg has been showing up on my network in the finder sidebar under sharing.

It started showing up around the time that I upgraded to Yosemite, V 10.10.4. This could just be coincidence.

I have no idea what this device is and a Google search returns unhelpful results.  After upgrading to Yosemite, I noticed my Firewall had been turn off. When it's turned off, it says I'm connected to the "brcm-lvg" device as a guess. This device contains one empty folder called "Shared."  How could I possibly be connected to this device if I never connected myself to it?

When I turn the firewall on, the mysterious device says the Connection Failed.  However, I can't remove the device from the sidebar at all.  Even when I press the eject button, it stays there.

What is this "brcm-lvg" device? Is my computer being hacked?

Thank you for your help

Do you have a router with a hard drive connected to it?

I have a Technicolor modem with a built in router that Time Warner Cable recently installed.  It has usb ports, but nothing is attached to them.  The only thing coming out of the modem/router is the coaxial cable and the power adapter.  This device is what's sending the wifi signal to my computer.  It is password protected.

Does this answer your question when you ask whether a hard drive is connected to the router? if it doesn't I will do my best to further elaborate. Thankyou for your help

The router should have an administration page on which it shows all the wireless clients connected to it. Does that page show more clients than you know you have?

Hello,

I was not able to access my Admin page directly but called Time Warner Cable to ask them.  They said that only two devices were connected - my laptop and my phone.  However, the device BRCM-LVG wasn't present in the finder under shared when I called.  I have not seen it show up since I turned on my firewall and disabled all sharing

However, I am still curious as to what this device was, and would like to figure it out in case it reappears again

Hold down the option key and select the Wi-Fi menu in the menu bar. What values is shown for "Security?"

Security: WPA2 Personal

Do you use "Hamachi" or any other VPN service?

Nope - not that I know of

There was apparently an unknown device on your network. Since it's not there now, there really isn't any more I can tell you.

Do you have any ideas as to how this device was able to gain access to my password protected network?  Do you think it could've been a hacker? Or do you think this isn't something I should worry about?

Do you have any ideas as to how this device was able to gain access to my password protected network?

If it wasn't wired to your router, and wasn't on a layer-2 VPN such as Hamachi, then it would have had to get into the Wi-Fi network. If you have a weak network password such as a dictionary word, it could be cracked easily in a few minutes. Changing the password would be a good idea, regardless of how strong it is.

I am just now having exactly the same issue. And it appeared simultaneously on both my and my wife's MacBook Pros.

It also showed up when Time Warner Cable (TWC) "upgraded" my cable modem/router to a Technicolor model TC8715D. This had not occurred anytime previously.

Based on the update to the original post noting the poster's similar "upgrade" to a Technicolor modem/router, I would venture that it is either a 1- feature of that line or 2- TWC is capturing data. Either case makes me very anxious because the main folder is labeled storage; and I have no idea what it intends to "store." Finder's 'Get Info' only shows that folder as a 16KB space with 16KB free (at this time, anyway.)

I have admin access to the modem; but a cursory review of settings did not appear unusual. I do intend to do some additional digging about and locking down.

A correction and some additional information--and possible explanation.

Correction of my original post: 'Get Info' does not provide any information--just goes into permanent "fetching" status; 'Quick Look' identifies the root folder "storage" as a 16KB space with no data.

While I consider it reprehensible that cable companies mount file systems on peoples networks without explanation, this may become more prominent in the future--here is what I've been able to determine.

Time Warner and Arriss-Technicolor have signed on to MoCA (Multimedia over Coax Alliance) and DLNA (Digital Living Network Alliance) both developing protocols for delivering streaming media, VOIP, and Internet of Things. The Gateway modems such as the Technicolor, are taking on more of the work to deliver performance.

It appears that multimedia modem-routers with the Broadcom chipset use internal Linux procedures to operate. Many of the process identifiers are labeled "BRCM[hyphen]<nomen>. I can't absolutely verify this; information does not seem available to the layperson. I have found instances of BRCM-2.4, BRCM-test-SSID, and such.

My modem settings do have MoCA currently "disabled" (but available.) DLNA is "enabled" to "allow sharing of digital media between devices such as computers, laptops...and other multimedia products." Does not detail what those "products" are. Onboard-help also states, "DLNA can be enabled or disabled. When enabled, the gateway acts as a Digital Media Server." Additionally, my Gateway has QoS (Quality of Service) enabled to "...provide better performance for latency sensitive communication such as voice or video, especially during high traffic."

I am confident that this is BRCM-lvg is a Gateway internal multimedia server as mentioned in the onboard-help; but I don't seem to have the "creds" to absolutely verify that.

If apple is monitoring this discussion, I would submit that it would be a service to us to verify this; and provide detail in a Knowledge Base entry. Apple users are generally more discerning about what they allow mounting to the file system; and we have a right to know.

I noticed the SAME THING on my new laptop as I was setting up the network in my NYC apartment yesterday!! the brcm-lvg "data storage" icon. The internet connection is provided by Time Warner Cable, of course, in a building on the UWS. CREEPED ME OUT. Now that I am away from that location -- 100 miles away, in fact -- the icon is still there under "Recent Items," "Servers," then an icon that says "storage" next to it. When I click on it now, it says " The server may not exist or it is unavailable at this time. Check the server name or IP address, check your network connection, and then try again."

So is it just something that anyone who is using a TWC wireless network in their home is going to end up using, like it or not? Like you, I would like to know the whole story behind it.

Thanks.

最後更新：2017-09-08 15:42:13

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