Can Snort inline/blocking mode block traffic from one host to another on internal LAN?

I’m putting Snort on a wifi router. My understanding is when in inline/blocking mode, I have to bridge a LAN interface to the WAN interface for packet inspection. If this is the case, it does not seem possible to detect/block an attack from one host to another host on the same LAN because the traffic will not go out the WAN interface.

Is this correct? If so, is there a configuration that would support detecting / blocking an attack from host to host on the same LAN?

No sound from earbuds(3.5mm jack), internal speakers produce sound.(19.04)

I apologize for the limited scope of the details of my problem. I have used alsamixer to make sure that my earbuds are not muted. Upon insertion, plasma indicator automatically switches volume controller to earbuds and mutes internal speakers. My output tests include Plasma Audio Volume control settings, VLC(which does not appear to recognize my earbuds in device selection), and youtube.

Thanks in advance.

Time Machine backup will not restore to my internal HDD drive

I had a major hard drive failure, so I have replaced the HDD on my MacBook mid 2012 13″ model with another 1TB. I was running latest version of “Mojave” MacOS.

I go to restore from the time machine (TM) backup and I am being told that it will only now restore to an SSD drive because APFS systems can only be restored to SSDs. I wasn’t even aware that my Time Machine was doing backups in APFS.

So I am really stuck here. Is this Apple’s very unsubtle way of telling me to buy a new MacBook with an SSD drive to be able to keep using TM backups and other system features? Like planned obsolescence? Or have I done something wrong? The full message that comes up when I do the CMS + R recovery boot and try to restore from TM:

The system can’t be restored onto this disk because APFS systems can only be restored to internal SSDs. Reinstall MacOS on this disk and then use Migration Assistant to transfer data from your backup instead.

How to disconnect an internal (“fixed”) USB device on Ubuntu 18.04?

When I type lsusb I see a list of connected usb devices. One of them is 0955:7002 – “Nvidia Stereo Controller”, which causes me a lot of problems. I want to remove the device but I really don’t understand how it works- is this a physical device that is connected internally? Is it a virtual device? Its “removable” attribute says “fixed”. Of course, needless to say, there is nothing connected to the external USB ports.

I work on a laptop with Nvidia GPU installed (I don’t think it has to do with my problem), and I have dual boot: Ubuntu 18.04 and Windows 7. On the windows side I can find the aforementioned device on the device manager and I can also disable it but I guess it is irrelevant to what happens on the Ubuntu side… (I tried “disable” just in case, with no success, and I don’t want to risk uninstalling)

Any information, even to understand the situation better (in the comments pls), will help.

share vpn connection ( over internal wi-fi ) to usb wi-fi adapter ( set up as access point )

Ok, now it may be a little confusing..

I’m connecting to WiFi via my MacBook’s internal WiFi adapter. Then connect to my VPN..

I want to share this VPN connection over USB WiFi adapter ( I’m using Archer T2U )

  • First of all I couldn’t able to configure Archer T2U as Access Point at all.. The software driver doesn’t have an option like that. Though I did set it up as AP on Windows.

  • I could connect to WiFi via USB WiFi adapter. Then when I connect to VPN, it’s also connected. But when I try to share the VPN connection through internal WiFi, it’s not working. VPN drops connection and because VPN is dropped WiFi couldn’t find anything to share.

Is there any way to set up USB WiFi adapter as access point other than its’ software ( via command line or anything ).

Why does VPN connection drops when I try to share it over internal WiFi? It would work if the connection stays I think.

Internal microphone is not detected in ubuntu

I bought new laptop and install Ubuntu. In windows 10 microphone normally working, but not in Ubuntu.

I was searching for solution on forum, install pavucontrol and try left front microphone turn on 0, but nothing happens. Problem is, that in “input devices” I can find only analog input, not the microphone. THere are information about my alsa http://alsa-project.org/db/?f=0555ec30d7f888be63558f9558521d41c5afb35c.

Thank you for any help and tips.

Internal microphone is not detected in ubuntu

I bought new laptop and install Ubuntu. In windows 10 microphone normally working, but not in Ubuntu.

I was searching for solution on forum, install pavucontrol and try left front microphone turn on 0, but nothing happens. Problem is, that in “input devices” I can find only analog input, not the microphone. THere are information about my alsa http://alsa-project.org/db/?f=0555ec30d7f888be63558f9558521d41c5afb35c.

Thank you for any help and tips.

Correct HttpMethod to reset internal data

I am currently building a web api. The authentication is based on keys which are set in the database.

However, these keys could be changed someday, e.g. when a user should be banned from the system. Currently the data is read once on startup of the server/application.

My question is, how I can reset this data without the need to restart the application?

The data itself is a private backing-field which is only initialized when not set (as on startup). I now want to reset the data by just setting the data to null which will reload it from the database on the next call/access.

What would be the correct method in terms of REST?

As far as I have understood, none of the methods are “correct” as I don’t create, update or delete a resource.

For me DELETE would be the choice as I delete the internal data.

Any thoughts?

Reference request about “internal language of categories”

I’ve tried to become familiar with the so-called “internal language of a category” for the last months. However, I’m still not confident enough when, for instance, I find a subobject (of a given object) which is defined through a formula of the internal laguage of the category that I’m considering.

In detail, if C is a pretopos, A is an object of C and ϕ is a formula in the internal language of C, I’m not completely able to understand the following two things:

1) Which the actual subobject B of A, represented by the expression {x∈A:ϕ(x)}, is. Meaning, how I can recover B in terms of “categorical operations” in C.

2) How I can work with {x∈A:ϕ(x)}. That is, for instance, how I can verify through a completely syntactical procedure that {x∈A:ϕ(x)} is the object that I was looking for.

Of course, I’m not asking you to answer points (1) and (2), as they are too generic. I would rather you to suggest me a self-contained chapter of a book or some lecture notes where this subject is fully explained. In my opinion, what I in particular need is a collection of basic examples and exercises regarding its usage.

Thanks in advance.

P.S. I asked the same question in Math Stack Exchange (https://math.stackexchange.com/questions/3262479/reference-request-about-internal-language-of-categories).