Levisallanon

Hey everyone!
 
I'm trying to pull more from my FreeNAS Box to maximize performance. My development box which also hosts my FreeNAS install is running 2 Xeons, 144GB Ram, 256GB NVME L2arc, 3*3TB Z1
 
My client device is a 2014 MacBook Pro retina 15 inch with DGPU. It has 2 thunderbolt 2 ports and 2 usb3.0 gen 1 ports. 
 
Since Thunderbolt 2 gear is wicked expensive, I was thinking of using the USB ports for networking, and with the advent of 802.3BZ adding support for 5Gb/s and 2.5Gb/s being able to hit 5gbit on my laptop. 
 
My thinking is I could connect the server via SFP+ to the crs305 (a 4 port SFP+, 1 gigabit rj45  switch ), use an RJ45->SFP+ converter to connect to my current cat6A cabling, then terminate at the laptop with a 5G Ethernet to USB3.0 adaptor. 
 
I was wondering if anyone was aware if the CRS 30X (in my case I'm looking at the 305) supports the 802.3bz specification for 5G and 2.5G. Otherwise, if the adaptor supports auto negotiation with the usb to ethernet adaptor, do I have to care about the switch supporting it? Would it essentially just see the other device as a slow 10G device? 
 
More than happy to provide clarification, other data 
 
Felix CLC
 
 

Recently run a cat 6 cable (60m) from modem to a switch, from the switch ive run a 10m cable, all with fj45 connectors. It connected for an hour then disconnected and is no longer being detected, tested with cable tester and the cables are in full working order but i have no connection. All the colours are matching, even had a technician check it all out and he doesnt know what the issue is. tested out switch and its not faulty he said possibly shorten the cable down ( 2m slack each end) to see if that helps. Unsure as to a method to fix! Lastly  on the modem side the port is no longer lit and all the ports are functional as ive tested them all!

Yes the main router(router 1) has a port labelled wan. Also I got the answer I was looking for from u so THANKS . In future If u need some help I will definitely try to provide u what ever i can under my power.

Alright,
A few days ago when I got home my internet stopped working, so, I did the standard reseting your router. No luck. So I trying to unplug and plug back in everything. Still nothing. So I called my ISP stating my issue and I got in contact with tech support.
After a bit of troubleshooting, we figured out that he could ping my modem, but if I directly bypassed my router by plugging my pc into the modem. I bought a new modem and waited a few days for it to arrive. Yesterday it came in the mail, so I installed it and called my isp to help activate it. After that was done he asked me to see if it worked, it didn't. So he to me to call Netgear (the manufacturer of the modem). She told me that the modem was plug and play and didn't need any configuration besides that of my ISP.  After that I just gave up and went to bed.
Has anyone here had a similar problem or have any idea how to fix it?
Thanks.

CCNA also goes into tunneling so you would need multiple routers for this too.
From what I remember from the ICND 2 exam there where a lot of labs where they had 2 offices with both a router and a serial link or something else between them where there was an tunnel.

You can start here I guess  :
 

Depending on the cable you could even get gigabit. It would need to have 8 conductors and twisted pairs. I have a 8 core telephone cable in the wall and it works for gigabit from the basement to upstairs.

If you can find the other side of the phone cable and it's close to where your router is you could use this cable. You have a Max of 100 mbit but it should be enough and stable. You need to make your own wire probably twice. Here is his to do it:
https://youtu.be/Bx98ACGSSZs

So just messing around a little this morning, I re-shared my laptop's desktop file and my desktop computer showed up on my laptop. I can now access my desktop shared files from my laptop.
 
In addition to that, I checked my desktop computer to see if my laptop's shared files showed up there...... AND THEY DID! Including the other shared files unrelated to the desktop file.
 
So the only thing I can thing of is something may have either glitched, or more likely an update to either computer caused the sharing to fail. Therefore when I re-shared the laptop's desktop file, it put everything the way it should be. Weird but IT WORKS!

I am confused with what you are saying,
 
Registry is simple:
 
I don't feel like typing a novel, so I'll stay brief, and let you read more on it, if you are truly interested:
The registry is a database. Very important that you understand that. Keys, are viewed as"folders" in the registry editor for easier editing. HKEY_CLASSES_ROOT, contains everything related to file associations that affects all accounts on the system (default icons, which program to open HKEY_CURRENT_USER, contains everything that is related to the current user. In there you'll have Windows account settings (keyboard, language, environmental variable, personification, program settings, group policies, account restrictions and file association that affects the account (which overrides the global ones). The location of the registry for each account is located in: C:\Users\<account>\NTUSER.DAT. This file is: HKEY_CURRENT_USER that you see under the registry editor 'regedit" that it loads by default. HKEY_LOCAL_MACHINE, contains everything that affects system wide configurations. Drivers, drivers configuration, system files registrations, programs settings that affects all users, hardware, and has things like: has a place where Windows writes the current hardware configurations for programs to easily use to make life easier for developers. So for example, you develop a software, for debugging purposes, you have a log system in the case of a crash, and you need to know the CPU model. Well you could spend a very long time, and hire experts to build a system that communicates with the hardware, just to get the CPU model (like what HWMonitor and others does), or you could write this massive code file to interact with WMI in Windows to get that information, or in a "1 liner" just pull the CPU model stored in: "Computer\HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0" HKEY_USERS. Shortcuts of 2x keys under HKEY_CURRENT_USER that are actively loaded in one location. HKEY_CURRENT_CONFIG. Shortcut of a key under HKEY_LOCAL_MACHINE. And that is pretty much it. There is a learning curve, and you need to know what you are doing, but essentially the registry is not particularly complicated if you understand how Windows works.
 

https://docs.microsoft.com/en-us/windows-server/identity/ad-ds/plan/security-best-practices/best-practices-for-securing-active-directory

Have fun reading ;).

You mean like a wifi router? That sounds good indeed, gotta get me one of those !!!

Are you looking for a monitoring tool or a mapping tool? By your description I can't figure out which one you want.

On a funny note, I'd send pictures of Nicolas Cage memes to everyone's fax

It probably is. IMO the forums need a Cyber Security section but I can already predict it'd be full of "how do hack the facebooks?" threads

You might want to look into TheThingsNetwork which runs on LoRa.
I think this article explains some of it
https://www.thingforward.io/techblog/2017-09-27-getting-started-with-lorawan-thethingsnetwork-and-platformio.html

Windows update does this already by default but you can set the caching capabilities even more. Look at this tutorial:
https://www.pcworld.com/article/2955491/windows/how-to-stop-windows-10-from-using-your-pcs-bandwidth-to-update-strangers-systems.html

They should really consider if this is safe at all because fax is unencrypted in the first place. A wire tab would show the contents of the fax.
In theory the first approach they showed could be used but you might notice it because the fax would be receiving for almost 30 minutes. But if the fax is also on outside business hours they might be able to access it. if it indeed stores older messages in the memory they would be able to extract that.
A fax needs to be on the phoneline to receive messages and they access it by the fax protocol itself, so it would still be vulnerable. You need to have a fax with updated firmware to prevent this attack.

If you implement RFC1149 well it shouldn't right?
 
That's just considered package loss :).

If you implement RFC1149 well it shouldn't right?
 
That's just considered package loss :).

source: https://www.tomsguide.com/us/hp-printer-fax-hacks-defcon26,news-27795.html

Last sunday at Defcon 26 some researchers revealed you can hack fax machines now. and it's not just any old fax machine.

Most HP all in ones seem to be affected by it.

The fax protocol is pretty old already and hasn't really been changed. So almost every all in one which has been released since ever will use the same implementation. But:

So by just having a all in one printer with faxing capabilities they can target you by your fax number and enter your network.
If you have an HP all in one please check this message to see if yours is affected:
https://support.hp.com/us-en/document/c06097712
And make sure you update the firmware. And please also check your grandparents because they are most likely to still use fax and not being able to update the firmware of their device.


But we where lucky because Fax is pretty old, so the vulnarabilities in SOAP weren't that bad for use as they explain here:



But fax also supports color transmition. And while the black and white transmission uses the TIFF image format the color transmission uses the JPEF format.
Jpeg needs decompression and in this decompression they where able to implement the SOAP vulnarability too.

If you think about it, that old horror movie trope is basically just a DDOS attack!

Absolutely killed me there:
 
 

If you implement RFC1149 well it shouldn't right?
 
That's just considered package loss :).

If you implement RFC1149 well it shouldn't right?
 
That's just considered package loss :).