Enable copr repo.
sudo dnf copr enable tcg/discord
Install discord.
sudo dnf install discord -y
Launch Discord and sign in.
How To install Discord on Fedora
Reply
Tag Archives: linux
Modifying DNS Entry for Domain
Search /etc/named.conf to find the zone file for the domain.
Find the domain name and see where the zone file is. Example zone block.
zone "incredigeek.com" in {
type master;
file "/var/named/mzones/incredigeek.com.hosts";
allow-query { any; };
forwarders {};
};
The file is /var/named/mzones/incredigeek.com.hosts
Edit your zone file by opening it up in a text editor.
Example. Text in bold added for comments.
$TTL 21600 $ORIGIN com. incredigeek IN SOA dns1.dns-server.com. dns2.dns-server.com.( 0000147 ; serial <- This needs to be incremented so it is greater than the previous version of this file 43200 ; refresh (12 hours) 7200 ; retry (2 hours) 604800 ; expire (7 days) 21600 ) ; minimum NS dns1.dns-server.com. NS dns2.dns-server.com. 300 A 10.0.0.11 <- A record for root domain $ORIGIN incredigeek.com. localhost IN A 127.0.0.1 www 300 IN A 10.0.0.11 <- www subdomain A record login 300 IN A 10.0.0.12 <- another subdomain A record
Save file and reload Bind
On FreeBSD
rndc reload incredigeek.com
you can reload everything with
rndc reload
On Fedora/CentOS/REHL
service named reload
On Ubuntu/Debian
service bind9 restart
You may need to reload Bind on any slave servers
How to install Broadcom WiFi drivers in Fedora 27
Install RPM Fusion
sudo dnf install https://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm https://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm
Install packages
sudo dnf install -y kernel-devel-$(uname -r) sudo dnf install -y akmodssudo dnf install -y broadcom-wl
Give the computer a reboot and the Broadcom card should now work.
Install Hashcat Utils
Hashcat on Kali Linux
Here is a quick way to download and install the Hashcat utils.
Download the Hashcat utils
wget https://github.com/hashcat/hashcat-utils/archive/master.zip
Run the following commands to unzip and make the binaries
unzip master.zip cd hashcat-utils-master/src make
You can now convert an aircrack file by invoking the cap2hccapx binary
./cap2hccapx.bin /path/to/aircrack.cap /path/for/output
Check out the following article for more details on converting Aircrack files to Hashcat hccapx
Need to install Hashcat on Fedora?
How to convert an Aircrack capture file to a Hashcat hccapx
Using Aircrack
aircrack-ng input.cap -J hashcat_output
Unfortunately the above command doesn’t seem to work anymore.
If you try to run Hashcat with the outputted file you’ll get an error.
hashcat_output.hccap: Old hccap format detected! You need to update: https://hashcat.net/q/hccapx
Using Hashcat utils
Refer to this guide for installing the Hashcat utils.
Basic syntax is
./cap2hccapx.bin input.cap output.hccapx
Example
~/Downloads/hashcat-utils-master/src/cap2hccapx.bin aircrack-01.cap aircrack.hccapx
Allow KDE Connect through firewall
Firewalld
sudo firewall-cmd --zone=public --permanent --add-port=1714-1764/tcp sudo firewall-cmd --zone=public --permanent --add-port=1714-1764/udp sudo systemctl restart firewalld.service
UFW firewall
sudo ufw allow 1714:1764/udp sudo ufw allow 1714:1764/tcp sudo ufw reload
More information https://community.kde.org/KDEConnect
Increase Disk Size of Linux VM in VMware
This is for extending a regular Ubuntu Linux partition, if you need to resize, expand a LVM partition refer to this guide. I am using Gparted as I ran into some issues using parted for moving the partitions around.
Shut the VM down,
sudo shutdown -h now
It is a good idea to take a snapshot of the VM before resizing the disk, so if you run into an issue you have something to revert back to. In the vSphere Client, right click on the VM -> Snapshot -> Take Snapshot.
Change VM Disk size by right clicking on the VM and going to Edit Settings
You can now boot up the VM. Fire up GParted and it should show some unallocated space at the end of your drive.
Now in the next two images we are moving the Extended partition, which contains the Swap Partition to the end of the drive, so the unallocated space is adjacent to our root partition.
- Turn off the swap space by right clicking on the swap partition and hit Swapoff.
- Right click on the extended partition and extend to the the end of the Drive
- Right click on linux-swap and move to the end of drive.
- You should now have something similar to this
Hit Apply and write the changes to the disk then
- Right click on the extended partition and shrink to the end
- Right click on /dev/sda1 “Root partition” and extend to extended partition.
It should now look like this
Hit apply, then right click on the linux-swap and turn Swapon.
Enjoy the extra space.
Parted resizing notes
Launch parted with the following command. Specify the disk you want to modify. In this case /dev/sda.
sudo parted /dev/sda
Print partition and available free space. If you just run print, it will not show you the available free space.
(parted) print free
You can resize, or rather extend a partition using the “resizepart” command inside parted. Command syntax is as follows
(parted) resizepart PartitionNumber End
Example: Resize partition 1 to 30GB. Note you’ll need to specify the end part with the GB, otherwise, you’ll be shrinking the partition or making a mess… You can see what space is available with the “print free” command above
(parted) resizepart 1 30GB
After you have run the resizepart in parted, you’ll need to grow the filesystem, so run one of the following commands from the local shell.
resize2fs /dev/sda1
Or for XFS partitions
xfs_growfs /dev/sda1
You can check the partition size with
df -h
or
sudo fdisk -l /dev/sda
Setup Secure FTP server on CentOS
Setup SFTP Server
When finished you’ll have a SFTP server setup that is configured so the users are in a chroot environment, and can not ssh, or telnet to the server.
Install SSH server if it is not already
yum install openssh-server openssh-client
Create group that is limited to sftp so they can’t ssh, scp etc.
groupadd sftpusers
Add chroot settings to /etc/ssh/sshd_config. The %u is a variable, which is the users username.
Match Group sftpusers ChrootDirectory /sftp/%u ForceCommand internal-sftp
Make ftp directory
mkdir /sftp
Add SFTP user
useradd -g sftpusers -d /sftp -s /sbin/nologin newsftpuser
Create password for new user
passwd newsftpuser
Create directory for user
mkdir /sftp/newsftpuser
Create directory to put ftp files
mkdir /sftp/newsftpuser/files
Change permissions
chown newsftpuser:sftpusers /sftp/newsftpuser/files/
Restart sshd
systemctl restart sshd
Should be good to go. Test it by logging in with your favorite FTP client.
Add Self Signed SSL certificate to LibreNMS in CentOS
Install mod_ssl
yum install mod_ssl -y
Create Directory for SSL key.
mkdir /etc/ssl/key chmod 700 /etc/ssl/key
Create certificate.
openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/pki/tls/private/localhost.key -out /etc/pki/tls/certs/localhost.crt
Fill out the info or what is applicable.
Now edit the LibreNMS Apache config file /etc/httpd/conf.d/librenms.conf
All you have to do is add the following three lines under the VirtualHost and change *:80 to *:443.
SSLEngine on SSLCertificateFile /etc/pki/tls/certs/localhost.crt SSL CertificateKeyFile /etc/pki/tls/private/localhost.key
So when your finished the file should look like this.
<VirtualHost *:443> DocumentRoot /opt/librenms/html/ ServerName server_hostname_or_IP SSLEngine on SSLCertificateFile /etc/pki/tls/certs/localhost.crt SSLCertificateKeyFile /etc/pki/tls/private/localhost.key CustomLog /opt/librenms/logs/access_log combined ErrorLog /opt/librenms/logs/error_log AllowEncodedSlashes NoDecode <Directory "/opt/librenms/html/"> Require all granted AllowOverride All Options FollowSymLinks MultiViews </Directory> </VirtualHost>
Don’t forget to allow https/port 443 traffic through the firewall. Guide here
If you have any issues, you may need to chmod the key and crt file.
chmod 644 /etc/pki/tls/certs/localhost.crt chmod 644 /etc/pki/tls/private/localhost.key
You should now be able to access LibreNMS using https. Note, you’ll need to allow an exception in your browser for your self signed certificate.
https://LibreNMS_IP_Address