Linux
Hits: 3194

**This doesn't setup any email notifications.

**My own server setup, customization and settings

Install

sudo dnf install fail2ban ipset

Files and Modifications

/etc/fail2ban/fail2ban.conf

dbpurgeage = 1209600

/etc/fail2ban/jail.conf

# "bantime" is the number of seconds that a host is banned.
#banned one week
bantime  = 604800

# A host is banned if it has generated "maxretry" during the last "findtime"
# seconds.
#if they tried in the last 24 hours
findtime  = 88800

# "maxretry" is the number of failures before a host get banned.
#basically, one login chance!
maxretry = 3

/etc/fail2ban/jail.d/local.conf

[DEFAULT]
#one week, be sure to update the fail2ban.conf file with the appropriate dbpurge time
bantime = 604800
banaction = firewallcmd-ipset
backend = systemd
action = %(action_)s

[sshd]
enabled = true

Then restart the service and check status that it's running.

Tools

How to see the status of the SSH jail:

fail2ban-client status sshd

How to unban an ip:

fail2ban-client set sshd unbanip 8.8.8.8
Linux
Hits: 3332

Fedora 22 won't let me install the old nxserver 3.5 and other rpms. So back to FreeNX for now.

  • sudo yum install freenx nxagent
  • sudo /usr/libexec/nx/nxsetup --install --setup-nomachine-key
Then you can use this in /etc/nxserver/node.conf
CommandStartGnome = "/bin/dbus-launch --exit-with-session mate-session"

Linux
Hits: 2997

To create a script that will run a linux command without a bunch of errors on your command line (especially using graphics)

The downside of this is that real actual errors (as in your program keeps crashing) wont show up either.

For example In file /usr/bin/eclipse


/opt/eclipseluna/eclipse 1>/dev/null 2>/dev/null &
disown -a

Linux
Hits: 2836

For .. well I guess years now, I've fought this setup. And what is crazy is that the main article I follow has always gotten me 99% of the way there.

http://wiki.xen.org/wiki/Fedora_Host_Installation

But at some point the virt-manager stopped working and I started using either older host versions (think Fedora 18 was the last easy version, and Fedora 20 I got it working somehow)

Anyway, the salient thing is that after following those install instructions above, that if you enable and start the libvirtd services (for some reason the install doesn't enable them) then virt-manager will start up.

systemctl enable libvirtd.service
systemctl enable libvirt-guests.service

and then the starts too.

Hopefully this holds true for a few more years.

Also, for grub2 boot not seeming to get set, found this gem:

(This) method fails to work on some F20 systems and later due to a missing or improperly linked /boot/grub2/grubenv file. The /boot/grub2/grubenv is symbolic linked to /boot/efi/EFI/fedora/grubenv but /boot is not mounted at the time of booting. So grub2 does not have access to the environment variables. To fix this, change /boot/grub2/grubenv to point to ../efi/EFI/fedora/grubenv instead and your chosen default OS will boot without any problems.

Linux
Hits: 3034

Lots of articles out there toting about it. Performance seems fairly solid for simple operations. Will try something complex this weekend, use Eclipse to open a project up or something with it connected over VPN.

On CentOS or Fedora

(assuming sshd is already installed..)

sudo yum install sshfs

Use it by (in your home dir)

mkdir remote

sshfs computername: remote

e.g.

sshfs picard: remote

To disconnect

fusermount -u remote

  1. NXClient LXDE and XFCE
© 2017 Chad Jorgenson. All Rights Reserved.