Rene-Sackers

[EventHandler(Events.Client.onClientResourceStart)]
private void onClientResourceStart(string resourceName)
{
	Debug.WriteLine($"{Events.Client.onClientResourceStart}");
}

[EventHandler(Events.Client.onClientResourceStop)]
public void onClientResourceStop(string resourceName)
{
	Debug.WriteLine($"{Events.Client.onClientResourceStop}");

mrpeardotnet

Proxmox PVE Host Config Backup Script

This script can be used to backup essential configuration files from the Proxmox Virtual Enivronment (PVE) host.

The script will create backups using tar with specified backup prefix and date and time stamp in the file name. Script will also delete backups that are older then number of days specified.

Create backup script file

To create backup script that will be executed every day we can create backup script in /etc/cron.daily/ folder. We need to make it writeable by root (creator) only, but readable and executable by everyone:

touch /etc/cron.daily/pvehost-backup

almeidx

Markdown Text 101

Want to inject some flavor into your everyday text chat? You're in luck! Discord uses Markdown, a simple plain text formatting system that'll help you make your sentences stand out. Here's how to do it! Just add a few characters before & after your desired text to change your text! I'll show you some examples...

Sweet Styles

Italics *italics* or _italics_

Underline italics __*underline italics*__

scragly

Learning discord.py

This guide assumes your version of discord.py is updated to at least v1.0 or greater.
You can check your version with pip show discord.py.

Show Contents

• Required Knowledge
• Essential References
• Creating a Discord Bot Account

egernst

The netfilter hooks in the kernel and where they hook in the packet flow

The figure below calls out

• The netfilter hooks
• The order of table traversal

matthewzring

Markdown Text 101

Want to inject some flavor into your everyday text chat? You're in luck! Discord uses Markdown, a simple plain text formatting system that'll help you make your sentences stand out. Here's how to do it! Just add a few characters before & after your desired text to change your text! I'll show you some examples...

What this guide covers:

• Text Formatting
• Organizational Text Formatting
  • Headers
• Subtext

bom-d-van

Detecting and Mitigating DDOS Attacks

#List all Finish (FIN) packets
machine1 : sudo /usr/sbin/tcpdump -Nnn -i any -s0 'tcp[13] & 1 != 0'


#List all SYN and SYN-ACK packets
machine1 : sudo /usr/sbin/tcpdump -Nnn -i any -s0 'tcp[13] & 2 != 0' 

mattia-beta

### 1: Drop invalid packets ###
/sbin/iptables -t mangle -A PREROUTING -m conntrack --ctstate INVALID -j DROP

### 2: Drop TCP packets that are new and are not SYN ###
/sbin/iptables -t mangle -A PREROUTING -p tcp ! --syn -m conntrack --ctstate NEW -j DROP

### 3: Drop SYN packets with suspicious MSS value ###
/sbin/iptables -t mangle -A PREROUTING -p tcp -m conntrack --ctstate NEW -m tcpmss ! --mss 536:65535 -j DROP

### 4: Block packets with bogus TCP flags ###

tuxmartin

syn-flood protection

Limit the number of incoming TCP connections.

iptables -N syn_flood
iptables -A INPUT -p tcp --syn -j syn_flood
iptables -A syn_flood -m limit --limit 1/s --limit-burst 3 -j RETURN
iptables -A syn_flood -j DROP

--limit 1/s: Maximum average matching rate in seconds

tomasinouk

Some examples of SNAT, DNAT with iptables with comments

mainly used in start-up script

How to test 'safely'

When we play with iptables aka firewall we might end up in situation, where we execute rule, which has unforseen impact - lock yourself out. Recovering from this situation is necessity.

How to:

• Enable reboot via SMS.
• Test all commands in shell first before putting them into Start-up script. This way the command will be wiped out, when unit is rebooted.

masquarade all outgoing packets to be WLAN0 IP