shakibamoshiri

How to tunnel SSH over SSL/TLS

laptop ssh -> laptop stunnel -> evil network -> internet -> your server -> your server ssh

Server (your shell server/home box/work box/whatever)

Sets up a stunnel process listening externally on port 2443/tcp, forwards to localhost 22/tcp

• Install stunnel, e.g. yum install stunnel
• Install server config snippet to /etc/stunnel/stunnel.conf

shakibamoshiri

#!/bin/bash
# A script to limit the outgoing bandwidth of the consensus and execution layers by port
# We do this because the highest cost for running a node in AWS is the outgoing bandwidth

# Define your ports and their corresponding rate limits
declare -A ports=([30303]="500kbit" [9000]="1mbit")

# Define arbitrary class IDs for each port
declare -A class_ids=([30303]=1 [9000]=2)

shakibamoshiri

Install FIO on Ubuntu/Debian:

sudo apt update
sudo apt install -y fio lshw

Install FIO on Fedora: