Docker फ़ायरवॉल सेटअप

# Ultimate Firewall Needed
apt-get update && apt-get install -y ufw nmap curl

# Get your IP Addresses, simple output:
hostname --all-ip-addresses

# या ip टूल का उपयोग करें, उदाहरण:
ip addr

ufw logging on # on=low - medium might be better for diagnostics
ufw logging medium
# First, block all the things
ufw default deny incoming

# REQUIRED: CHOOSE *ONE* OF THE FOLLOWING DEFAULT OUTBOUND RULES:
ufw default deny outgoing
ufw default allow outgoing

# Allow and log all new ssh connections,
ufw allow log proto tcp from any to any port 22
## Allow http traffic (w/o explicit logging)
ufw allow out on docker0 53/udp to 172.17.0.1/16
ufw allow out on eth0 to any port 53
ufw allow out on eth0 from 0.0.0.0/0 to any port 80 proto tcp
ufw allow out on eth0 from 0.0.0.0/0 to any port 443 proto tcp

# Verbose: ufw allow proto tcp from any to any port 80
ufw allow 80/tcp
ufw allow 443/tcp
ufw allow log 22/tcp
ufw limit ssh # Basic Rate limit 4 SSH brute force mitigation

# अपना बाहरी IP सेट करें
export EXTERNAL_IP=123.123.123.123
# ज़रूरत पड़ने पर Docker IP अपडेट करें
export DOCKER_IP=172.17.42.1
# Dockerized ऐप के लिए tcp 8080 ट्रैफ़िक फ़ॉरवर्ड करें
ufw allow proto tcp from $EXTERNAL_IP port 8080 to $DOCKER_IP port 3000

ufw --force enable

ufw reset

# Verify dependency
apt-get update && apt-get install -y nmap

# Set scan target
export TARGET_HOST=123.123.123.123

# Example Scan Commands:
# Fast open port check
nmap -p 1-10240,27017 -T5 $TARGET_HOST
# Thorough scan
nmap -p 1-10240,27017 --open -v -APN $TARGET_HOST
# Svc Inspection
nmap -p 1-10240,27017 -O --osscan-guess $TARGET_HOST