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Forward Proxy
- Acts as an intermediary for clients, handling requests from clients to servers.
- Controls and filters access, enhancing security.
- Provides anonymity by masking user IP addresses.
- Improves speed through caching frequently accessed content.
- Optimizes bandwidth via caching and compression.
- Logs client activities for security monitoring.
Reverse Proxy
- Acts as an intermediary for servers, forwarding client requests to backend servers.
- Distributes traffic using load balancing.
- Handles SSL termination to reduce server load.
- Enforces authentication and secures backend systems.
- Accelerates web performance via caching and compression.
- Protects against threats like SQL injection and XSS attacks.
You Should Know:
Forward Proxy Setup (Squid Proxy – Linux)
1. Install Squid Proxy:
sudo apt update && sudo apt install squid -y
2. Configure Squid:
sudo nano /etc/squid/squid.conf
Add ACL rules to restrict access:
acl allowed_ips src 192.168.1.0/24 http_access allow allowed_ips
3. Restart Squid:
sudo systemctl restart squid
Reverse Proxy Setup (Nginx – Linux)
1. Install Nginx:
sudo apt update && sudo apt install nginx -y
2. Configure Reverse Proxy:
sudo nano /etc/nginx/sites-available/reverse_proxy
Add:
server {
listen 80;
server_name example.com;
location / {
proxy_pass http://backend_server_ip:8080;
proxy_set_header Host $host;
}
}
3. Enable & Restart Nginx:
sudo ln -s /etc/nginx/sites-available/reverse_proxy /etc/nginx/sites-enabled/ sudo systemctl restart nginx
Windows Reverse Proxy (via IIS ARR)
- Install Application Request Routing (ARR) via IIS Manager.
- Configure URL Rewrite to forward requests to backend servers.
Security Hardening (Linux)
- Block Direct Access to Backend:
sudo iptables -A INPUT -p tcp --dport 8080 -j DROP
- Enable HTTPS with Let’s Encrypt:
sudo apt install certbot python3-certbot-nginx sudo certbot --nginx -d example.com
What Undercode Say:
Proxies are critical for security, performance, and scalability. A forward proxy protects clients, while a reverse proxy shields servers. Always:
– Log traffic (tail -f /var/log/squid/access.log).
– Monitor performance (nginx -t for config checks).
– Use fail2ban to block brute-force attacks.
– Automate SSL renewal (crontab -e + 0 3 certbot renew).
For advanced users, explore:
- HAProxy for high-availability load balancing.
- Traefik for cloud-native reverse proxying.
- SOCKS5 proxies for tunneling (
ssh -D 8080 user@proxy_server).
Expected Output:
A fully configured proxy (forward/reverse) with logging, SSL, and firewall rules.
Relevant URLs:
References:
Reported By: Satya619 %F0%9D%91%AD%F0%9D%92%90%F0%9D%92%93%F0%9D%92%98%F0%9D%92%82%F0%9D%92%93%F0%9D%92%85 – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
