Files
llmx/llmx-cli/scripts/init_firewall.sh
Sebastian Krüger f237fe560d Phase 1: Repository & Infrastructure Setup
- Renamed directories: codex-rs -> llmx-rs, codex-cli -> llmx-cli
- Updated package.json files:
  - Root: llmx-monorepo
  - CLI: @llmx/llmx
  - SDK: @llmx/llmx-sdk
- Updated pnpm workspace configuration
- Renamed binary: codex.js -> llmx.js
- Updated environment variables: CODEX_* -> LLMX_*
- Changed repository URLs to valknar/llmx

🤖 Generated with Claude Code
2025-11-11 14:01:52 +01:00

116 lines
3.8 KiB
Bash

#!/bin/bash
set -euo pipefail # Exit on error, undefined vars, and pipeline failures
IFS=$'\n\t' # Stricter word splitting
# Read allowed domains from file
ALLOWED_DOMAINS_FILE="/etc/codex/allowed_domains.txt"
if [ -f "$ALLOWED_DOMAINS_FILE" ]; then
ALLOWED_DOMAINS=()
while IFS= read -r domain; do
ALLOWED_DOMAINS+=("$domain")
done < "$ALLOWED_DOMAINS_FILE"
echo "Using domains from file: ${ALLOWED_DOMAINS[*]}"
else
# Fallback to default domains
ALLOWED_DOMAINS=("api.openai.com")
echo "Domains file not found, using default: ${ALLOWED_DOMAINS[*]}"
fi
# Ensure we have at least one domain
if [ ${#ALLOWED_DOMAINS[@]} -eq 0 ]; then
echo "ERROR: No allowed domains specified"
exit 1
fi
# Flush existing rules and delete existing ipsets
iptables -F
iptables -X
iptables -t nat -F
iptables -t nat -X
iptables -t mangle -F
iptables -t mangle -X
ipset destroy allowed-domains 2>/dev/null || true
# First allow DNS and localhost before any restrictions
# Allow outbound DNS
iptables -A OUTPUT -p udp --dport 53 -j ACCEPT
# Allow inbound DNS responses
iptables -A INPUT -p udp --sport 53 -j ACCEPT
# Allow localhost
iptables -A INPUT -i lo -j ACCEPT
iptables -A OUTPUT -o lo -j ACCEPT
# Create ipset with CIDR support
ipset create allowed-domains hash:net
# Resolve and add other allowed domains
for domain in "${ALLOWED_DOMAINS[@]}"; do
echo "Resolving $domain..."
ips=$(dig +short A "$domain")
if [ -z "$ips" ]; then
echo "ERROR: Failed to resolve $domain"
exit 1
fi
while read -r ip; do
if [[ ! "$ip" =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
echo "ERROR: Invalid IP from DNS for $domain: $ip"
exit 1
fi
echo "Adding $ip for $domain"
ipset add allowed-domains "$ip"
done < <(echo "$ips")
done
# Get host IP from default route
HOST_IP=$(ip route | grep default | cut -d" " -f3)
if [ -z "$HOST_IP" ]; then
echo "ERROR: Failed to detect host IP"
exit 1
fi
HOST_NETWORK=$(echo "$HOST_IP" | sed "s/\.[0-9]*$/.0\/24/")
echo "Host network detected as: $HOST_NETWORK"
# Set up remaining iptables rules
iptables -A INPUT -s "$HOST_NETWORK" -j ACCEPT
iptables -A OUTPUT -d "$HOST_NETWORK" -j ACCEPT
# Set default policies to DROP first
iptables -P INPUT DROP
iptables -P FORWARD DROP
iptables -P OUTPUT DROP
# First allow established connections for already approved traffic
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
# Then allow only specific outbound traffic to allowed domains
iptables -A OUTPUT -m set --match-set allowed-domains dst -j ACCEPT
# Append final REJECT rules for immediate error responses
# For TCP traffic, send a TCP reset; for UDP, send ICMP port unreachable.
iptables -A INPUT -p tcp -j REJECT --reject-with tcp-reset
iptables -A INPUT -p udp -j REJECT --reject-with icmp-port-unreachable
iptables -A OUTPUT -p tcp -j REJECT --reject-with tcp-reset
iptables -A OUTPUT -p udp -j REJECT --reject-with icmp-port-unreachable
iptables -A FORWARD -p tcp -j REJECT --reject-with tcp-reset
iptables -A FORWARD -p udp -j REJECT --reject-with icmp-port-unreachable
echo "Firewall configuration complete"
echo "Verifying firewall rules..."
if curl --connect-timeout 5 https://example.com >/dev/null 2>&1; then
echo "ERROR: Firewall verification failed - was able to reach https://example.com"
exit 1
else
echo "Firewall verification passed - unable to reach https://example.com as expected"
fi
# Always verify OpenAI API access is working
if ! curl --connect-timeout 5 https://api.openai.com >/dev/null 2>&1; then
echo "ERROR: Firewall verification failed - unable to reach https://api.openai.com"
exit 1
else
echo "Firewall verification passed - able to reach https://api.openai.com as expected"
fi