Net Operations

Network Operations

Network utilities for DNS lookup, SSL analysis, HTTP headers analysis, connectivity testing, port scanning, and HTTP requests.

Tools

check

Unified check tool for DNS, SSL, and HTTP analysis. Use type parameter to specify check type.

Parameters:

• type (string, optional): Check type - "dns" (default), "ssl", or "http"
• timeout (number, optional): Timeout in ms (default: 5000)

DNS Check (type="dns"):

• hostname (string, required): Hostname to check
• record_type (string, optional): DNS record type - "A" (default), "AAAA", "MX", "TXT", "CNAME", "NS"

SSL Check (type="ssl"):

• hostname (string, required): Hostname to check
• port (number, optional): Port for SSL check (default: 443)

HTTP Check (type="http"):

• url (string, required): URL to analyze

Examples:

// DNS lookup - A records (IPv4)
{ "tool": "check", "params": { "hostname": "example.com" } }

// DNS lookup - MX records (mail servers)
{ "tool": "check", "params": { "hostname": "gmail.com", "type": "dns", "record_type": "MX" } }

// SSL certificate analysis
{ "tool": "check", "params": { "hostname": "example.com", "type": "ssl" } }

// HTTP headers analysis (security & performance)
{ "tool": "check", "params": { "url": "https://example.com", "type": "http" } }

DNS Response:

{
  "success": true,
  "hostname": "example.com",
  "recordType": "A",
  "records": ["93.184.216.34"],
  "count": 1
}

SSL Response:

{
  "success": true,
  "hostname": "example.com",
  "port": 443,
  "ssl": {
    "valid": true,
    "subject": { "CN": "example.com" },
    "issuer": { "CN": "Let's Encrypt" },
    "validFrom": "Jan 1 00:00:00 2024 GMT",
    "validTo": "Apr 1 00:00:00 2024 GMT",
    "daysUntilExpiry": 30,
    "isExpired": false,
    "fingerprint": "..."
  }
}

HTTP Response:

{
  "success": true,
  "url": "https://example.com",
  "hostname": "example.com",
  "statusCode": 200,
  "security": {
    "hsts": true,
    "noSniff": true,
    "frameGuard": "DENY",
    "csp": true
  },
  "performance": {
    "cacheControl": "max-age=31536000",
    "compression": "gzip"
  },
  "recommendations": []
}

connect

TCP connectivity testing - test if a host and port is reachable.

Parameters:

• host (string, required): Hostname or IP address
• port (number, optional): Port number (default: 80)
• timeout (number, optional): Timeout in ms (default: 5000)

Examples:

// Test web server connectivity
{ "tool": "connect", "params": { "host": "example.com", "port": 80 } }

// Test SSH port
{ "tool": "connect", "params": { "host": "server.example.com", "port": 22 } }

// Test database port
{ "tool": "connect", "params": { "host": "db.example.com", "port": 3306 } }

Response:

{
  "success": true,
  "host": "example.com",
  "port": 80,
  "status": "open",
  "responseTime": 15,
  "message": "Port 80 is open on example.com (15ms)"
}

port_scan

Scan multiple ports on a host.

Parameters:

• host (string, required): Hostname or IP address
• ports (string|number|array, optional): Port configuration (default: "common")
  • "common" - Common ports (21, 22, 23, 25, 53, 80, 110, 143, 443, 465, 587, 993, 995, 3306, 3389, 5432, 6379, 8080, 8443)
  • "web" - Web ports (80, 443, 8080, 8443)
  • "mail" - Mail ports (25, 110, 143, 465, 587, 993, 995)
  • "db" - Database ports (1433, 1521, 3306, 5432, 6379, 27017)
  • Single port number
  • Array of port numbers
• timeout (number, optional): Timeout per port in ms (default: 3000)

Examples:

// Scan common ports
{ "tool": "port_scan", "params": { "host": "example.com" } }

// Scan web ports
{ "tool": "port_scan", "params": { "host": "example.com", "ports": "web" } }

// Scan specific ports
{ "tool": "port_scan", "params": { "host": "example.com", "ports": [80, 443, 8080] } }

Response:

{
  "success": true,
  "host": "example.com",
  "scan": {
    "total": 20,
    "open": [22, 80, 443],
    "closed": [21, 23, 25, ...],
    "filtered": [],
    "results": [
      { "port": 22, "status": "open" },
      { "port": 80, "status": "open" },
      ...
    ]
  }
}

http_request

Make HTTP/HTTPS requests.

Parameters:

• url (string, required): Request URL
• method (string, optional): HTTP method - "GET" (default), "POST", "PUT", "DELETE", "PATCH"
• headers (object, optional): Request headers
• body (string|object, optional): Request body (for POST/PUT/PATCH)
• timeout (number, optional): Timeout in ms (default: 10000)
• follow_redirects (boolean, optional): Follow redirects (default: true)

Examples:

// Simple GET request
{ "tool": "http_request", "params": { "url": "https://api.example.com/data" } }

// POST with JSON body
{
  "tool": "http_request",
  "params": {
    "url": "https://api.example.com/create",
    "method": "POST",
    "body": { "name": "Test", "value": 123 }
  }
}

// With custom headers
{
  "tool": "http_request",
  "params": {
    "url": "https://api.example.com/protected",
    "headers": { "Authorization": "Bearer token123" }
  }
}

Response:

{
  "success": true,
  "statusCode": 200,
  "statusMessage": "OK",
  "headers": { ... },
  "body": { ... },
  "size": 1234
}

Common Use Cases

Diagnose Network Issues

// 1. Check DNS resolution
{ "tool": "check", "params": { "hostname": "example.com" } }

// 2. Test connectivity
{ "tool": "connect", "params": { "host": "example.com", "port": 443 } }

// 3. Check SSL certificate
{ "tool": "check", "params": { "hostname": "example.com", "type": "ssl" } }

// 4. Test HTTP endpoint
{ "tool": "http_request", "params": { "url": "https://example.com" } }

Security Audit

// Check HTTP security headers
{ "tool": "check", "params": { "url": "https://example.com", "type": "http" } }

// Check SSL certificate
{ "tool": "check", "params": { "hostname": "example.com", "type": "ssl" } }

// Scan common ports
{ "tool": "port_scan", "params": { "host": "example.com" } }

Check Server Health

// Check web server ports
{ "tool": "port_scan", "params": { "host": "myserver.com", "ports": "web" } }

// Check database server
{ "tool": "connect", "params": { "host": "db.myserver.com", "port": 3306 } }

// Check SSH access
{ "tool": "connect", "params": { "host": "myserver.com", "port": 22 } }

Security

• Maximum HTTP response size is limited (1MB)
• Port scan is limited to 20 ports per request
• All operations have configurable timeouts
• HTTPS is recommended for sensitive requests

Error Handling

All tools return a consistent error format:

{
  "success": false,
  "error": "Error message describing what went wrong"
}

Best Practices for LLM

1. Start with DNS - If a host is unreachable, check DNS first with check
2. Use check for all checks - DNS, SSL, and HTTP analysis in one unified tool
3. Use appropriate timeouts - Increase timeout for slow networks
4. Check common ports - Use port_scan with port groups for quick assessment
5. Handle errors gracefully - Network operations can fail for many reasons