What is 192.168.4.1?
192.168.4.1 is a private IP address commonly used by ESP8266 devices and WiFi repeaters in configuration mode. Unlike standard router IPs like 192.168.1.1 or 192.168.0.1, this address is often used temporarily during initial setup or when the device is in AP (Access Point) mode.
Technical Specifications of 192.168.4.1
| Specification | Details |
|---|---|
| IP Address Class | Class C Private Address |
| Address Range | Part of 192.168.4.0/24 network |
| Subnet Mask | 255.255.255.0 |
| DHCP Range | 192.168.4.2 - 192.168.4.100 |
| Binary Format | 11000000.10101000.00000100.00000001 |
| Common Usage | ESP8266, WiFi Repeaters |
How to Access 192.168.4.1
Step 1: Connect
- Power on ESP8266/repeater
- Look for device's WiFi network
- Connect to the network
- Similar to WiFi setup process
Step 2: Access
- Open web browser
- Enter "192.168.4.1"
- Wait for configuration page
- Like hotspot setup interface
Step 3: Configure
- Select WiFi network
- Enter network password
- Save configuration
- Wait for device to reboot
Common Devices Using 192.168.4.1
| Device Type | Default SSID Pattern | Default Password | Notes |
|---|---|---|---|
| ESP8266 Module | ESP_XXXXXX | 12345678 | Development boards |
| WiFi Repeater | Repeater_XXXX | See device label | Range extenders |
| IoT Devices | IoT_Device_XX | 12345678 | Smart home devices |
| DIY Projects | Custom names | Custom setup | Arduino projects |
Common Configuration Tasks
WiFi Setup
- Select target network
- Enter network credentials
- Configure AP mode
- Set channel options
- Configure SSID
- Set security mode
Device Settings
- Update firmware
- Configure IP settings
- Set operating mode
- Power management
- LED control
- Reset options
Advanced Features
- MQTT configuration
- OTA updates
- API settings
- Debug options
- Custom scripts
- Sensor setup
Common Issues & Solutions
Connection Problems
- Check power supply
- Verify WiFi settings
- Reset device
- Check signal strength
- Verify credentials
Configuration Issues
- Clear browser cache
- Try different browser
- Check IP address
- Verify network mode
- Reset to defaults
Performance Issues
- Check WiFi channel
- Monitor memory usage
- Verify firmware version
- Test connectivity
- Check for interference
Security Best Practices
Essential Security
- Change default passwords
- Use strong encryption
- Regular updates
- Secure configuration
- Monitor access logs
Network Protection
- Isolate IoT devices
- Use secure protocols
- Enable encryption
- Restrict access
- Monitor connections
Data Protection
- Secure transmission
- Encrypt storage
- Regular backups
- Access control
- Update policies