A situation where you are in a public place and see the network My Public WiFi or Mikrotik, but the Internet does not appear, it is found everywhere. This software, often based on mikrotiks, turns a computer or router into an access point with user authentication. However, despite its popularity, the system frequently crashes, requiring immediate intervention from the administrator or user.
The causes may lie both with your provider and in your device's local settings. Sometimes the problem lies in a full event log, while other times it's as simple as a low balance on your telecom account. In this article, we'll examine all possible failure scenarios in detail.
Restoring functionality requires a thorough diagnostic process. Avoid resetting the equipment immediately, as this could result in the loss of the entire local network configuration. It's best to start by checking the basic connection parameters and the status of client devices.
The main reasons for lack of network access
The first thing to check if you have no internet is the status of the gateway itself. If the equipment HotSpot If the network doesn't receive an IP address from an upstream provider, user authorization will be physically impossible. Providers often block access to opaque bridges or require MAC address binding.
The second common cause is reaching the limit on simultaneous connections. The default software settings often limit this to 10 or 20 clients. If there are more people in a cafe or hostel, new users simply won't be able to log in, although the network will be visible.
⚠️ Important: If you are a network administrator, ensure that the server time is accurate. Clock out-of-sync of more than 5 minutes may result in certificate validation errors and inability to log in to your account.
Human error is also a factor to consider. Users often forget to pay for access or enter data incorrectly. The system may lock the device after three unsuccessful password attempts, creating the illusion that the network is down.
Problems with authorization and the login portal
The most common scenario is that the authorization page simply doesn't appear. This happens because modern browsers and operating systems actively use the protocol. HTTPS, which blocks redirection to the captive portal. The browser considers the connection insecure and terminates the redirect.
To resolve this issue, the user must manually navigate to any HTTP site. Try entering [website name] in the address bar. http://neverssl.com or simply 8.8.8.8This will force a request that will be intercepted by the gateway and redirected to the login page.
If the page loads but the "Login" button is inactive or returns an error, check your DNS settings. Sometimes public network providers block third-party DNS servers (such as Google or Cloudflare), requiring you to use only their infrastructure for correct name resolution.
In some cases, antivirus software on the client device may interpret the redirect attempt as an attack. Man-in-the-MiddleTemporarily disabling protection or adding the portal address to the exceptions helps resolve the issue.
Mikrotik hardware configuration errors
For administrators who have deployed a network based on Mikrotik RouterOS, it is critical to check the status of the service HotSpotIf the process freezes or runs out of memory, the service stops processing new requests. Restarting the service often resolves the issue without a full router reboot.
It is necessary to check the availability of free addresses in the pool. IP PoolIf the pool is exhausted, new clients will not be assigned an IP address and will remain in the "Limited" status. Increasing the range or reducing the lease time solves this problem.
/ip hotspot active print
/ip hotspot user profile print
These terminal commands will show active users and profiles. Note the parameter rate-limitIf it is set too low, users will think that the internet is not working, even though the connection is formally established.
⚠️ Warning: Changing settings Walled Garden This requires caution. If you add a domain with an error, users may gain free access to resources that should be paid, or, conversely, lose access to essential services.
It's also worth checking the system logs. The command /log print will show authorization errors or problems with the radius server if it is used for an external user base.
IP and DNS conflicts
Duplicate IP addresses in a local network is a classic problem that completely paralyzes work MikroTik or any other gateway. If another router on the network accidentally hands out addresses from the same range, data packets begin to circulate or get lost.
DNS issues can manifest themselves as follows: instant messaging apps work, but web pages don't load in the browser. This indicates that DNS queries are failing. In the settings HotSpot It is necessary to explicitly specify reliable DNS servers, for example, from the provider itself or public ones 1.1.1.1.
| Symptom | Probable cause | Action |
|---|---|---|
| The authorization page is not loading. | Blocking redirects by your browser | Enter http://neverssl.com |
| It says "No internet access" | No connection with the provider | Check the WAN cable and balance |
| There is internet, but websites don't open. | DNS error | Ping 8.8.8.8 |
| Exits the portal in 5 minutes | Session timed out | Check Keepalive Timeout |
It's important to ensure that client devices don't have static IP addresses that conflict with the network. Configuration should be strictly automatic (DHCP).
The impact of antiviruses and firewalls
Third party antiviruses such as Kaspersky, ESET or built-in Windows Defender, can block connections to public networks. They scan traffic and, if they detect an unencrypted login portal, can terminate the connection for security reasons.
Adding the network to the "Public" category with discovery enabled often helps. Corporate networks may have stricter security policies that completely prohibit access to untrusted access points.
☑️ Antivirus blocking diagnostics
macOS users should check their proxy settings. Sometimes, after using corporate networks or VPN clients, proxy settings remain active and interfere with normal connection. My Public WiFi.
Restrictions from the provider
Internet service providers often view the use of Wi-Fi hotspot equipment as a breach of contract, especially for residential plans. They may employ detection technologies. NAT (for example, DPI) to block internet sharing between multiple devices.
In this case, changing the parameter helps TTL (Time To Live). By default, Windows sends packets with a TTL of 128, and routers lower this value. The ISP detects the TTL change and blocks the connection. Changing the TTL on the computer or router can bypass this block.
⚠️ Please note: Bypassing provider restrictions by changing the TTL may be against your contract. Before using such methods, please check your provider's official rules.
The provider may also have carried out technical work or changed the authorization scheme, which requires updating the configuration on the access point administrator's side.
How to change TTL in Windows?
Open a command prompt as administrator. Enter the command: netsh interface ipv4 set global defaultcurhoplimit=65 . To reset, use 128. This will change the initial TTL for all outgoing packets.
FAQ: Frequently Asked Questions
Why does the login page only open in Safari but not in Chrome?
This is due to browser security policies. Chrome and Firefox actively block redirects to HTTP sites if you attempt to access an HTTPS resource. Safari on iOS has a built-in Captive Portal detection mechanism, which is more aggressive and forces the login window to open.
What should I do if I get "Error 651" or "No Internet Access"?
Error 651 usually indicates a modem or driver issue in Windows, but in the context of public Wi-Fi, it means the device hasn't received an IP address. Try forgetting the network in the Wi-Fi settings and reconnecting, after turning the adapter off and on again.
Is it possible to use My Public WiFi without internet for a local network?
Yes, the program allows you to create a local network for file sharing or gaming, even without a global network connection. To do this, uncheck "Enable Internet Sharing" in the settings or a similar option if you use third-party hotspot software.
How long is my browsing history stored on public Wi-Fi?
This depends on the network administrator's logging settings and the country's legislation. In Russia, Wi-Fi distribution providers are required to store connection metadata (MAC addresses, login times) for a certain period of time in accordance with the Yarovaya Law, but traffic content is typically not stored due to HTTPS encryption.