Internet is out but ping works Common Causes and Solutions

You're experiencing a frustrating situation where your internet is out, but your ping is working. This is a common issue that can be caused by a faulty router, which can be identified by checking the device's lights.

The router's lights can indicate if it's receiving power or if there's a problem with the internet connection.

In some cases, a simple reboot of the router can resolve the issue. This is because many modern routers have a built-in reset function that can resolve connectivity problems.

Pinging a website shows you're connected to the internet, but you can't access the internet itself.

This issue can be caused by a misconfigured DHCP setup on your router.

Proper DHCP setup involves configuring the router to inform clients of the DNS server address.

If your laptop is using a static IP address, you need to manually enter the DNS server address.

Ping 8.8.8.8 shows that the DNS is wrong, and using a private DNS server like 1.1.1.1 may not be the issue.

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Your ISP provider may be forcing you to use their own DNS server, which is 197.199.225.11 and 197.199.225.12.

Adjusting the TCP MSS to 1380 or 1360 can help reduce packet fragmentation and improve internet browsing.

However, if you're still experiencing issues, it may be due to a problem with your router's configuration, such as a missing or incorrect DNS configuration.

In one case, a user's laptop was configured with a static IP address but didn't have the DNS server address set, causing the internet browsing issue.

Another user's router had a misconfigured DHCP setup, which caused the issue.

In both cases, the issue was resolved by either setting the DNS server address or configuring the DHCP setup correctly.

The key takeaway is that a ping working doesn't necessarily mean you have a stable internet connection.

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If pfsense is your firewall, check the status of the WAN interface, as a simple misconfiguration or a faulty cable can cause internet connectivity issues.

The WAN interface might be set to a different IP address than your ISP's gateway, preventing internet access.

In some cases, the pfsense firewall rules may be blocking internet traffic, so review the rules to ensure they're not inadvertently blocking your internet access.

A faulty DNS server configuration can also prevent internet access, even if ping works.

One of the most common issues with Pfsense is the incorrect configuration of the firewall rules, which can lead to dropped packets and connectivity problems.

Incorrectly configured firewall rules can be caused by a lack of understanding of the rules' syntax and order of execution.

Pfsense's default firewall rules are designed to block all incoming traffic by default, so it's essential to carefully configure the rules to allow necessary traffic.

A common mistake is to forget to create an allow rule for the WAN interface, resulting in no internet access.

In some cases, the configuration of the firewall rules can be overridden by the Pfsense package manager, which can cause unexpected behavior.

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A well-organized and well-documented configuration is crucial to troubleshooting and resolving configuration problems.

Pfsense's built-in logging and monitoring tools can help identify configuration issues, such as incorrect firewall rules or package conflicts.

Incorrectly configured DNS settings can also cause connectivity problems, especially if the DNS server is not reachable.

The Pfsense configuration file can become corrupted due to a power failure or other system issue, resulting in a non-functional firewall.

Pfsense firewall issues can be frustrating, especially when they're caused by incorrect configuration settings. One common issue is when the firewall is set to block all incoming traffic by default, which can prevent network access.

Incorrectly configured IPsec settings can also cause problems, such as dropped connections or slow performance. This can be resolved by ensuring the IPsec settings match the configuration of the remote VPN server.

Outdated Pfsense versions can also lead to firewall issues, including security vulnerabilities and compatibility problems. Regular updates are essential to prevent these issues.

Incorrectly configured NAT rules can cause issues with network access, including dropped connections or slow performance. This can be resolved by reviewing and adjusting the NAT rules to match the network setup.

In some cases, Pfsense firewall issues can be caused by hardware limitations, such as insufficient RAM or CPU power. Upgrading the hardware or adjusting the firewall settings can resolve these issues.

Ping working, but no internet browsing? It's a frustrating issue that can stump even the most experienced network administrators. One possible cause is a DNS configuration issue, where the laptop's DNS settings are not properly configured.

The problem might be that the laptop is using a static IP address, but the DNS settings are not set manually. Or, if the laptop is using DHCP, the DHCP server on the router might not be configured correctly.

A properly configured DHCP setup should look like this: it should inform the laptop of the DNS settings. If the DHCP is not set up correctly, the laptop might not be getting the IP address from the router, which can cause internet browsing issues.

The issue can be resolved by manually setting the DNS settings on the laptop, or by ensuring the DHCP server on the router is configured correctly.

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