0x000035ef – Error_Ipsec_Ike_Sa_Deleted – IKE SA Deleted by Peer Before Establishment Completed

The error code 0x000035ef means that a secure connection was deleted before it was fully set up.

This can happen for several reasons, like wrong settings, network issues, or devices not working well together. If you see this error, you might notice your internet disconnecting often, trouble connecting to Wi-Fi, or slowness when using the internet.

To fix it, check your device settings, update software, and make sure firewalls allow the right traffic. Ignoring these problems can risk your private information and slow down your work.

Knowing why this happens can help you avoid it in the future.

Error meaning:

An "error" in IKE SA means there's a problem stopping secure communication between devices.

This can cause issues like failed connections and trouble sending encrypted information, making it important for network experts to fix these problems quickly.

Causes:

Potential reasons for IKE SA errors:

1. Security settings are not set up correctly on the client or server.
2. Network problems like slow connections or lost data packets.
3. Different versions of IKE not working well together.
4. Firewalls or security devices blocking IKE traffic.
5. The other device is too busy or not working properly to complete the connection.

Symptoms:

Symptoms of IKE SA Errors:

1. Frequent disconnections that interrupt secure communication.
2. Difficulty in connecting to new networks, causing delays or timeouts.
3. Slow network performance, with noticeable lag or delays.
4. Loss of data packets, meaning some information doesn't get through.
5. Error messages in system logs related to IKE SA deletions.
6. Problems with authentication or encryption, indicating possible configuration errors.

These symptoms mean there might be issues that need fixing to keep the network safe and working well.

Solutions:

Step 1: Check the settings of both devices. Make sure they have the same encryption methods and key lifetimes.

Step 2: Look at the firewall settings. Make sure that UDP ports 500 and 4500 are open so the devices can talk to each other.

Step 3: Look at the logs on the devices. Find any error messages that can help you understand what went wrong.

Step 4: Update the firmware of the devices and make sure they are using the latest IKE protocol version.

Step 5: If the problem is still there, restart both devices to refresh their connections.

Step 6: If none of these steps work, check the vendor's documentation or contact their support for help with the issue.

Impact:

• Deleting the IKE Security Association (SA) stops the secure tunnel from being created.
• This can lead to sensitive information being exposed and not kept safe.
• Communication between systems fails, causing problems in sending and receiving data.
• Systems may go down, resulting in less work getting done and lower productivity.
• If IKE SA deletions happen often, people may lose trust in the network's safety.
• Increased chances of security breaches can occur, which is dangerous.
• The organization might spend money to fix these problems and could lose a good reputation.

Relevance:

IKE SA deletions are often linked to Windows operating systems like Windows 10 and Windows Server 2016, especially when using software like VPNs or firewalls.

When an IKE Security Association (SA) gets deleted too soon, it can show that there might be problems with the network, like settings being wrong or someone trying to break in. This can lead to interruptions in secure connections and could put important information at risk.

If this happens a lot, it can mean there are ongoing problems that can make users worried and might even break rules about data safety. It's important to keep a close eye on these issues to keep networks safe and strong against new threats.

Prevention:

To avoid encountering IKE SA deletions in the future, follow these steps:

1. Make sure both devices are set up with the same settings (like encryption and authentication methods).
2. Keep your device software and firmware updated.
3. Watch for unusual activity on your network.
4. Set firewalls to allow IKE traffic but block harmful connections.
5. Use strong passwords or certificates for better security.
6. Keep records of IKE connections to help find problems quickly.

People Also Ask

What Is IKE SA in IPSEC Vpns?

IKE SA stands for Internet Key Exchange Security Association. It helps set up secure connections in IPsec VPNs. It manages keys, checks identities, and uses codes to keep data safe and private. This way, only the right people can see the information.

How Can I Check for Peer Device Logs?

To check peer device logs, go to the device's control panel. Make sure logging is turned on and set to the right level. Then, look through the logs to find any notes about connection tries and mistakes.

Does This Error Affect Network Performance?

Yes, this error can make the network slower and less reliable. It means there was a problem setting up a safe connection, which can stop data from moving smoothly. This can cause interruptions and make using the network less efficient during that time.

Are There Specific Devices More Prone to This Error?

Some network devices, like old ones or those that aren't powerful enough, can have more trouble making secure connections. Keeping their software updated and checking how well they work can help fix these problems.

Can Firewall Settings Influence IKE SA Establishment?

Yes, firewall settings can affect how IKE Security Association (SA) connections are made. If the rules are not set up correctly, they might block important parts needed for the connection. It's important to configure the firewall properly for a successful IKE SA setup.