Remote-access Guide

cisco remote access vpn troubleshooting commands

by Dr. Autumn Pouros Published 2 years ago Updated 1 year ago
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With multiple sessions running on a remote access VPN, troubleshooting can be difficult given the size of the logs. You can use the debug webvpn condition command to set up filters to target your debug process more precisely. debug webvpn condition {group name | p-ipaddress ip_address [ {subnet subnet_mask | prefix length}] | reset | user name}

Full Answer

How to set up a remote access VPN?

Using a web browser, open https://ravpn-address , where ravpn-address is the IP address or hostname of the outside interface on which you are allowing VPN connections. You identify this interface when you configure the remote access VPN. The system prompts the user to log in.

What are the two access lists used in a VPN configuration?

There are two access lists used in a typical IPsec VPN configuration. One access list is used to exempt traffic that is destined for the VPN tunnel from the NAT process. The other access list defines what traffic to encrypt; this includes a crypto ACL in a LAN-to-LAN setup or a split-tunneling ACL in a Remote Access configuration.

How do I configure remote access VPN on firepower threat defense?

Make an SSH connection to the Firepower Threat Defense device and verify that traffic is being sent and received for the remote access VPN. Use the following commands. The following are examples of configuring remote access VPN. In remote access VPN, you might want users on the remote networks to access the Internet through your device.

How to resolve IPSec VPN problems?

When a new SA has been established, the communication resumes, so initiate the interesting traffic across the tunnel to create a new SA and re-establish the tunnel. If you clear ISAKMP (Phase I) and IPsec (Phase II) security associations (SAs), it is the simplest and often the best solution to resolve IPsec VPN problems.

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How do I troubleshoot Cisco VPN connection problems?

Cisco VPN not connecting – simple fix without a rebootClose CISCO VPN by right clicking it in the bottom right Windows tray bar.Open windows task manager with CTRL + SHIFT + ESCAPE.Go to services and find vpnagent.Right click it and select STOP, wait for it to stop completely.Right click it again and select START.More items...•

How do I test a Cisco VPN connection?

Testing Cisco ASA VPNOpen the Cisco AnyConnect Configuration Wizard and send a test authentication request: In the Servers in the Selected Group area, select the server you want to test. ... Test the login from Cisco AnyConnect Secure Mobility Client:

Which command is used to check VPN tunnel is up or not?

This command “Show vpn-sessiondb anyconnect” command you can find both the username and the index number (established by the order of the client images) in the output of the “show vpn-sessiondb anyconnect” command.

How do I fix Cisco VPN client?

0:045:59Fix Cisco VPN not working in Windows 10 - YouTubeYouTubeStart of suggested clipEnd of suggested clipBelow are some useful tips you can try one repair current install of Cisco VPN as admin hint. YouMoreBelow are some useful tips you can try one repair current install of Cisco VPN as admin hint. You may redownload the original setup file then follow the steps below plan a check whether windows

How do I know if site VPN is working?

To verify that your VPN tunnel is working properly, it is necessary to ping the IP address of a computer on the remote network. By pinging the remote network, you send data packets to the remote network and the remote network replies that it has received the data packets.

How does Cisco AnyConnect VPN Work?

Remote and mobile users use the Cisco AnyConnect Secure VPN client to establish VPN sessions with the adaptive security appliance. The adaptive security appliance sends web traffic to the Web Security appliance along with information identifying the user by IP address and user name.

How do I test VPN tunnel?

Check the current status using the Amazon VPC consoleSign in to the Amazon VPC console.In the navigation pane, under Site-to-Site VPN Connections, choose Site-to-Site VPN Connections.Select your VPN connection.Choose the Tunnel Details view.Review the Status of your VPN tunnel.More items...•

How do I check VPN routes?

You can use a tool like Wireshark to "sniff" the traffic on your local network. Wireshark will allow you to see which traffic is going where based on the source and destination IP addresses. Set up Wireshark on an interface that is between the hosts you want to test.

How do I check my IPsec status?

To view status information about active IPsec tunnels, use the show ipsec tunnel command. This command prints status output for all IPsec tunnels, and it also supports printing tunnel information individually by providing the tunnel ID.

How do I fix authentication failed on VPN?

11 Ways To Fix The VPN Authentication Failed Error in 2022Reboot Your Computer. Sometimes, the simplest solutions are the best. ... Disable Your Firewall. ... Try a Wired Connection. ... Use a Different VPN Protocol. ... Try an Alternate DNS Server. ... Try a Different WiFi Network. ... Connect to a Different VPN Server. ... Reinstall Your VPN.More items...•

Why wont my VPN connect?

If your VPN software is not working properly, you can do several things: check your network settings, change your server, make sure the right ports are opened, disable the firewall, and reinstall your VPN software. If none of the below methods are working, it's time to contact your VPN provider.

Why is Cisco AnyConnect Login failed?

The “Login failed” error message appears when you have entered an incorrect or invalid username or password combination, when trying to log into the Campus or 2-factor VPN services, via the Web VPN gateway with your browser, or via the Cisco AnyConnect client.

How do I know if traffic is going through VPN?

You can use a tool like Wireshark to "sniff" the traffic on your local network. Wireshark will allow you to see which traffic is going where based on the source and destination IP addresses. Set up Wireshark on an interface that is between the hosts you want to test.

How do I know if I am on a VPN?

To see if you're using a proxy/VPN online, go to www.whatismyproxy.com. It will say if you're connected to a proxy or not. PC: Check under your WiFi settings, to see if there is a VPN/proxy showing up. Mac: Check your top status bar.

How do I turn on my VPN?

If you haven't already, add a VPN.Open your phone's Settings app.Tap Network & internet. VPN. ... Next to the VPN you want to change, tap Settings .Turn Always-on VPN on or off. If you've set up a VPN through an app, you won't have the always-on option.If needed, tap Save.

Is my VPN leaking?

There are easy ways to test for a leak, again using websites like Hidester DNS Leak Test(Opens in a new window), DNSLeak.com(Opens in a new window), or DNS Leak Test.com(Opens in a new window). You'll get results that tell you the IP address and owner of the DNS server you're using.

How to check if IPSEC tunnels are working?

If you want to see if the IPSec tunnels are working and passing traffic, you can start by looking at the status of Phase 1 SA. Type show crypto isakmp sa detail, as demonstrated in Example 16-50. If the ISAKMP negotiations are successful, you should see the state as AM_ACTIVE.

How to check IPSEC SA?

You can also check the status of the IPSec SA by using the show crypto ipsec sa command, as shown in Example 16-51. This command displays the negotiated proxy identities along with the actual number of packets encrypted and decrypted by the IPSec engine.

What is Cisco ASA?

Cisco ASA comes with many show commands to check the health and status of the IPSec tunnels. For troubleshooting purposes, there is a rich set of debug commands to isolate the IPSec-related issues.

What happens after NAT-T?

After NAT-T negotiations, Cisco ASA prompts the user to specify user credentials. Upon successful user authentication, the security appliance displays a message indicating that the user (ciscouser in this example) is authenticated, as shown in Example 16-56.

What happens if NAT-T is not negotiated?

If NAT-T is not negotiated or a NAT/PAT device is not detected, they display the Remote end is NOT behind a NAT device. This end is NOT behind a NAT device message, as shown in Example 16-55. Example 16-55. debug Output to Show NAT-T Discovery Process.

How does a client request mode-config?

The client requests mode-config attributes by sending a list of client-supported attributes, as shown in Example 16-57. Cisco ASA replies back with all of its supported attributes and the appropriate information.

What does "PHASE 1 COMPLETED" mean in Cisco ASA?

After pushing down the attributes, Cisco ASA displays the "PHASE 1 COMPLETED" message indicating that the ISAKMP SA is successfully negotiated, as demonstrated in Example 16-58.

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