IPsec Pre-Shared Key Generator. PSK Generator provides a secure process to negotiate a 64-byte IPsec Pre-Shared Key (also known as a Shared Secret or PSK) through insecure means, such as email. Note: This page uses client side javascript. It does not transmit any entered or calculated information. Learn more about this PSK Generator. RFC 2409 IKE November 1998 This does not implement the entire Oakley protocol, but only a subset necessary to satisfy its goals. It does not claim conformance or compliance with the entire Oakley protocol nor is it dependant in any way on the Oakley protocol. Configure the IPsec tunnel pre-shared key or certificate trustpoint. Asa2(config-tunnel-ipsec)#ikev1 pre-shared-key thisisakey. Create a crypto map and match based on the previously created ACL. Asa2(config)#crypto map ikev1-map 1 match address ikev1-list. Configure the peer IP address. Asa2(config)#crypto map ikev1-map 1 set peer 10. Apr 03, 2020 Generating a strong pre-shared key A pre-shared key (also called a shared secret or PSK) is used to authenticate the Cloud VPN tunnel to your peer VPN gateway. As a security best practice, it's. The Nonce's are combined with the Pre-Shared-Key to create a Seed value for generating secret keys. The relative part of the IKE RFC is here: For pre-shared keys: SKEYID = prf(pre-shared-key, Nib Nrb) SKEYID is the Seed value that will later be used to generate additional secret keys. This article discusses how to configure a preshared key for use with Layer 2 Tunneling Protocol (L2TP). To use L2TP in Windows Server 2003, you must have a public key infrastructure (PKI) to issue computer certificates to the virtual private network (VPN) server and to clients so that the Internet Key Exchange (IKE) authentication process can occur.

Contents

Introduction

Cisco IOS® Software Release 12.3(2)T code introduces the functionality that allows the router to encrypt the ISAKMP pre-shared key in secure type 6 format in nonvolatile RAM (NVRAM). The pre-shared key to be encrypted can be configured either as standard, under an ISAKMP key ring, in aggressive mode, or as the group password under an EzVPN server or client setup. This sample configuration details how to set up encryption of both existing and new pre-shared keys.

Prerequisites

Requirements

There are no specific requirements for this document.

Components Used

The information in this document is based on this software version:

• Cisco IOS Software Release 12.3(2)T

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.

Conventions

Refer to the Cisco Technical Tips Conventions for more information on document conventions.

Configure

This section presents you with the information you can use to configure the features this document describes.

Note: Use the Command Lookup Tool (registered customers only) to obtain more information on the commands used in this section.

These two new commands are introduced in order to enable pre-shared key encryption:

• key config-key password-encryption [master key]

• password encryption aes

The [master key] is the password/key used to encrypt all other keys in the router configuration with the use of an Advance Encryption Standard (AES) symmetric cipher. The master key is not stored in the router configuration and cannot be seen or obtained in any way while connected to the router.

Once configured, the master key is used to encrypt any existing or new keys in the router configuration. If the [master key] is not specified on the command line, the router prompts the user to enter the key and to re-enter it for verification. If a key already exists, the user is prompted to enter the old key first. Keys are not encrypted until you issue the password encryption aes command.

Batman arkham city product key generator. The master key can be changed (although this should not be necessary unless the key has become compromised in some way) by issuing the key config-key.. command again with the new [master-key]. Any existing encrypted keys in the router configuration are re-encrypted with the new key.

You can delete the master key when you issue the no key config-key... However, this renders all currently configured keys in the router configuration useless (a warning message displays that details this and confirms the master key deletion). Since the master key no longer exists, the type 6 passwords cannot be unencrypted and used by the router.

Note: For security reasons, neither the removal of the master key, nor the removal of the password encryption aes command unencrypts the passwords in the router configuration. Once passwords are encrypted, they are not unencrypted. Existing encrypted keys in the configuration are still able to be unencrypted provided the master key is not removed.

Additionally, in order to see debug-type messages of password encryption functions, use the password logging command in configuration mode.

Configurations

This document uses these configurations on the router:

Ipsec Vpn Pre Shared Key Generator

Verify

There is currently no verification procedure available for this configuration.

Troubleshoot

There is currently no specific troubleshooting information available for this configuration.

Related Information

Configuring an IKE Policy for Preshared Keys

An IKE policy defines a combinationof security parameters (IKE proposals) to be used during IKE negotiation. It defines a peeraddress, the preshared key for the given peer, and the proposals needed for that connection.During the IKE negotiation, IKE looks for an IKE policy that is the same on both peers. Thepeer that initiates the negotiation sends all its policies to the remote peer, and the remotepeer tries to find a match.

A match is made when both policies from the two peers have a proposal thatcontains the same configured attributes. If the lifetimes are not identical, the shorter lifetimebetween the two policies (from the host and peer) is used. The configured preshared key mustalso match its peer.

You can create multiple, prioritized proposals at each peer to ensure thatat least one proposal will match a remote peer’s proposal.

First, you configure one or more IKE proposals; then you associate theseproposals with an IKE policy. You can also prioritize a list of proposals used by IKE in the

To configure an IKE policy, include the [edit security ike] hierarchy level and specify a peer address:

The IKE policy peer address must be an IPsec tunnel destination address.

Tasks for configuring an IKE policy are:

Configuring the Description for an IKE Policy

To specify a description for an IKE policy, include the [edit security ike policy mode statement andspecify main at the ike-peer-address] hierarchy level:

For Junos OS in FIPS mode, the aggressive option for IKEv1 is not supported with themode statement at the policy-name] hierarchy level.

Configuring the Preshared Key for an IKE Policy

IKE policy preshared keys authenticate peers. You must manually configurea preshared key, which must match that of its peer. The preshared key can be an ASCII text(alphanumeric) key or a hexadecimal key.

A local certificate is an alternative to the preshared key. A commit operation failsif either a preshared key or a local certificate is not configured.

To configure an IKE policy preshared key, include the [edit security ike policy proposals statementat the ike-peer-address] hierarchylevel and specify one or more proposal names:

Example: Configuring an IKE Policy

Define two IKE policies: policy 10.1.1.2and policy 10.1.1.1. Each policy is associated with proposal-2.

Updates to the current IKE proposal and policy configuration arenot applied to the current IKE SA; updates are applied to newIKE SAs.

If you want the new updates to take immediate effect, you must clear theexisting IKE security associations so that they will be reestablished with the changed configuration.For information about how to clear the current IKE security association, see the CLI Explorer.