In junos they have a great feature.
To decrypt a configured pre-shared-key, you only need to apply the hash with the request system decrypt.
This works great if you have pre-existing ipsec-configurations , and you mis-placed or don't want to re-key a vpn tunnel.
or if a sec-engineer leaves the company and fails to document the PSK for vpn-tunnels.
e.g
A fortigate for example , does not have this feature.
So unless your fortigate is peer'd with a linux-swan, cisco asa or juniperSRX, you have almost a zero% chance of decoding the share PSK.
This also make the fortiOS superior in protection of the "PSK", since it can't easily be decode base on just a interception of a fortios conf file.
So when passing JuniperSRX cfg files around, you want to redact the PSK values.
Ken Felix
NSE ( network security expert) and Route/Switching Engineer
kfelix -----a----t---- socpuppets ---dot---com
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=( @ @ )=
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FAQs
To decrypt a configured pre-shared-key, you only need to apply the hash with the request system decrypt. This works great if you have pre-existing ipsec-configurations , and you mis-placed or don't want to re-key a vpn tunnel. or if a sec-engineer leaves the company and fails to document the PSK for vpn-tunnels.
How do preshared keys work? ›
A pre-shared key (PSK) is a super-long series of seemingly random letters and numbers generated when a device joins a network through a Wi-Fi access point (AP). The process begins when a user logs into the network using the SSID (name of the network) and password (sometimes called a passphrase).
How do I find my pre-shared VPN key? ›
Check the Keychain (Applications > Utilities > Keychain Access). The Pre-Shared Key is usually saved here. Enter "Shared Secret" into the search bar to view a list of all your saved PSKs.
How do I change my pre-shared key? ›
Replace pre-shared keys for VPNs
- Next to Pre-Shared Key, select Edit. To automatically generate a key, click Generate. To manually enter the key, enter or paste the key. To transfer the key to external components, copy the key, or click Export.
- Click OK.
Note: The default login username is root and the default password is blank.
Is the preshared key the password? ›
A pre-shared key is basically just a shared secret or password that is used to authenticate an individual attempting to join a wireless network (no username or identification or than the key is required).
What is the pre-shared key algorithm? ›
Pre-shared key encryption (symmetric) uses algorithms like Twofish, AES, or Blowfish, to create keys—AES currently being the most popular. All of these encryption algorithms fall into two types: stream ciphers and block ciphers.
What is authentication with pre-shared key? ›
A pre-shared key is a string of characters that is used as an authentication key. You can use pre-shared keys for site-to-site VPN authentication and with third-party VPN clients. Both gateways create a hash value based on the pre-shared key and other information.
What is an IPsec pre-shared key? ›
The Pre-Shared Keys tab under VPN > IPsec defines key and identifier pairs which are used for authenticating IPsec tunnels. Primarily this is intended for use with mobile IPsec but there are occasional use cases for site-to-site tunnels as well. Identifier: A string used to identify a peer.
What are the advantages and disadvantages of the use of certificates over pre-shared keys? ›
While pre-shared keys are easier to work with, they are generally considered less secure than a certificate. Pros: Convenience--no need to go through the complicated process of obtaining a certificate.
A 'Shared Secret Key' is a confidential piece of information used for data encryption in computer networks, which, when not changed regularly, can lead to security vulnerabilities due to the risk of being discovered by capturing network packets.
Is pre-shared key safe? ›
Unavoidably, however, pre-shared keys are held by both parties to the communication, and so can be compromised at one end, without the knowledge of anyone at the other.
What is a pre-shared key on a router? ›
In the context of WPA (Wi-Fi Protected Access), PSK stands for Pre-Shared Key. It is a security mechanism used in WPA to establish a secure connection between a wireless client (such as a laptop, smartphone, or other Wi-Fi-enabled device) and a Wi-Fi access point.
What is the backdoor password for Juniper? ›
After analyzing the differences between the vulnerable and patched versions of ScreenOS, Rapid7's HD Moore determined that the authentication backdoor, which can be exploited via SSH or Telnet, involves the default password <<< %s(un='%s') = %u.
What is the password complexity of Juniper SRX? ›
By default, Junos OS passwords must be at least 6 characters long. The valid range for this option is 6 to 20 characters. maximum-length : Specifies the maximum number of characters allowed in a password. By default, Junos OS passwords have no maximum; however, only the first 128 characters are significant.
What is Juniper factory default login? ›
the default login user after booting it the first time is "root" without a password, then you see the shell console. To get into the CLI, you have to type "cli".
How does sharing key work? ›
Shared key encryption uses one key to encrypt and decrypt messages. For shared key cryptography to work, the sender and the recipient of a message must both have the same key, which they must keep secret from everybody else.
How does shared key authentication work? ›
Shared-key authentication (SKA) is a method of authentication where both the sender and receiver share a secret key or passphrase. This shared key is used to authenticate the identities of both parties and to secure communication between them.
How are shared keys generated? ›
You can generate the pre-shared key directly in a document by using JavaScript with the W3C Web Cryptography API. This API uses the Crypto. getRandomValues() method, which provides a cryptographic way of generating a pre-shared key.
