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Configure MACsec in FIPS Mode

Learn to configure MACsec in FIPS mode.

Configure MACsec on Your Device in FIPS Mode

We can configure MACsec to secure point-to-point Ethernet links connecting your device with MACsec-capable MICs. Each point-to-point Ethernet link that you want to secure using MACsec must be configured independently. We can enable MACsec on device-to-device links using static connectivity association key (CAK) security mode.

You can configure different interface rates such as 40G, 100G, and 10G in port mode and specific interface rates such as 100G, 40G, and 10G in pic mode. In pic mode you can configure only one type of interface speed.

To configure MACsec on your device with Junos OS:

  1. Customize time, see Customize Time in FIPS Mode.

    We are not claiming NTP as part of FPT_STM_EXT.1 SFR. However, in our configuration guide, we activate or deactivate NTP services to validate MACsec tolerance and MACsec key-chain.

  2. Configure the MACsec security mode as for the connectivity association.

    Based on your requirement you can configure the offset offset-number value at the set security macsec connectivity-association connectivity-association-name hierarchy level to 0, 30, or 50.

  3. Create the pre-shared key by configuring the connectivity association key name (CKN) and connectivity association key (CAK).

    Based on your requirement you can configure the number-of-packets value at the set security macsec connectivity-association connectivity-association-name replay-protect replay-window-size hierarchy level from 0 through 65535.

  4. Set the MACsec Key Agreement (MKA) secure channel details.
  5. Set the MKA to security mode.

    here, the CA1 is an example of connectivity-association-name configured.

  6. Assign the configured connectivity association with a specified MACsec interface.

Configure Static MACsec for Layer 3 Traffic

To configure Static MACsec for Layer 3 traffic between device R0 and device R1:

In R0:

  1. Create the preshared key by configuring the connectivity association key name (CKN) and connectivity association key (CAK)
  2. Set the trace option values.
  3. Assign the trace to an interface.
  4. Configure the MACsec security mode as static-cak for the connectivity association.
  5. Set the MKA key server priority.
  6. Set the MKA transmit interval.
  7. Enable the MKA secure.
  8. Assign the connectivity association to an interface.

In R1:

  1. Create the preshared key by configuring the connectivity association key name (CKN) and connectivity association key (CAK)

  2. Set the trace option values.

  3. Assign the trace to an interface.

  4. Configure the MACsec security mode as static-cak for the connectivity association.

  5. Set the MKA transmit interval.

  6. Enable the MKA secure.

  7. Assign the connectivity association to an interface.

Configure MACsec with Keychain for Layer 3 Traffic

Synchronize both MACsec endpoint devices to NTP as both device’s time should be the same for key start time triggers. To configure MACsec with keychain for Layer 3 traffic between device R0 and device R1:

In R0:

  1. Assign a tolerance value to the authentication key chain.
  2. Create the secret password to use. It is a string of hexadecimal digits up to 64 characters long. The password can include spaces if the character string is enclosed in quotation marks. The keychain's secret-data is used as a CAK.

    You can configure up to 64 keys. For example, you can refer the following keys:

    Use the prompt command to enter a secret key value. For example, the secret key value is 2345678922334455667788992223334123456789223344556677889922233341.

    You can configure up to 64 secret keys. For example, you can refer the following secret keys:

  3. Associate the preshared keychain name with the connectivity association.
    Note:

    The cipher value can also be set as cipher-suite gcm-aes-128.

  4. Set the trace option values.
  5. Assign the trace to an interface.
  6. Configure the MACsec security mode as static-cak for the connectivity association.
  7. Set the MKA key server priority.
  8. Set the MKA transmit interval.
  9. Enable the MKA secure.
  10. Assign the connectivity association to an interface.

To configure MACsec with keychain for Layer 3 traffic:

In R1:

  1. Assign a tolerance value to the authentication key chain.

  2. Create the secret password to use. It is a string of hexadecimal digits up to 64 characters long. The password can include spaces if the character string is enclosed in quotation marks. The keychain's secret-data is used as a CAK.

    You can configure up to 64 keys. For example, you can refer the following keys:

    Use the prompt command to enter a secret key value. For example, the secret key value is 2345678922334455667788992223334123456789223344556677889922233341.

    You can configure up to 64 secret keys. For example, you can refer the following secret keys:

  3. Associate the preshared keychain name with the connectivity association.

  4. Note:
    • You can use the non-XPN ciphers AES-GCM-128 and AES-GCM-256 for 10G/xe interfaces macsec configuration only.
    • You can use the XPN ciphers AES-GCM-XPN-128 and AES-GCM-XPN-256 for 40G and 100G rates macsec configuration. You can also use the XPN ciphers AES-GCM-XPN-128 and AES-GCM-XPN-256 for 10G/xe interfaces macsec configuration, if it supports.
  5. Set the trace option values.

  6. Assign the trace to an interface.

  7. Configure the MACsec security mode as static-cak for the connectivity association.

  8. Set the MKA key server priority.

  9. Set the MKA transmit interval.

  10. Enable the MKA secure.

  11. Assign the connectivity association to an interface.

Configure Static MACsec for Layer 2 Traffic

To configure static MACsec for Layer 2 traffic between device R0 and device R1:

In R0:

  1. Set the MKA key server priority.
  2. Create the secret password to use. It is a string of hexadecimal digits up to 64 characters long. The password can include spaces if the character string is enclosed in quotation marks. The keychain's secret-data is used as a CAK.

    For example, the secret key value is 2345678922334455667788992223334123456789223344556677889922233341.

  3. Associate the preshared keychain name with the connectivity association.
  4. Set the trace option values.
  5. Assign the trace to an interface.
  6. Configure the MACsec security mode as static-cak for the connectivity association.
  7. Set the MKA key server priority.
  8. Set the MKA transmit interval.
  9. Enable the MKA secure.
  10. Assign the connectivity association to an interface.
  11. Configure VLAN tagging.
  12. Configure bridge domain.

    The interface-name1 and interface-name2 options at the set bridge-domains BD-110 interface hierarchy level are user defined interfaces which are part of the bridge domain.

In R1:

  1. Create the secret password to use. It is a string of hexadecimal digits up to 64 characters long. The password can include spaces if the character string is enclosed in quotation marks. The keychain's secret-data is used as a CAK.

    For example, the secret key value is 2345678922334455667788992223334123456789223344556677889922233341.

  2. Associate the preshared keychain name with the connectivity association.

  3. Set the trace option values.

  4. Assign the trace to an interface.

  5. Configure the MACsec security mode as static-cak for the connectivity association.

  6. Set the MKA key server priority.

  7. Set the MKA transmit interval.

  8. Enable the MKA secure.

  9. Assign the connectivity association to an interface.

  10. Configure VLAN tagging.

  11. Configure bridge domain.

Configure MACsec with Keychain for Layer 2 Traffic

Synchronize both MACsec endpoint devices to NTP as both device’s time should be the same for key start time triggers. To configure MACsec with keychain for Layer 3 traffic between device R0 and device R1:

In R0:

  1. Assign a tolerance value to the authentication key chain.
  2. Create the secret password to use. It is a string of hexadecimal digits up to 64 characters long. The password can include spaces if the character string is enclosed in quotation marks. The keychain's secret-data is used as a CAK.

    You can configure up to 64 keys. For example, you can refer the following keys:

    Use the prompt command to enter a secret key value. For example, the secret key value is 2345678922334455667788992223334123456789223344556677889922233341.

    You can configure up to 64 secret keys. For example, you can refer the following secret keys:

  3. Associate the preshared keychain name with the connectivity association.
  4. Set the trace option values.
  5. Assign the trace to an interface.
  6. Configure the MACsec security mode as static-cak for the connectivity association.
  7. Set the MKA key server priority.
  8. Set the MKA transmit interval.
  9. Enable the MKA secure.
  10. Assign the connectivity association to an interface.
  11. Configure VLAN tagging.
  12. Configure bridge domain.

In R1:

  1. Assign a tolerance value to the authentication key chain.

  2. Create the secret password to use. It is a string of hexadecimal digits up to 64 characters long. The password can include spaces if the character string is enclosed in quotation marks. The keychain's secret-data is used as a CAK.

    Use the prompt command to enter a secret key value. For example, the secret key value is 2345678922334455667788992223334123456789223344556677889922233341.

    You can configure up to 64 secret keys. For example, you can refer the following secret keys:

  3. Associate the preshared keychain name with the connectivity association.

  4. Set the trace option values.

  5. Assign the trace to an interface.

  6. Configure the MACsec security mode as static-cak for the connectivity association.

  7. Set the MKA key server priority.

  8. Set the MKA transmit interval.

  9. Enable the MKA secure.

  10. Assign the connectivity association to an interface.

  11. Configure VLAN tagging.

  12. Configure bridge domain.