Choose a TLS cipher strength

You can select a preferred level of encryption for TLS connections by choosing a cipher strength.

Cipher strength	Description
High	Uses a list of high grade ciphers with key-length larger than 128 bits, and some cipher suites with 128-bit keys. Some clients connecting through TLS might stop working when this cipher strength is used. If you experience problems with this option, use Medium.
Medium	Uses a list of ciphers with 128-bit encryption. This is the default option.
Any	Uses a cipher string that includes all ciphers but excludes those cipher suites that offer no authentication or are export-grade ciphers, which are typically weak. If you have an older TLS client, you may need to use this option instead of Medium.

Cipher strength

Description

High

Uses a list of high grade ciphers with key-length larger than 128 bits, and some cipher suites with 128-bit keys.

Some clients connecting through TLS might stop working when this cipher strength is used. If you experience problems with this option, use Medium.

Medium

Uses a list of ciphers with 128-bit encryption.

This is the default option.

Any

Uses a cipher string that includes all ciphers but excludes those cipher suites that offer no authentication or are export-grade ciphers, which are typically weak.

If you have an older TLS client, you may need to use this option instead of Medium.

To choose a TLS cipher strength:

Click System > Encryption > TLS Configuration.
Select the Settings tab.
In the Minimum cipher strength panel, click Click here to change these settings.
Select a cipher strength.
Click Save.
Apply the new configuration.

Choose a TLS cipher strength

See also...