[CGI] Planned Update to TLS Cipher Configurations [SCHEDULED]

Scheduled for Oct 15, 09:00 - 23:00 CEST

Scheduled

Dear Customer/Partner,

We would like to inform you about a scheduled update to the TLS cipher configurations on our web infrastructure. This update will affect the following API endpoints used for sending SMS, WhatsApp, address lookup and managing configurations such as gates and keywords:

n-eu.linkmobility.io
c-eu.linkmobility.io
s-eu.linkmobility.io
http://wsx.sp247.net

Effective Date: October 15, 2025

As part of this update, support for the following legacy TLS 1.2 ciphers will be discontinued on 2025-10-15:
TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 (0x9e)
TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 (0x9f)
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 (0xc028)
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 (0xc027)
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (0xc013)
TLS_RSA_WITH_AES_256_CBC_SHA256 (0x3d)
TLS_RSA_WITH_AES_128_CBC_SHA256 (0x3c)

Please note that TLS ciphers in version 1.2 will remain unchanged only for following:

TLS Ciphers
1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (0xc02f)
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (0xc030)
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 (0xcca8)

Please note that TLS ciphers in version 1.3 will not be changed and remain as below:

TLS Ciphers
1.3 TLS_AES_128_GCM_SHA256 (0x1301)
TLS_AES_256_GCM_SHA384 (0x1302)
TLS_CHACHA20_POLY1305_SHA256 (0x1303)

Impact:

No downtime is expected during this update.

Existing supported cipher configurations (TLS 1.2 excluding the ones mentioned above and TLS 1.3) will remain available until the cutoff date.

We strongly recommend that all clients migrate to TLS 1.3 to ensure optimal performance and security.

Important Notice: If your systems currently rely on any of the deprecated ciphers listed above, please update your configuration before October 15, 2025, to avoid connectivity issues.

Need Assistance?

If you require assistance or would like to test the updated cipher compatibility in advance, please contact your local support representative.

Thank you for your attention and cooperation.
Posted Jul 04, 2025 - 15:06 CEST
This scheduled maintenance affects: CGI (API n-eu.linkmobility.io, API c-eu.linkmobility.io, API s-eu.linkmobility.io, API *.sp247.net).