Contents

Introduction

SSL ciphers used

Related Information

Related Cisco Support Community Discussions

Introduction

This document describes which SSL ciphers are in use with the Cisco Registered Envelope Service (CRES) in relation to the Cisco Email Security Appliance (ESA).

SSL ciphers used

Cipher Suites (SSL 3+ suites in server-preferred order; deprecated and SSL 2 suites at the end):

TLS_RSA_WITH_AES_128_GCM_SHA256 (0x9c) 128

TLS_RSA_WITH_RC4_128_SHA (0x5) WEAK 128

TLS_RSA_WITH_AES_256_GCM_SHA384 (0x9d) 256

TLS_RSA_WITH_AES_256_CBC_SHA256 (0x3d) 256

TLS_RSA_WITH_AES_256_CBC_SHA (0x35) 256

TLS_RSA_WITH_CAMELLIA_256_CBC_SHA (0x84) 256

TLS_RSA_WITH_AES_128_CBC_SHA256 (0x3c) 128

TLS_RSA_WITH_AES_128_CBC_SHA (0x2f) 128

TLS_RSA_WITH_CAMELLIA_128_CBC_SHA (0x41) 128

TLS_RSA_WITH_3DES_EDE_CBC_SHA (0xa) 112

Full information can be obtained at any time from SSL Labs: SSL Report: res.cisco.com (184.94.241.74)

Related Information

- Cisco Email Security Appliance - End-User Guides

- Technical Support & Documentation - Cisco Systems