Configuring Cisco ASA5505 to connect to OPNsense

Minimum version required for IPSECv2 is v8.4 on the Cisco ASA

in v8.4

Available in v8.4

ESP:DES_CBC/HMAC_SHA1_96/NO_EXT_SEQ

from VPN/IPsec/Log from OPNsense

08[CFG] <con2|16> configured proposals: ESP:AES_CBC_128/HMAC_SHA1_96/NO_EXT_SEQ, ESP:AES_CBC_128/HMAC_SHA2_256_128/NO_EXT_SEQ, ESP:AES_CBC_128/HMAC_SHA2_384_192/NO_EXT_SEQ, ESP:AES_CBC_128/HMAC_SHA2_512_256/NO_EXT_SEQ, ESP:AES_CBC_128/AES_XCBC_96/NO_EXT_SEQ, ESP:AES_CBC_192/HMAC_SHA1_96/NO_EXT_SEQ, ESP:AES_CBC_192/HMAC_SHA2_256_128/NO_EXT_SEQ, ESP:AES_CBC_192/HMAC_SHA2_384_192/NO_EXT_SEQ, ESP:AES_CBC_192/HMAC_SHA2_512_256/NO_EXT_SEQ, ESP:AES_CBC_192/AES_XCBC_96/NO_EXT_SEQ, ESP:AES_CBC_256/HMAC_SHA1_96/NO_EXT_SEQ, ESP:AES_CBC_256/HMAC_SHA2_256_128/NO_EXT_SEQ, ESP:AES_CBC_256/HMAC_SHA2_384_192/NO_EXT_SEQ, ESP:AES_CBC_256/HMAC_SHA2_512_256/NO_EXT_SEQ, ESP:AES_CBC_256/AES_XCBC_96/NO_EXT_SEQ, ESP:AES_GCM_16_128/NO_EXT_SEQ, ESP:AES_GCM_16_128/NO_EXT_SEQ, ESP:AES_GCM_16_128/NO_EXT_SEQ, ESP:AES_GCM_16_128/NO_EXT_SEQ, ESP:AES_GCM_16_128/NO_EXT_SEQ, ESP:AES_GCM_16_192/NO_EXT_SEQ, ESP:AES_GCM_16_192/NO_EXT_SEQ, ESP:AES_GCM_16_192/NO_EXT_SEQ, ESP:AES_GCM_16_192/NO_EXT_SEQ, ESP:AES_GCM_16_192/NO_EXT_SEQ, ESP:AES_GCM_16_256/NO_EXT_SEQ, ESP:AES_GCM_16_256/NO_EXT_SEQ, ESP:AES_GCM_16_256/NO_EXT_SEQ, ESP:AES_GCM_16_256/NO_EXT_SEQ, ESP:AES_GCM_16_256/NO_EXT_SEQ, ESP:NULL/HMAC_SHA1_96/NO_EXT_SEQ, ESP:NULL/HMAC_SHA2_256_128/NO_EXT_SEQ, ESP:NULL/HMAC_SHA2_384_192/NO_EXT_SEQ, ESP:NULL/HMAC_SHA2_512_256/NO_EXT_SEQ, ESP:NULL/AES_XCBC_96/NO_EXT_SEQ