SSH no se puede establecer la autenticidad de

No tengo control sobre el server y, por lo tanto, no puedo hacer lo que esta respuesta recomienda. Ya he seguido lo que este par de preguntas / respuestas ya recomienda.

Mi bash simple de ssh falla con "Falló la verificación de la key de host":

 $ ssh -v git@git.assembla.com OpenSSH_5.9p1 Debian-5ubuntu1, OpenSSL 1.0.1 14 Mar 2012 debug1: Reading configuration data /home/josvic/.ssh/config debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 19: Applying options for * debug1: Connecting to git.assembla.com [64.250.188.42] port 22. debug1: Connection established. debug1: identity file /home/josvic/.ssh/id_rsa type 1 debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048 debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048 debug1: identity file /home/josvic/.ssh/id_rsa-cert type -1 debug1: identity file /home/josvic/.ssh/id_dsa type -1 debug1: identity file /home/josvic/.ssh/id_dsa-cert type -1 debug1: identity file /home/josvic/.ssh/id_ecdsa type -1 debug1: identity file /home/josvic/.ssh/id_ecdsa-cert type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.9p1 Debian-5-assembla debug1: match: OpenSSH_5.9p1 Debian-5-assembla pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.9p1 Debian-5ubuntu1 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: sending SSH2_MSG_KEX_ECDH_INIT debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: Server host key: ECDSA b7:7a:ad:9f:57:6f:ec:19:56:60:62:18:32:7a:8c:1b The authenticity of host 'git.assembla.com (64.250.188.42)' can't be established. ECDSA key fingerprint is b7:7a:ad:9f:57:6f:ec:19:56:60:62:18:32:7a:8c:1b. Are you sure you want to continue connecting (yes/no)? Host key verification failed 

¿Alguna idea?

Debe agregar la huella digital de la key del server al file de keys de confianza. Simplemente conéctese a ese server con el cliente ssh y escriba 'sí' cuando le pregunte sobre la key. O bien, edite el file trusted_keys manualmente.