Issue with Cisco ASA

Hi Yang,

I have issue trying to connect to my firewall, I get this error:

ASA_Inside_EtherChannel2.100

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Equivalent Command: ssh -vvv -o KexAlgorithms=+diffie-hellman-group1-sha1 -o HostKeyAlgorithms=+ssh-rsa -o ExitOnForwardFailure=yes -o ServerAliveInterval=15 -o ServerAliveCountMax=3 -p 22 jaraujo@172.10.20.1

03:41:47 Connecting…

03:41:47 Using Core Helper 6.6 (r3386)

03:41:47 OpenSSH_8.8p1, OpenSSL 1.1.1l 24 Aug 2021

03:41:47 debug1: Reading configuration data /Users/skyones/.ssh/config

03:41:47 debug1: Reading configuration data /etc/ssh/ssh_config

03:41:47 debug1: /etc/ssh/ssh_config line 21: include /etc/ssh/ssh_config.d/* matched no files

03:41:47 debug1: /etc/ssh/ssh_config line 54: Applying options for *

03:41:47 debug2: resolve_canonicalize: hostname 172.10.20.1 is address

03:41:47 debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts' -> '/Users/skyones/.ssh/known_hosts'

03:41:47 debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts2' -> '/Users/skyones/.ssh/known_hosts2'

03:41:47 debug3: ssh_connect_direct: entering

03:41:47 debug1: Connecting to 172.10.20.1 [172.10.20.1] port 22.

03:41:47 debug3: set_sock_tos: set socket 3 IP_TOS 0x48

03:41:47 debug1: Connection established.

03:41:47 debug1: identity file /Users/skyones/.ssh/id_rsa type -1

03:41:47 debug1: identity file /Users/skyones/.ssh/id_rsa-cert type -1

03:41:47 debug1: identity file /Users/skyones/.ssh/id_dsa type -1

03:41:47 debug1: identity file /Users/skyones/.ssh/id_dsa-cert type -1

03:41:47 debug1: identity file /Users/skyones/.ssh/id_ecdsa type -1

03:41:47 debug1: identity file /Users/skyones/.ssh/id_ecdsa-cert type -1

03:41:47 debug1: identity file /Users/skyones/.ssh/id_ecdsa_sk type -1

03:41:47 debug1: identity file /Users/skyones/.ssh/id_ecdsa_sk-cert type -1

03:41:47 debug1: identity file /Users/skyones/.ssh/id_ed25519 type -1

03:41:47 debug1: identity file /Users/skyones/.ssh/id_ed25519-cert type -1

03:41:47 debug1: identity file /Users/skyones/.ssh/id_ed25519_sk type -1

03:41:47 debug1: identity file /Users/skyones/.ssh/id_ed25519_sk-cert type -1

03:41:47 debug1: identity file /Users/skyones/.ssh/id_xmss type -1

03:41:47 debug1: identity file /Users/skyones/.ssh/id_xmss-cert type -1

03:41:47 debug1: Local version string SSH-2.0-OpenSSH_8.8

03:41:47 debug1: Remote protocol version 2.0, remote software version Cisco-1.25

03:41:47 debug1: compat_banner: match: Cisco-1.25 pat Cisco-1.* compat 0x60000000

03:41:47 debug2: fd 3 setting O_NONBLOCK

03:41:47 debug1: Authenticating to 172.10.20.1:22 as 'jaraujo'

03:41:47 debug1: load_hostkeys: fopen /Users/skyones/.ssh/known_hosts2: No such file or directory

03:41:47 Authenticating…

03:41:47 debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory

03:41:47 debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory

03:41:47 debug3: order_hostkeyalgs: no algorithms matched; accept original

03:41:47 debug3: send packet: type 20

03:41:47 debug1: SSH2_MSG_KEXINIT sent

03:41:47 debug3: receive packet: type 20

03:41:47 debug1: SSH2_MSG_KEXINIT received

03:41:47 debug2: local client KEXINIT proposal

03:41:47 debug2: KEX algorithms: curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,diffie-hellman-group1-sha1,ext-info-c

03:41:47 debug2: host key algorithms: ssh-ed25519-cert-v01@openssh.com,ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,sk-ssh-ed25519-cert-v01@openssh.com,sk-ecdsa-sha2-nistp256-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ssh-ed25519@openssh.com,sk-ecdsa-sha2-nistp256@openssh.com,rsa-sha2-512,rsa-sha2-256,ssh-rsa

03:41:47 debug2: ciphers ctos: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com

03:41:47 debug2: ciphers stoc: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com

03:41:47 debug2: MACs ctos: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1

03:41:47 debug2: MACs stoc: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1

03:41:47 debug2: compression ctos: none,zlib@openssh.com,zlib

03:41:47 debug2: compression stoc: none,zlib@openssh.com,zlib

03:41:47 debug2: languages ctos:

03:41:47 debug2: languages stoc:

03:41:47 debug2: first_kex_follows 0

03:41:47 debug2: reserved 0

03:41:47 debug2: peer server KEXINIT proposal

03:41:47 debug2: KEX algorithms: diffie-hellman-group1-sha1

03:41:47 debug2: host key algorithms:

03:41:47 debug2: ciphers ctos: aes128-gcm@openssh.com,aes256-ctr,aes256-cbc,chacha20-poly1305@openssh.com

03:41:47 debug2: ciphers stoc: aes128-gcm@openssh.com,aes256-ctr,aes256-cbc,chacha20-poly1305@openssh.com

03:41:47 debug2: MACs ctos: hmac-sha2-256

03:41:47 debug2: MACs stoc: hmac-sha2-256

03:41:47 debug2: compression ctos: none

03:41:47 debug2: compression stoc: none

03:41:47 debug2: languages ctos:

03:41:47 debug2: languages stoc:

03:41:47 debug2: first_kex_follows 0

03:41:47 debug2: reserved 0

03:41:47 debug1: kex: algorithm: diffie-hellman-group1-sha1

03:41:47 debug1: kex: host key algorithm: (no match)

03:41:47 Unable to negotiate with 172.10.20.1 port 22: no matching host key type found. Their offer:

03:41:47 Abnormal Disconnect

Let me know how can fix.
Thanks

Please try solution in this topic:

Yang