topic Re: Cant connect using console port to ASA 5525 in Network Security

Cant connect using console port to ASA 5525

crange — Thu, 12 Dec 2024 17:58:53 GMT

Hi everyone,

I'm trying to connect to the ASA 5525-x using the console port but I'm getting the below error, I'm able to SSH to it but not console but I'm able to put user and password after that I get the error.

Re: Cant connect using console port to ASA 5525

MHM Cisco World — Thu, 12 Dec 2024 18:02:21 GMT

can you share asa config

MHM

Re: Cant connect using console port to ASA 5525

crange — Thu, 12 Dec 2024 18:17:12 GMT

Thanks MHM, Unfortunately I cant share the entire configuration but if there is a specific section that you want to check I can do it

Re: Cant connect using console port to ASA 5525

MHM Cisco World — Thu, 12 Dec 2024 18:30:57 GMT

did you config

aaa authc login serial ?

MHM

Re: Cant connect using console port to ASA 5525

crange — Thu, 12 Dec 2024 18:46:51 GMT

I was using TACACS to authenticate the access, I removed device from TACACS servers I mean I deregister it from ISE to allow LOCAL logging and it works but I'm not able to logging using the console port

Re: Cant connect using console port to ASA 5525

crange — Thu, 12 Dec 2024 18:51:06 GMT

should I modify aaa authetication enable console LOCAL?

Re: Cant connect using console port to ASA 5525

MHM Cisco World — Thu, 12 Dec 2024 18:55:44 GMT

it depend on which steps you access
i.e.

if you can to access to ASA and when you enter enable you stop then sure you need to change authc enable to check LOACL then TACACS server (which is not reachable)

if you can not access to ASA at all then it not issue of authc enable

MHM

Re: Cant connect using console port to ASA 5525

crange — Thu, 12 Dec 2024 19:02:15 GMT

I can access to it using SSH, but I can not using console port, I'm using putty, So I able to put user also put the password but after that I received too many authentication failures message, I'm using the same user and password that I use for SSH connection that means credentials are Ok.

Re: Cant connect using console port to ASA 5525

crange — Thu, 12 Dec 2024 19:16:01 GMT

what I'm trying to do is get console access through the console port

Re: Cant connect using console port to ASA 5525

Carlos Arturo Rangel — Thu, 12 Dec 2024 19:22:43 GMT

Should I add this line aaa authentication login console local?

Re: Cant connect using console port to ASA 5525

MHM Cisco World — Thu, 12 Dec 2024 19:50:45 GMT

console port is same as serial port, cisco use serial term and make engineer confuse.

let me check my notes and I will update you

thanks for waiting

MHM

Re: Cant connect using console port to ASA 5525

MHM Cisco World — Thu, 12 Dec 2024 19:56:39 GMT

it Putty issue I think,
to check remove and re-install putty and try again

MHM

Re: Cant connect using console port to ASA 5525

johnlloyd_13 — Fri, 13 Dec 2024 02:01:36 GMT

hi,

can you use/install other app, i.e. securecrt (paid) or teraterm (free)?

are you using a native rj45 to usb console? or using serial console with USB adapter?

can you also use another console cable?

Re: Cant connect using console port to ASA 5525

Carlos Arturo Rangel — Fri, 13 Dec 2024 12:08:28 GMT

HI john thanks, Im using serial console cable with USB adapter, I will try with SecureCRT

Re: Cant connect using console port to ASA 5525

Carlos Arturo Rangel — Fri, 13 Dec 2024 21:53:43 GMT

hey friend just to let you know that Once I use a different laptop I was able to connect to the firewall thanks

Re: Cant connect using console port to ASA 5525

Carlos Arturo Rangel — Fri, 13 Dec 2024 21:54:55 GMT

Hey john friend after use a different laptop I was able to connect to the firewall throught console port Thanks