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New Member

Enabling SSH

Hi - I need to implement SSH on 2 3600 series roouters running IOS 12.3(9). I read a few Cisco articles and although it looks easy. I cannot get it working. The commands do not work that are int h e DOC.

Can someone let me know how this is done or disable SSH altogether

Any help would be appreciated.


Hall of Fame Super Silver

Re: Enabling SSH

Hello DJ Stanley,

support of SSH depends on the specific feature set the IOS image is part of

if you post

sh ver | inc image

it will be possible to check if SSH is supported on your current IOS image

Hope to help


Re: Enabling SSH

Hi Stanley

To enable SSH on router you can run the below command also.

ip http secure server


Chetan kumar

Re: Enabling SSH


The command you're referring to is to enable HTTPS on the router (not SSH).

To enable SSH first look you have a k8 or k9 image.

Please post the output of ''sh ver''


Re: Enabling SSH

Hi Federico

Please try this command with k9 image & let us know the output.

It work for both HTTPS & SSH.

& If any issue let us know .


Chetan kumar

New Member

Re: Enabling SSH

Looks like this doesn't support. Anyway just to disable telnet. I don't really want to have to upgrade

the IOS on the 3 routers since there is always the possibility that it could go south.

SC3640-2#sh ver
Cisco Internetwork Operating System Software
IOS (tm) 3600 Software (C3640-IS-M), Version 12.3(9d), RELEASE SOFTWARE (fc2)
Technical Support:
Copyright (c) 1986-2005 by cisco Systems, Inc.
Compiled Fri 01-Apr-05 10:15 by dchih
Image text-base: 0x60008B00, data-base: 0x61BB8000

ROM: System Bootstrap, Version 11.1(20)AA2, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)
ROM: 3600 Software (C3640-IS-M), Version 12.3(9d), RELEASE SOFTWARE (fc2)

PSC3640-2 uptime is 28 weeks, 20 hours, 49 minutes
System returned to ROM by power-on
System image file is "flash:c3640-is-mz.123-9d.bin"

cisco 3640 (R4700) processor (revision 0x00) with 111616K/19456K bytes of memory.
Processor board ID 28724399
R4700 CPU at 100MHz, Implementation 33, Rev 1.0
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
4 FastEthernet/IEEE 802.3 interface(s)
DRAM configuration is 64 bits wide with parity disabled.
125K bytes of non-volatile configuration memory.
32768K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

Hall of Fame Super Silver

Re: Enabling SSH

Hello DJ,

as Federico has correctly noted in the filename there should some special character to indicate SSH support

in your case the filename is



: IP subset (SNMP, IP, Bridging, WAN, Remote Node, Terminal Services)

s: (NAT, IBM, MMP, VPDN/L2F) In 11.3T added VOIP

if there was a k8 or k9 or kn with n>=4 SSH support would be present

Hope to help


Re: Enabling SSH

If you still didn't find a solution you might check this tutorial;