Can we make IPSec VPN on Router 3825C

Unanswered Question
Jul 12th, 2012

Hi all.

Can we make IPSec VPN tunnel (Site to Site) on Cisco Router 3825C.

If we can, which IOS supports?

Pls help me to solve this problem.

Thanks to all.

Vinh Phan

I have this problem too.
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nkarthikeyan Fri, 07/13/2012 - 07:46

Yes... we can make...


The Cisco 3800 Series Module (AIM-VPN/SSL-3) can provide hardware-based  IPSec encryption services of 160 and 185 Mbps in the Cisco 3825 and 190  and 210 Mbps in the Cisco 3845 (IPSec IMIX and 1400-byte packets). 1

But make sure that your router is not C3825-NOVPN model.... NOvpn models have limited security features.....

for use make use of the security bundle......

Javier Portuguez Fri, 07/13/2012 - 13:49


Make sure your IOS includes cryptographic support (k9) and that the previous post is true.


Vinh Phan Le Tien Fri, 07/13/2012 - 22:19

Hi all.

Thanks for your respond.

But I can't find any IOS for Router 3825C support VPN.

When I use 3825 IOS, router can't run.

I read that they can only support SSL VPN with IOS 3825c-spservice. . .

Vinh Phan Le Tien Sun, 07/15/2012 - 18:25

Router#show version

Cisco IOS Software, 3800C Software (C3825C-SPSERVICESK9-M), Version 15.0(1)M8, RELEASE SOFTWARE (fc1)

Technical Support:

Copyright (c) 1986-2012 by Cisco Systems, Inc.

Compiled Thu 16-Feb-12 03:18 by prod_rel_team

ROM: System Bootstrap, Version 12.4(13r)T15, RELEASE SOFTWARE (fc1)

Router uptime is 1 minute

System returned to ROM by power-on

System image file is "flash:c3825c-spservicesk9-mz.150-1.M8.bin"

Last reload type: Normal Reload

This product contains cryptographic features and is subject to United

States and local country laws governing import, export, transfer and

use. Delivery of Cisco cryptographic products does not imply

third-party authority to import, export, distribute or use encryption.

Importers, exporters, distributors and users are responsible for

compliance with U.S. and local country laws. By using this product you

agree to comply with applicable laws and regulations. If you are unable

to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

If you require further assistance please contact us by sending email to

[email protected].

Cisco CISCO3825C/K9 (revision 1.2) with 488447K/35840K bytes of memory.

Processor board ID FGL161411MJ

6 FastEthernet interfaces

2 Gigabit Ethernet interfaces

DRAM configuration is 64 bits wide with parity enabled.

447K bytes of NVRAM.

126976K bytes of ATA System CompactFlash (Read/Write)

License Info:

License UDI:


Device#   PID                   SN


*0        CISCO3825C/K9         FGL161411MJ    

Configuration register is 0x2102

Hi Javier.

This is details of "show version" command.

Pls help me check.

Thanks and Best Regards,

Vinh Phan

Vinh Phan Le Tien Mon, 07/16/2012 - 18:32

Dear Javier.

Thanks for your support.

I checked with your IOS:


But it didn't work.

After that when I used IOS


It's now ok.

Notice that you can't use IOS c3825-.... for router 3825C/K9.

You must use IOS c3825c-...

Thanks all!

Best Regards,

Vinh Phan


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