topic Re: NTP server. in Network Security

NTP server.

mitang.prajapati — Mon, 11 Mar 2019 15:54:21 GMT

hi.

i want to create NTP server on ASA 5540 firewall, its work to synchronize to all my devise in network.

and if yes then tell me how i installed it on my asa.

Re: NTP server.

srue — Mon, 13 Jul 2009 16:25:41 GMT

ASA's cannot be NTP servers, only NTP clients.

Re: NTP server.

mitang.prajapati — Mon, 13 Jul 2009 17:27:52 GMT

ok then tell me what command i give to configure my ntp client i have windows ntp server.

Re: NTP server.

srue — Mon, 13 Jul 2009 17:34:30 GMT

on the asa:

asa(config)# ntp server x.x.x.x

Re: NTP server.

mitang.prajapati — Mon, 13 Jul 2009 17:42:14 GMT

after this command any required to set value.

Re: NTP server.

srue — Mon, 13 Jul 2009 17:45:34 GMT

use the "clock timezone" command to set the timezone. use "clock summertime" if you use daylight savings.

Re: NTP server.

mitang.prajapati — Mon, 13 Jul 2009 17:55:51 GMT

i had give this command

ntp server x.x.x.x

but after this its not synchronize with time.

now what i do ?

Re: NTP server.

mitang.prajapati — Mon, 13 Jul 2009 18:09:16 GMT

its shown me wrong time so what i do ?

and how i check that time is properly synchronize?

Re: NTP server.

srue — Mon, 13 Jul 2009 18:33:05 GMT

show ntp status

show clock

if it's not working, debug ntp.

can you ping the ntp server from the asa?

Re: NTP server.

mitang.prajapati — Mon, 13 Jul 2009 18:54:47 GMT

yes

i ping that server.but i got time differnce between server and asa. its around 5min.

Re: NTP server.

robertson.michael — Tue, 14 Jul 2009 13:23:22 GMT

Hi Mitang,

I had a similar issue at one point in the past--the ASA was not syncing properly with a Windows 2003 NTP server. I believe the ASA was reporting the NTP server as having a status of "insane".

I am not 100% positive, but I believe these are the instructions I followed to resolve this issue. Take a look at the section called "Configuring the Windows Time service to use an internal hardware clock":

http://support.microsoft.com/kb/816042/

Hope that helps.

-Mike