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Any Linux Gurus On FR?
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| 1/24/2016
| Self
Posted on 01/24/2016 4:32:58 PM PST by Washi
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1
posted on
01/24/2016 4:32:58 PM PST
by
Washi
To: ShadowAce
2
posted on
01/24/2016 4:42:05 PM PST
by
conservatism_IS_compassion
('Liberalism' is a conspiracy against the public by wire-service journalism.)
To: Washi; rdb3; Calvinist_Dark_Lord; JosephW; Only1choice____Freedom; amigatec; Ernest_at_the_Beach; ..
![](http://i1185.photobucket.com/albums/z347/ShadowAce1800/Tech_Ping_1.png)
I'll take a look at our setup in the morning. We always use NTP and RHEL 6 VMs.
3
posted on
01/24/2016 4:42:43 PM PST
by
ShadowAce
(Linux - The Ultimate Windows Service Pack)
To: Washi
Can you explain why you need to authenticate NTP?
4
posted on
01/24/2016 4:43:09 PM PST
by
ShadowAce
(Linux - The Ultimate Windows Service Pack)
To: Washi
and you want that for FREE????
5
posted on
01/24/2016 4:49:19 PM PST
by
Nifster
(I see puppy dogs in the clouds)
To: Nifster
6
posted on
01/24/2016 4:51:29 PM PST
by
Washi
(All lives matter, or none do.)
To: ShadowAce; Washi
OK--forget the previous question. I was being annoying again.
I do have a couple of ideas. PM me to send me you current config and I should be able to troubleshoot it for you.
7
posted on
01/24/2016 4:52:22 PM PST
by
ShadowAce
(Linux - The Ultimate Windows Service Pack)
To: ShadowAce
Can you explain why you need to authenticate NTP? To prevent spoofing.
8
posted on
01/24/2016 4:53:04 PM PST
by
Washi
(All lives matter, or none do.)
To: Nifster
That's what open source is all about.
If you want to pay, you can do that too.
9
posted on
01/24/2016 5:00:55 PM PST
by
E. Pluribus Unum
("The goal of socialism is communism." -- Vladimir Lenin)
To: ShadowAce
I do have a couple of ideas. PM me to send me you current config and I should be able to troubleshoot it for you. Sent. Thank you.
10
posted on
01/24/2016 5:04:20 PM PST
by
Washi
(All lives matter, or none do.)
To: Washi
If you’re worried about spoofing, I kind of wonder if you are trying to use the wrong tool for the job. Depending on the environment, iptables (or syncing via hypervisor tools) is probably a much better tool.
But anyway, here’s a easy to follow explanation with examples:
http://www.articlesbase.com/programming-articles/how-to-configure-your-linux-ntp-server-1105782.html
As far as confirming operation, ntpq should (I think, working from memory here). If that’s not enough for you, break it intentionally and test.
11
posted on
01/24/2016 5:37:42 PM PST
by
Darth Reardon
(During the Great Depression, World War I was referred to as the Great War)
To: Washi
12
posted on
01/24/2016 5:39:20 PM PST
by
Vendome
(Don't take life so seriously-you won't live through it anyway - "Enjoy Yourself" ala Louis Prima)
To: Vendome
13
posted on
01/24/2016 5:45:00 PM PST
by
Washi
(All lives matter, or none do.)
To: Washi
14
posted on
01/24/2016 5:47:52 PM PST
by
Vendome
(Don't take life so seriously-you won't live through it anyway - "Enjoy Yourself" ala Louis Prima)
To: Darth Reardon
Thanks, Darth. That’s one of the articles I’ve read. There must be some trick I’m missing. My clients will sync right up with the server...which normally would be a good thing. However, when I intentionally use bad keys, it also syncs right up. It doesn’t appear that the clients are actually trying to authenticate the NTP messages.
15
posted on
01/24/2016 5:55:41 PM PST
by
Washi
(All lives matter, or none do.)
To: Washi
One more question--
Is this a new configuration? Is the current NTP server already serving up authenticated requests? If not, are you sure that the server is configured properly?
16
posted on
01/24/2016 5:56:19 PM PST
by
ShadowAce
(Linux - The Ultimate Windows Service Pack)
To: ShadowAce
It’s a new configuration on the Linux VMs.
The server is already serving authenticated NTP to other clients (Cisco switches and such). I’m just not a Linux guy.
17
posted on
01/24/2016 5:59:28 PM PST
by
Washi
(All lives matter, or none do.)
To: Washi
18
posted on
01/24/2016 6:13:21 PM PST
by
DataDink
To: Washi
Okay, you since you said you’re not a Linux guy in another post, I have to ask:
Are your clients running ntpd or using ntpdate? If ntpd, are what are you doing to cause it to re-read ntp.conf when you make changes to ntp.conf?
Oh, and how are you editing ntp.conf? On the linux machine, or on a windows machine and transferring to Linux?
19
posted on
01/24/2016 6:26:17 PM PST
by
Darth Reardon
(During the Great Depression, World War I was referred to as the Great War)
To: DataDink
Thanks, I’ll get one of my buddies with a subscription to access that for me tomorrow.
20
posted on
01/24/2016 6:27:01 PM PST
by
Washi
(All lives matter, or none do.)
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