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тАО01-02-2006 10:45 AM
тАО01-02-2006 10:45 AM
We have a simple TCPIP setup with no
routing or DNS enabled.
I would like to be able to dynamically
block Telnet access from a particular host.
By "dynamic", I mean that most of the time
that host would be allowed connect, but
occassionaly for a few hours that host would
not be allowed to connect (preferably with
no host response at all).
Suggestions? Thanks
Solved! Go to Solution.
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тАО01-02-2006 10:53 AM
тАО01-02-2006 10:53 AM
Re: Blocking an IP address
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тАО01-02-2006 11:06 AM
тАО01-02-2006 11:06 AM
SolutionSET SERVICE Subtopic? /reject
SET
SERVICE
/REJECT
/REJECT {=[NO]HOSTS=(hosts) |=[NO]NETWORKS=(networks)
|=[NO]MESSAGE="text"] }
Optional. Default: No rejections if /ACCEPT is set to its default
(service all hosts).
o /REJECT=HOST=host denies host access to the service.
o /REJECT=NOHOST=host regrants host access to the service.
The following options are available.
Option Meaning
HOSTS=hosts Makes the service unavailable to the specified
hosts.
Maximum is 32.
Examples:
/REJECT=HOSTS=(host1_name,host2_name, host3_
address)
/REJECT=HOSTS=*
Maybe useful.
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тАО01-03-2006 01:38 AM
тАО01-03-2006 01:38 AM
Re: Blocking an IP address
Purely Personal Opinion
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тАО01-04-2006 01:46 AM
тАО01-04-2006 01:46 AM
Re: Blocking an IP address
Since VMS does no support the route prohibit command, I have tried and used the following syntax. Target IP to prevent access=192.168.1.1
TCPIP> set route 192.168.1.1 /gateway=127.0.0.1
TCPIP> set noroute 192.168.1.1 /noconfirm
This prevents the target IP access over the physical IP connection. I know it is not the most elegant of solutions, however it has been effective for us.
Don
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тАО01-04-2006 02:14 AM
тАО01-04-2006 02:14 AM
Re: Blocking an IP address
He did mention telnet, not all traffic ...
Wim
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тАО01-05-2006 01:47 AM
тАО01-05-2006 01:47 AM
Re: Blocking an IP address
I realize that he stated Telnet only. However, if it is the one client, perhaps blocking the one client "with out" bouncing all the rest of the connections might be an alternative solution.
I rather provide the solution I chose than keep to myself and not help someone else out who might be folling the thread.
Don
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тАО01-05-2006 05:49 AM
тАО01-05-2006 05:49 AM
Re: Blocking an IP address
from your Forum Profile:
I have assigned points to 290 of 315 responses to my questions.
This even includes 2004 threads.
Maybe you can find some time to do some assigning?
http://forums1.itrc.hp.com/service/forums/helptips.do?#33
Mind, I do NOT say you necessarily need to give lots of points. It is fully up to _YOU_ to decide how many. If you consider an answer is not deserving any points, you can also assign 0 ( = zero ) points, and then that answer will no longer be counted as unassigned.
Consider, that every poster took at least the trouble of posting for you!
To easily find your streams with unassigned points, click your own name somewhere.
This will bring up your profile.
Near the bottom of that page, under the caption ├в My Question(s)├в you will find ├в questions or topics with unassigned points ├в Clicking that will give all, and only, your questions that still have unassigned postings.
Thanks on behalf of your Forum colleagues.
PS. ├в nothing personal in this. I try to post it to everyone with this kind of assignment ratio in this forum. If you have received a posting like this before ├в please do not take offence ├в none is intended!
Proost.
Have one on me.
jpe
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тАО01-05-2006 05:57 AM
тАО01-05-2006 05:57 AM
Re: Blocking an IP address
I find Don's answer quite useful for this type of problem. And it depends as much on the exact problem of the original topic whether his answer in this case IS the solution, or not.
I would rather get 3 -more-or-less-appropriate answers, of which one hits the bull's eye, than NOT getting the answers, because my understanding and/or my wording of the problem were next exact enough!
just my EUR 0,02
Proost.
Have one on me.
jpe
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тАО01-06-2006 04:12 AM
тАО01-06-2006 04:12 AM
Re: Blocking an IP address
Surely routing is only applied to outgoing connections, so would not stop the incoming telnet connections?