Hi Walter,
Dropbear doesn't have IP restrictions built in. You could use
iptables/nftables, or tcpwrappers etc if you're running
Dropbear in inetd mode.
Cheers,
Matt
On Thu, May 20, 2021 at 01:23:28PM +, Walter Harms wrote:
> Hello List,
> actually i expected this would be a FAQ but i can no
isnt that a job for netfilter?
Am 20.05.2021 um 15:23 schrieb Walter Harms:
Hello List,
actually i expected this would be a FAQ but i can not find an answer:
How can i restrict the hosts that are allowed to access the
dropbear server ?
re,
wh
case i get something working ...
i am thinking about fnmatch and inet_ntoa would that be acceptable ?
re,
wh
Von: Dropbear im Auftrag von Sebastian Gottschall
Gesendet: Donnerstag, 20. Mai 2021 15:53
An: dropbear@ucc.asn.au
Betreff: Re: restrict access
On Thu, May 20, 2021 at 02:29:20PM +, Walter Harms wrote:
> Thx for the fast response,
> for the background: little system, far-far-away land, but some script-kiddie
> is filling the log ...
> so no iptables or other fancy stuff. Seems i have to change that, somehow.
>
> @matt:
> in case i g
what about a feature like blocking a client for N minutes if more than N
times of failed logins. its relativily easy to implement and lows down
brute force attacks
Am 20.05.2021 um 16:44 schrieb Matt Johnston:
On Thu, May 20, 2021 at 02:29:20PM +, Walter Harms wrote:
Thx for the fast resp
I've used successfully (well, at least I believe it's successful) sshblack (
http://www.pettingers.org/code/sshblack.html) to block those pesky robots
through iptables.
To get it to work correctly It's not as obvious as it seems... and there
are some limitations, but once you are familiar with it,
You can add some small code in svr_main.c for allowing/denying remote
servers based on their ip address
getaddrstring(&remoteaddr, &remote_host, NULL, 0);
/* HH hostallow start */
/* Check if remote host is allowed */
if (host
i know .but consider that this was not my request. i was just answering
a question and giving a suggestion.
so i have no intentions to implement this on my side
Am 21.05.2021 um 16:56 schrieb Hans Harder:
You can add some small code in svr_main.c for allowing/denying remote
servers based on th
Walter Harms wrote in
:
|I did a little experiment and it worked.
|
| if (fnmatch("192.168.1.*",remote_host,FNM_PATHNAME) != 0)
| goto out;
|
|this will allow only connections from 192.168.1.* to the server
|that shows the change can be very simple. I did not try with more compli\
|c
hem) on your embedded system, this is clearly an
> option.
>
> re,
> wh
>
> Von: Steffen Nurpmeso
> Gesendet: Dienstag, 25. Mai 2021 02:40:50
> An: Walter Harms
> Cc: dropbear@ucc.asn.au
> Betreff: Re: restrict access
>
Hans Harder wrote in
:
|or when you have no root access...
You will not make it through. \o/
--steffen
|
|Der Kragenbaer,The moon bear,
|der holt sich munter he cheerfully and one by one
|einen nach dem anderen runter wa.ks himself off
|(By Robert Gernhardt)
On Wed, Mar 21, 2007 at 06:17:48PM +0800, Moritz wrote:
> Is there a possibility to let only certain hosts connect to the dropbear
> server?
> Sounds quite simple, am I missing something?
Not currently. For just blocking/allowing by IP, you could
run using inetd and host.allow/host.deny, or use i
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