[OpenWrt-Devel] Fwd: Removing Telnet

Jakub Jančo kubco2 at gmail.com
Tue Sep 8 12:28:02 EDT 2015


Vittorio is right. Some seconds I got with disabling testing all my
public keys. I tried add dns to /etc/hosts, but no gain.

It waits where Vittorio wrote. I searched for disabling ciphers but
didnt found anything. Probably it cannot be done.

--
S pozdravom Jakub Janco


2015-09-08 18:00 GMT+02:00 Vittorio G (VittGam) <openwrt at vittgam.net>:
> Il 08.09.2015 17:42 Brent Thomson ha scritto:
>>
>> Slowness probably depends on hardware as well as all the possibilities
>> listed by others. I have a model of router that always takes 2-3
>> seconds to initiate an SSH connection, just to set up encryption
>> (brief, but computationally intensive; happens with every connection).
>> 10 seconds seems really slow, though. Smells like DNS.
>
>
> It might not be DNS in fact. On AR9331 (MIPS 24k CPU, not that fast...)
> starting from Barrier Breaker SSH is pretty slow (3-4 seconds), so on
> slower routers the login time can be longer.
>
> If you login with ssh -v, you can see that it waits between
>
>> debug1: expecting SSH2_MSG_KEXDH_REPLY
>
>
> and
>
>> debug1: Server host key: RSA [...]
>
>
> If you check the CPU usage on the router while the client is waiting for
> the reply, you can see that dropbear is at 100%.
>
> Cheers,
> Vittorio
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