Re: [webmin-l] Strange issues with ICMP monitoring

[Eric T. <eri...@tr...>]

Sorry new to the list, but what are you running?
VirtualMin, Webmin, Cloudmin?

My first guess would be a fail2ban issue as that is a popular dictionary attack mitigation method, so a cluster of webmin servers with an incorrect password on one would cause this.

Sincerely,

Eric Tykwinski
TrueNet, Inc.
P: 610-429-8300

> On Dec 8, 2020, at 4:49 PM, Joaquim Homrighausen <jo...@we...> wrote:
> 
> 
> 
> So, this keeps happening even after upgrading the server to Ubuntu 20.04.1.LTS and Webmin 1.962.
> 
> While Webmin fails, access into the server using SSH works, as does the Webmin web interface, as does outbound network access (i.e. ping <remote host>, and so on). But Webmins internal ICMP/ping "checking code" does not.
> 
> If I re-boot the server, all is well.
> 
> Could it be the number of "ping monitors" (21) that's causing this ... ?
> 
> 
> 
> -joho
> 
> 
> 
> On 2020-11-10 20:29, Joaquim Homrighausen wrote:
>> I seem to have come across a really strange issue with ICMP monitoring or "Ping".
>> On a host running Webmin 1.960 and Ubuntu 18.04.LTS, I get error reports from *all* monitors of the type "Ping", indicating the monitor is down.
>> 
>> It only happens on this particular host.
>> 
> 
> -
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