[Info-vax] Facebook service outage

[Stephen Hoffman]

On 2021-10-05 12:10:34 +0000, Simon Clubley said:

> On 2021-10-04, Stephen Hoffman <seaohveh at hoffmanlabs.invalid> wrote:
>> 
>> I haven't been able to get to Eisner for a while, but haven't bothered  
>> to dig into the details.
>> 
>> $ dig +short eisner.decuserve.org
>> 216.41.237.174
>> $ dig +short decuserve.org
>> 184.168.131.241
>> $
>> 
> 
> I'm using eisner.decus.org to connect to Eisner, which gives the same 
> IP address as your first example.
> 
>> ssh: connect to host eisner.decuserve.org port 22: Connection refused
>> 
>> Local ssh here is OpenSSH_8.1p1, LibreSSL 2.7.3.
>> 
> 
> Do you have any local manual host name table entries for that domain 
> name which point to a different IP address ?

While Eisner DNS has been scattershot for a while and some of the older 
entries now go to a corporate web login portal, if I'm getting the same 
IP address translations as you are, then I'm not hitting a difference 
caused by local DNS services or by local hosts entries.

> What happens when you try ping ?

ping pings.

traceroute:
...
 8  ip4.gtt.net (208.116.129.178)  21.771 ms  21.776 ms  21.781 ms
 9  216.41.236.33 (216.41.236.33)  23.490 ms  23.559 ms  23.314 ms
10  216.41.236.122 (216.41.236.122)  23.417 ms  23.516 ms  23.391 ms
11  216.41.236.122 (216.41.236.122)  24.949 ms  24.593 ms  24.554 ms
$ dig +short eisner.decus.org
216.41.237.174
$

With OpenVMS access adjustments:

$ ssh -vvvvv -o HostKeyAlgorithms=ssh-rsa,ssh-dss -o 
KexAlgorithms=diffie-hellman-group1-sha1 -o Ciphers=aes128-cbc,3des-cbc 
-o MACs=hmac-md5,hmac-sha1 hoffman at eisner.decus.org
OpenSSH_8.1p1, LibreSSL 2.7.3
debug1: Reading configuration data /Users/hoffman/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 47: Applying options for *
debug1: Connecting to eisner.decus.org port 22.
ssh: connect to host eisner.decus.org port 22: Connection refused
$

Without:

$ ssh -vvvvv hoffman at eisner.decus.org
OpenSSH_8.1p1, LibreSSL 2.7.3
debug1: Reading configuration data /Users/hoffman/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 47: Applying options for *
debug1: Connecting to eisner.decus.org port 22.
ssh: connect to host eisner.decus.org port 22: Connection refused
$

For giggles:

$ ssh system at eisner.decus.org
ssh: connect to host eisner.decus.org port 22: Connection refused
$

Both config and ssh_config referenced above are currently entirely 
commented out.

As I'm getting rejected by the ssh server or seemingly something just 
ahead of the ssh server, that implies the ssh client and ssh server or 
the firewall don't want to play.

This all reeks of destination firewall settings or of related 
port-forwarding settings, too. Which is why I haven't bothered to 
pursue it.

VSI is porting OpenSSH, which will help with ssh support more generally.







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