Hunv
(Kristian Reukauff)
April 22, 2016, 11:08am
1
Hi,
I try to create a hostgroup for firewall rules.
First I added the hosts at the “Hosts”-Tab.
After that I switch to the “Host groups”-Tab and want to create a new Host Group like this:
When I click on Submit, I see this:
What the message wants me to do?
Nas
(Artem Fedai)
April 22, 2016, 11:26am
2
Hi, why on the second screen there are no Members?
Also please share Host page
Hunv
(Kristian Reukauff)
April 22, 2016, 11:33am
3
Here it is:
I don’t know why the members are missing after the “Submit”
Edit:
Problem exists with IE11 on Windows Server 2012 R2 and Chrome (latest) on Windows 10
Edit2:
It must have something to do with the hosts. I created another group with other hosts. That worked.
Hunv
(Kristian Reukauff)
April 22, 2016, 11:46am
4
OK, I got the Problem.
I cannot create Host Groups, with hosts, that have an underscore ( _ ) in the name.
Definitely a bug
If it is the GUI or the moduls behind the GUI, I don’t know
giacomo
(Giacomo Sanchietti)
April 22, 2016, 12:51pm
5
You’re right, this is an inconsistency of validator between pages
davidep
(Davide Principi)
April 22, 2016, 1:01pm
6
IIRC the “_” (underscore) is not allowed in hostnames
No longer true, RFC 2181 permits underscores in hostnames.
davidep
(Davide Principi)
April 22, 2016, 1:06pm
8
ok for DNS; I’m pretty sure also Linux allows an underscore in host name. @Hunv , what about Windows?
Hunv
(Kristian Reukauff)
April 22, 2016, 1:18pm
9
For NetBIOS:
Everything is allowed except /:*?"<>|
The Period (.) has a special function.
Underscore is allowed
For DNS:
Only Alphanumeric, minus (-) and period (.) (with special function).
Underscore is NOT allowed
and some more where it is OK and where it is not OK.
Because it is not OK for DNS: Don’t do it.
See:
https://support.microsoft.com/en-us/kb/909264
3 Likes
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