Using Another Account as Internet Proxy Post: 302963764

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Special Forums IP Networking Using Another Account as Internet Proxy Post 302963764 by hicksd8 on Tuesday 5th of January 2016 04:38:42 PM

01-05-2016

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So your local servers are using the bank of purchased static ip's and are effectively directly on the internet?

If when trying to connect locally you are referencing a nodename, then that nodename will need to be resolved to an ip address. If your DNS service is external (and unreliable and perhaps provided by your ISP) then if it becomes unreachable every so often it would affect your local connectivity too. Just a thought at this early stage.

Do you know where your local nodes get their DNS settings from? Are they acquired through DHCP?

If the timeout is caused by DNS failure then setting local resolution through /etc/hosts file entries might help.

What O/S's are we talking about here?

---------- Post updated at 09:30 PM ---------- Previous update was at 09:21 PM ----------

Stating the obvious, LAN connections do not need any ISP or WAN involvement once the connection is established.

I may well be wrong but my experience would tell me to look at the DNS service reliability and/or the actual DNS settings and where they are acquired. This type of timeout connection issue bears all the hallmarks of a DNS screw up.

Let's hope we soon get other input from other forum members. There's probably questions that I've forgotten to ask.

---------- Post updated at 09:35 PM ---------- Previous update was at 09:30 PM ----------

You could configure another system on your LAN as an internet proxy server if you believe for some reason that it won't suffer the same issue. You'd then need to configure all your workstations to use that proxy (or autodetect that proxy).

---------- Post updated at 09:38 PM ---------- Previous update was at 09:35 PM ----------

You could interrogate your systems to see what primary DNS and secondary DNS server ip addresses they are using. Then set up a couple of machines to ping each of these continuously. See if they are still successfully pinging when the problem occurs or whether the DNS servers are unreachable at that time.

hicksd8

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ipa-dns-install

ipa-dns-install(1)						 IPA Manual Pages						ipa-dns-install(1)

NAME

       ipa-dns-install - Add DNS as a service to an IPA server

SYNOPSIS

       ipa-dns-install [OPTION]...

DESCRIPTION

       Adds DNS as an IPA-managed service. This requires that the IPA server is already installed and configured.

OPTIONS

       -p DM_PASSWORD, --ds-password=DM_PASSWORD
	      The password to be used by the Directory Server for the Directory Manager user

       -d, --debug
	      Enable debug logging when more verbose output is needed

       --ip-address=IP_ADDRESS
	      The IP address of the IPA server. If not provided then this is determined based on the hostname of the server.

       --forwarder=FORWARDER
	      A  forwarder  is a DNS server where queries for a specific non-resolvable address can be directed. To define multiple forwarders use
	      multiple instances of --forwarder

       --no-forwarders
	      Do not add any DNS forwarders, send non-resolvable addresses to the DNS root servers.

       --reverse-zone=REVERSE_ZONE
	      The reverse DNS zone to use

       --no-reverse
	      Do not create new reverse DNS zone. If used on a replica and a reverse DNS zone already exists for the subnet, it will be used.

       --zonemgr
	      The e-mail address of the DNS zone manager. Defaults to hostmaster@DOMAIN

       -U, --unattended
	      An unattended installation that will never prompt for user input

EXIT STATUS

       0 if the installation was successful

       1 if an error occurred

IPA
								   Jun 28, 2012 						ipa-dns-install(1)