Nagios Support Forum

I have a rhel 6 server with Nagios installed. It's all happy. On the server I can bring up the web interface, login, change pages and it's all fine. When I try to access the web interface remotely though it prompts for a username/password and then hangs. It eventually gives a

Some Background
- selinux and iptables are not running on the server (I'm on a closed network, I turned them off for testing anyway)
- I'm not using SSL and have not changed default ports or anything
- httpd is ok. I have some other web based tools installed and they are all fine both via the server and remotely.
- the username/password is ok as I can use the same details on the server to access the web interface
- rhel 6.5
- Nagios 4.3.4
- Apache 2.2.15
- I can't really update the apache or rhel version.

When I try to connect to either the hostname or ip, the status line shows 'waiting for response from <hostname> and then after a few minutes it throws the following into the httpd error log file

[error] [client myip ] Invalid method in request

Does anyone have any idea what 'the invalid method' might be? Suggestions for how to dig further? Use a browser on the server and it works perfectly.

Could you post your httpd error logs? (You can wrap this output in "code" blocks to make it easier for us to read. Thanks!) Along with the output of curl and wget towards your nagios server.
Thanks!

I'm afraid that although I have admin rights on the server, I don't have access to curl, wget etc on remote clients where I'm trying to run explorer/chrome to the nagios admin page.

The admin page looks fine when I run firefox on the server. On the remote windows client is just hangs at 'waiting for server...' for ages and then fails. I tried from another Linux host

There is nothing in the httpd error log file, nothing in the messages file.

I think it's maybe somethiing being blocked by a network firewall (not on the server, selinux and iptables off) but it's odd because I do get the username/password page. It's the authentication that doesn't get through.

Does it use any other port other than http to communicate with the admin console that might be getting blocked?

villager wrote:Does it use any other port other than http to communicate with the admin console that might be getting blocked?

No it does not.

You mentioned

villager wrote:but it's odd because I do get the username/password page

Is this Nagios Core or Nagios XI? Because you posted in the Core forum, but only Nagios XI has a login page