By default, a new install of NLS adds port 5544 to /etc/sysconfig/iptables using TCP transport. Yet documentation says that the "default syslog has a type conversion 'syslog.' This is going to label any logs coming in from UDP or TCP on port 5544 as syslog..."
Note that UDP traffic is dropped in iptables with the default configuration, so this statement is inaccurate.
NLS does bind to UDP port 5544 so if you open up the firewall to allow UDP traffic on port 5544, it will work as intended.
I consider this a bug and should be fixed, or else it's not a bug and documentation should be updated.
Firewall not updated to allow UDP traffic to 5544
Firewall not updated to allow UDP traffic to 5544
Last edited by dwhitfield on Mon Jun 26, 2017 3:17 pm, edited 1 time in total.
Reason: marking with green check mark
Reason: marking with green check mark
Eric Loyd • http://everwatch.global • 844.240.EVER • @EricLoyd
I'm a Nagios Fanatic! • Join our public Nagios Discord Server!
Re: Firewall not updated to allow UDP traffic to 5544
What OS is this on? Is this a 1.4.4 install? I just tested a fresh install on CentOS 6.8 and iptables had a line to open udp port 5544.
As of May 25th, 2018, all communications with Nagios Enterprises and its employees are covered under our new Privacy Policy.
Re: Firewall not updated to allow UDP traffic to 5544
Likely this was from an OVA install from 2 years ago that's been updated to 1.4.4 in the interim.
If it's working from source install, that's great, but the OVA might need to be updated as well.
If it's working from source install, that's great, but the OVA might need to be updated as well.
Eric Loyd • http://everwatch.global • 844.240.EVER • @EricLoyd
I'm a Nagios Fanatic! • Join our public Nagios Discord Server!
-
dwhitfield
- Former Nagios Staff
- Posts: 4583
- Joined: Wed Sep 21, 2016 10:29 am
- Location: NoLo, Minneapolis, MN
- Contact:
Re: Firewall not updated to allow UDP traffic to 5544
The new OVA already has this fixed. This *was* a bug that has been fixed (although I don't know that it ever made it into the official internal bug tracker).
Ok, to go ahead and lock this one up?
Ok, to go ahead and lock this one up?
You do not have the required permissions to view the files attached to this post.
Re: Firewall not updated to allow UDP traffic to 5544
Yup yup. Thanks!
Eric Loyd • http://everwatch.global • 844.240.EVER • @EricLoyd
I'm a Nagios Fanatic! • Join our public Nagios Discord Server!