Hi Jerico! Remember in UDP-land checking if a port is open is a bit different. Since there are no nice things like SYNs and ACKs.
You could use another plugin (e.g. search check_udp_port on Nagios exchange - that uses nmap to check it, which checks for ICMP port unreachables). Or find some string to use (use tcpdump, netcat etc), but you may be falling down a rabbit hole. Even better, use a check_radius plugin? That talks Radius and then you don’t need to worry about anything ☺ Hope this helps Gareth From: Help [mailto:help-bounces+gareth.fletcher=onenet.co...@monitoring-plugins.org] On Behalf Of Jerico Rubion Sent: Monday, 2 November 2015 7:02 PM To: help@monitoring-plugins.org Subject: Usage of check_udp plugin Hello, Would like to inquire example of how to use this specific plugin. I used this command and nothing happened, ./check_udp -H <hostname> -p 1812 I want to monitor if port 1812 from Network Policy Server is listening, what should be the strings or settings that must be used in the argument of this command. Thank you -- Jerico M. Rubion | Systems Engineer | IT Office - Manila | ULLINK Ltd | Direct: +63 2-459-4858 | Mobile: +63178194868 | Email: jerico.rub...@ullink.com<mailto:jerico.rub...@ullink.com> | 5th Floor Multinational Bancorporation Centre | 6805 Ayala Avenue, Makati City, Philippines 1226 The information contained in or attached to this email is strictly confidential. If you are not the intended recipient, please notify us immediately by telephone and return the message to us.
