Weve always monitored ssh on our linux and unix hosts since if ssh goes down its a good indication something has gone very wrong but the windows machine historically have not had something like this. Port search going through 4 library database, total number of records are about 22000 in 3 times more that in other service. Lower reliability on rare occasions udp can be less reliable that tcp. On this page you can find tools for search tcp port numbers and udp port numbers. There has even been an option whether to prefer udp or tcp. I have checked each server and confirmed that port 12489 is open and bound to the right nic. Torrents switch to udp and why the sky isnt falling. Solved installed nrpe on nagios port 5666 connect refused by jbruyet thu jul 31, 2014 4. Afghan hound quote of the day daemon project is a tcpudp quoteoftheday server. Tcp port 5666 uses the transmission control protocol. May i know which tcp and udp port used by utorrent. For example you could check a dns or game server for availability from.
Simple shell script that uses nmap utility to check if a remote host is listening on a udp port and what that service is. Is anyone monitoring rdp on your various windows boxes by having nagios do a tcp check against tcp port 3389. Soon to be implemented updates will include checking of starttls vulnerabilities and udp connections. This is a list of internet socket port numbers used by protocols of the transport layer of the internet protocol suite for the establishment of hosttohost connectivity originally, port numbers were used by the network control program ncp in the arpanet for which two ports were required for halfduplex transmission. All other servicemarks and trademarks are the property of their respective owner. Real time live system such as chatting,broadcasting videos and you tube video buffering are using udp port. Monitoring tcpudp ports with nagios xi nagios library. Nagios xi nagios log server nagios network analyzer nagios fusion.
I am a new nagios user and trying to setup nagios client on one of the servers in dmz. You only can specify the warning and critical value. Ports those registered with iana are shown as official ports. Currently my company need to transfer files to clients by using torrent. When i test with nagios via command line i get no warning message. Tcp enables two hosts to establish a connection and exchange streams of data. This video describes the easytoconfigure wizard to select ports to monitor via tcpudp, including the ability to send a string of text to the port and verify you receive the expected string back. Unrated last updated by tlea on wed, jul 19, 2017 at 3. Guaranteed communication over tcp port 2697 is the main difference between tcp and udp. Through a nagios plugin, you can now validate whether your tcp services are vulnerable to the bug with both tlsv1. Afghan hound quote of the day daemon uses both tcp and udp port 17 to return a random quote from fortune6 style quote files. Microsoft system center operations manager scom formerly microsoft operations manager mom agent. List of tcp and udp port numbers this is a list of notable port numbers used by protocols of the transport layer of the internet protocol suite for the establishment of hosttohost connectivity. Current service contain the biggest tcp udp port list.
This is a list of tcp and udp port numbers used by protocols of the internet protocol suite for operation of network applications the transmission control protocol tcp and the user datagram protocol udp needed only one port for fullduplex, bidirectional traffic. From the nagios server i can ping the terminal server but when i nmap it by ip address, all ports except for 3389 are filtered. This video tutorial will demonstrate how to monitoring tcp and udp ports in nagios xi, via the monitor tcpudp wizard. The port mappings are symmetrical, the port the tcp connection listens on is the same as the udp port. Udp port 2697 would not have guaranteed communication as tcp. Its easy just create an account, login, and add a new listing. Tcp ports use the transmission control protocol, the most commonly used protocol on the internet and any tcp ip network. This video tutorial will demonstrate how to monitoring tcp and udp ports in nagios xi, via the monitor tcp udp wizard.
Nagios no route to host on centos i initially had a problem with ssh keyexchange, but that has been solved, and im still receiving a no route to. Final thoughts for any support related questions please visit the nagios support forums at. As i gone through the tcp and udp architecture i can understand that udp is very faster than tcp. The hosts or services behind the gateway should depend on the gateway box. This can be solved by defining dependencies in nagios. Tcp is one of the main protocols in tcpip networks. The stream control transmission protocol sctp and the datagram congestion control protocol dccp. Port 5666 are opened and i can connect to it on both server and client machines telnet localhost 5666 got me connected the server does not have any iptables rules. Tcp and udp generic nagios plugins for monitoring generic tcpudp services.
Snmp can actually support more than just tcpip also appletalk and ipx but tcpip s is the only thing ill talk about with tcpip it uses udp as a transport layer. And there was a open port check tool, which checked for both udp or tcp. Not without an example host, service and command definition. Tcpudp port elenco di tutte le porte tcp e udp e dei. Port 5666 tcp nrpe nagios unofficial unencrypted app risk 4 packet captures edit improve this page. Unofficial unencrypted app risk 4 packet captures edit improve this page nsclient agent for nagios. Udp port 5666 would not have guaranteed communication as tcp. Hi i have configure nagios on redhat 4 nagios version 3. Tcpudp port elenco di tutte le porte tcp e udp e dei relativi servizi. Guaranteed communication over tcp port 5666 is the main difference between tcp and udp. For this reason it is the preferred protocol when streaming hd videos or downloading torrentsp2p. Only when a connection is set up users data can be sent bidirectionally over the connection. I need to know that to let the clients to inform their network team to open specific tcp port and udp port to allow them to download files. It listens on events ports between 5000 and 5048 inclusive.
This small java program receives tcp connections and retransmits the data to localhost udp. This document is intended to provide nagios network admins with the ports they need. Port 161 is used for most monitoring and configuration requests. Udp on port 2697 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. Udp on port 5666 provides an unreliable service and datagrams may arrive duplicated, out of order, or missing without notice. But no matter what rules i put there it does not work. No firewall is installed on the server and tcpip filtering on the nics is not enabled. Check udp connection to any port of any ip or website from different places. Capture icmp, arp, udp, tcp packets we can capture various different protocol traffic with tcpdump command, below are commands for some of them. Which protocol is using for downloading torrent files. Page 7 14 updated october, 2017 nagios xi the industry standard in infrastructure monitoring. Tcp guarantees delivery of data and that packets will be delivered in the same order in which they were sent. Faster speed udp vpn service offers significantly greater speeds than tcp. I opened tcp port and the transmission plainly says the port is open.
Tcp ports use the transmission control protocol, the most commonly used protocol on the internet and any tcpip network. Will an opened udp port accelerate torrenting using transmission. Preferred udp vpn tunnels are the preferred openvpn connection method if your network supports it. Nrpe nagios nrpe nagios 159 position 1 contributor 5,984 views tags. Nsclient was originally designed as a monitoring agent and client for the well known and used network monitoring software nagios. Nagios cant connect to port 12489 on terminal server. Help build nagios exchange for yourself and the entire the nagios community by your nagios project to the site. Although, it sounds like the greater problem youre trying to solve is to not alert for the hosts behind the gateway when the gateway is unreachable. My question is which ports do i need to open in the firewall so that nagios client running on dmz server can communicate with nagios server on the inside lan and viceversa.
Tcp and udp generic nagios plugins for monitoring generic tcp udp services. The nagios server resides on the inside lan and it works fine with all other lan servers. The same port number may be unofficialy used by various services or applications. Monitoring tcpudp ports with nagios xi in this tutorial we will cover how to monitor common tcpudp ports in nagios xi. The internet assigned numbers authority iana has the below description on file for port 3998 and this is current as of.
All we can say at this point is what youre running on the command line is not what youve told nagios to run. Nagios, the nagios logo, and nagios graphics are the servicemarks, trademarks, or registered trademarks owned by nagios enterprises. Form the server i cannot telnet on port 5666 telnet localhost 5666. Tcp is a connectionoriented protocol, it requires handshaking to set up endtoend communications.
1542 727 1507 287 529 546 1137 340 1027 727 1014 768 1086 1347 691 173 927 1544 200 736 1299 891 1160 1309 772 1434 580 1384 52 1418 881 7