OK, here is tcpdump. Icinga server is "solexa-db" 192.168.160.10
NRPE is running on "solexa2" 192.168.160.12 Here are the results from the Icinga server [root@solexa-db sniff]# tcpdump -vv -i eth0 host 192.168.160.12 and dst port 5666 tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes 10:38:13.680397 IP (tos 0x0, ttl 64, id 29578, offset 0, flags [DF], proto: TCP (6), length: 60) solexa-db.39736 > solexa2.5666: S, cksum 0xe265 (correct), 1206902905:1206902905(0) win 5840 <mss 1460,sackOK,timestamp 531338227 0,nop,wscale 7> 10:38:13.680576 IP (tos 0x0, ttl 64, id 29579, offset 0, flags [DF], proto: TCP (6), length: 52) solexa-db.39736 > solexa2.5666: ., cksum 0x8945 (correct), 1206902906:1206902906(0) ack 90134794 win 46 <nop,nop,timestamp 531338227 1027801810> 10:38:13.680683 IP (tos 0x0, ttl 64, id 29580, offset 0, flags [DF], proto: TCP (6), length: 1088) solexa-db.39736 > solexa2.5666: P 0:1036(1036) ack 1 win 46 <nop,nop,timestamp 531338227 1027801810> and on the other system [root@solexa2 ~]# tcpdump -vv -i eth0 host 192.168.160.12 and dst port 5666 tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes 10:40:32.222219 IP (tos 0x0, ttl 64, id 10383, offset 0, flags [DF], proto: TCP (6), length: 60) solexa-db.39855 > solexa2.5666: S, cksum 0xff3c (correct), 1344156593:1344156593(0) win 5840 <mss 1460,sackOK,timestamp 531372862 0,nop,wscale 7> 10:40:32.222343 IP (tos 0x0, ttl 64, id 10384, offset 0, flags [DF], proto: TCP (6), length: 52) solexa-db.39855 > solexa2.5666: ., cksum 0x86af (correct), 1344156594:1344156594(0) ack 1327698309 win 46 <nop,nop,timestamp 531372862 1027940350> 10:40:32.222442 IP (tos 0x0, ttl 64, id 10385, offset 0, flags [DF], proto: TCP (6), length: 1088) solexa-db.39855 > solexa2.5666: P 0:1036(1036) ack 1 win 46 <nop,nop,timestamp 531372862 1027940350> >From this command : -bash-3.2$ /usr/lib/nagios/plugins/check_nrpe -n -H solexa2 -c check_users CHECK_NRPE: Error receiving data from daemon. But something tells me the above tcpdumps are not getting the whole conversation. -- “Don't eat anything you've ever seen advertised on TV” - Michael Pollan, author of "In Defense of Food" ------------------------------------------------------------------------------ Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox _______________________________________________ icinga-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/icinga-users
