Port won't Listen
I have 2 Linux box, AS 2.1 & AS 3. My AS 2.1 port 13782 is listening but my AS 3 is not. How do I troublshoot this networking issue?
dvong # telnet linuxas 13782 Trying 198.33.160.91... Connected to spain. Escape character is '^]'. Connection closed by foreign host. [root@Canada netbackup]# telnet carott 13782 Trying 198.33.160.90... telnet: Unable to connect to remote host: Connection refused [root@Canada netbackup]# |
check if service works in carrott box.
#netstat -a |grep tcp will show u net status for tcp ports. have a look if that service listens its port. if it s ok, check firewall configuration. |
Thanks for the reply. There are no port listed for 13782. I have no firewall setup on my Linux. Any more clues?
[root@Canada root]# netstat -a |grep tcp tcp 0 0 *:exec *:* LISTEN tcp 0 0 *:kshell *:* LISTEN tcp 0 0 *:32768 *:* LISTEN tcp 0 0 *:login *:* LISTEN tcp 0 0 *:8065 *:* LISTEN tcp 0 0 *:32769 *:* LISTEN tcp 0 0 *:nfs *:* LISTEN tcp 0 0 *:shell *:* LISTEN tcp 0 0 localhost.localdo:32777 *:* LISTEN tcp 0 0 *:9098 *:* LISTEN tcp 0 0 *:netbios-ssn *:* LISTEN tcp 0 0 *:909 *:* LISTEN tcp 0 0 *:sunrpc *:* LISTEN tcp 0 0 Carott:1808 *:* LISTEN tcp 0 0 *:x11 *:* LISTEN tcp 0 0 *:http *:* LISTEN tcp 0 0 Carott:1809 *:* LISTEN tcp 0 0 *:1521 *:* LISTEN tcp 0 0 Carott:oracle-em1 *:* LISTEN tcp 0 0 *:ftp *:* LISTEN tcp 0 0 *:ssh *:* LISTEN tcp 0 0 *:telnet *:* LISTEN tcp 0 0 localhost.localdoma:ipp *:* LISTEN tcp 0 0 localhost.localdom:smtp *:* LISTEN tcp 0 0 Canada:oracle-em2 *:* LISTEN tcp 0 0 *:bpjava-msvc *:* LISTEN tcp 0 0 *:890 *:* LISTEN tcp 0 0 *:https *:* LISTEN tcp 0 0 *:8060 *:* LISTEN tcp 0 0 *:microsoft-ds *:* LISTEN tcp 0 0 *:klogin *:* LISTEN tcp 0 0 localhost.localdoma:ipp localhost.localdo:32772 ESTABLISHED tcp 0 0 Carott:1521 Canada:32808 ESTABLISHED tcp 0 0 Carott::32808 Canada:1521 ESTABLISHED tcp 0 0 localhost.localdo:32772 localhost.localdoma:ipp ESTABLISHED tcp 0 48 Carott:ssh 199.33.100.139:3173 ESTABLISHED tcp 0 0 Carott:ssh 199.33.100.104:4822 ESTABLISHED tcp 0 0 Carott:ssh 199.33.100.104:4823 ESTABLISHED [root@Carott root] |
i had a look at /etc/services
[root@egemen root]# cat /etc/services |grep 13782 bpcd 13782/tcp # VERITAS NetBackup bpcd 13782/udp # VERITAS NetBackup your service works on tcp port? if its so your service doesnt work. have a look at logs. generally it says why it doesnt work. try to restart it. and check it by netstat and ps commands. #ps uax |
Yes, I have 13782 in my /etc/services. I found nothing in the log stating backup problem. I restart the service and even reboot the server, still not working and my "connection is still refuse (status 57)", vertias. My AS 2.1 had no problem but AS 3 is giving me headache.
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