I have been trying to set up printer sharing on the LAN.All machines are CentOS 5.2 fully updated. The problem server is a fresh build. The box it is replacing worked fine for many months. The problem appears to be a closed port 631 on the new box. iptables and ip6tables are stopped as shown by the output below. To confirm I was using nmap correctly I ran it against the old server first which shows 631 open. No matter what I do to the new box (192.168.2.205) 631 remains closed. I was running it on the new box via ssh which I think eleminates any swithc/router issues.
Any thoughts gladly accepted. This must be something simple/stupid I have overlooked. Not much hair left to pull out. ;-/
B.J.
[root@office bmcclure]# ssh 192.168.2.200 root@192.168.2.200's password: Last login: Sat Feb 21 17:39:51 2009 [root@fileserver ~]# nmap -sT -p 631 -PT 192.168.2.200
Starting Nmap 4.20 ( http://insecure.org ) at 2009-03-02 11:00 EST Interesting ports on 192.168.2.200: PORT STATE SERVICE 631/tcp open ipp
Nmap finished: 1 IP address (1 host up) scanned in 0.121 seconds [root@fileserver ~]# nmap -sT -p 631 -PT 192.168.2.205
Starting Nmap 4.20 ( http://insecure.org ) at 2009-03-02 11:01 EST Interesting ports on 192.168.2.205: PORT STATE SERVICE 631/tcp closed ipp MAC Address: 00:17:31:EC:0B:2D (Asustek Computer)
Nmap finished: 1 IP address (1 host up) scanned in 0.185 seconds [root@fileserver ~]# exit logout
Connection to 192.168.2.200 closed. [root@office bmcclure]# ssh 192.168.2.205 root@192.168.2.205's password: Last login: Mon Mar 2 06:52:36 2009 from house.keepertoad.com [root@webserver ~]# service iptables stop [root@webserver ~]# service ip6tables stop [root@webserver ~]# iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination
Chain FORWARD (policy ACCEPT) target prot opt source destination
Chain OUTPUT (policy ACCEPT) target prot opt source destination [root@webserver ~]# ip6tables -L Chain INPUT (policy ACCEPT) target prot opt source destination
Chain FORWARD (policy ACCEPT) target prot opt source destination
Chain OUTPUT (policy ACCEPT) target prot opt source destination [root@webserver ~]# nmap -sT -p 631 -PT 127.0.0.1
Starting Nmap 4.11 ( http://www.insecure.org/nmap/ ) at 2009-03-02 11:03 EST Interesting ports on localhost (127.0.0.1): PORT STATE SERVICE 631/tcp closed ipp
Nmap finished: 1 IP address (1 host up) scanned in 0.031 seconds [root@webserver ~]# service cups status cupsd (pid 6941) is running... [root@webserver ~]# nmap -sT -F -PT 127.0.0.1
Starting Nmap 4.11 ( http://www.insecure.org/nmap/ ) at 2009-03-02 11:09 EST Interesting ports on localhost (127.0.0.1): Not shown: 1233 closed ports PORT STATE SERVICE 22/tcp open ssh 25/tcp open smtp 111/tcp open rpcbind 443/tcp open https 636/tcp open ldapssl 2049/tcp open nfs
Nmap finished: 1 IP address (1 host up) scanned in 0.077 seconds
[root@webserver ~]#
CentOS 5.2, Linux 2.6.18-92.1.22.el5 x86_64 10:54:59 up 17:48, 1 user, load average: 0.34, 0.23, 0.09