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I am trying to enable remote printing from my wifes computer through mine.
The machines can communicate with each other via ping, arping, ssh and rsync.
They can also communicate with the internet. Software on both machines is
kept up to date via YUM.
Using the RedHat-printer-config GUI in both machines, I have set sharing to
permit browsing to all hosts and to automatically find remote shared queues.
According to ps -ax | grep cups, Cupsd is running on both machines and nmap
shows port 631 open on both.
Yet my wifes machine (sender) gives me this error when I try to run the cups
test page.
lpr: unable to print file: server-error-service-unavailable
and tcpdump on my machine (acting as print server) shows contact as follows:
tcpdump | grep ecclesiastes
12:08:10.429247 elisha.organic-earth.com.ipp >
ecclesiastes.organic-earth.com.32980: P 62:346(284) ack 405 win 6432
<nop,nop,timestamp 135190292 198709> (DF)
12:08:10.429240 ecclesiastes.organic-earth.com.32980 >
elisha.organic-earth.com.ipp: . ack 62 win 5840 <nop,nop,timestamp 198709
135190292> (DF)
12:08:10.429405 ecclesiastes.organic-earth.com.32980 >
elisha.organic-earth.com.ipp: . ack 346 win 6432 <nop,nop,timestamp 198709
135190292> (DF)
12:08:14.236853 ecclesiastes.organic-earth.com.32981 >
elisha.organic-earth.com.ipp: S 565329688:565329688(0) win 5840 <mss
1460,sackOK,timestamp 199090 0,nop,wscale 0> (DF)
12:08:14.236930 elisha.organic-earth.com.ipp >
ecclesiastes.organic-earth.com.32981: S 650880344:650880344(0) ack 565329689
win 5792 <mss 1460,sackOK,timestamp 135190673 199090,nop,wscale 0> (DF)
(the end of which is:
11048 packets received by filter
9450 packets dropped by kernel
7903 packets received by filter
3492 packets dropped by kernel )
I don't understand the above at all. Normally I get zero drops.
My current best guess is that there is some error in my cups config on the
print server machine but it is -only- a guess. Before I waste additional
hours mucking about, can anyone shed any light on what is going on here?
Bill
- --
http://cannaday.us (genealogy)
http://organic-earth.com (organic gardening)
Uptimes below for the machines that created / host these sites.
11:56:00 up 15 days, 15:19, 4 users, load average: 0.10, 0.20, 0.21
11:51:00 up 75 days, 16:03, 7 users, load average: 0.00, 0.00, 0.00
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