Just a clarification on protocols...
I have confirmed that it's not just ssh that has a problem--it appears
to be all (which makes sense given the error msg, but just wanted to
confirm).
So to summarize:
- Upon boot, jg-laptop cannot talk to jg-tower.
- ssh dies with "No route to host"
- Printing via CUPS (port 631) hangs
- Presumably other protocols/ports are not accessible as well
- Attempting a connection from jg-tower to jg-laptop makes
connections from jg-laptop work properly
- telnet jg-laptop (I'm not running telnet, and this port is
blocked by firewall, but it still "kicks" jg-laptop)
- http://jg-laptop:631
- ssh jg-laptop
- Wait about 10 minutes, and jg-laptop can no longer talk to
jg-tower again
Glen Reesor wrote:
I'm
having a strange problem on my LAN....
I have two computers: jg-tower and jg-laptop. Upon initial boot,
here's what I see:
ssh jg-laptop to jg-tower Fails with "No route to host"
ssh jg-tower to jg-laptop Succeeds
Now, I can ssh jg-laptop to jg-tower
Here's the first interesting part: the connection from jg-tower to
jg-laptop can be via any protocol, even if blocked by jg-laptop's
firewall. For instance, trying to connect to jg-laptop:631 (which is
blocked by Guarddog on jg-laptop) will allow subsequent ssh from
jg-laptop to jg-tower to succeed.
Here's the second interesting part: do nothing on both computers for
~10 minutes and ssh from jg-laptop to jg-tower will fail again (No
route to host), until I try connecting from jg-tower to jg-laptop again.
On the surface, it appears that jg-laptop has no knowledge of jg-tower
unless it sees packets from it, and then forgets that routing info if
not used for ~ 10 minutes.
The configuration on both machines is identical:
- Both running wireless, configured via network-manager-kde
- Output from "route" shows the same thing on both computers
- Both computers are connected to my wireless router
- Both computers can connect to internet hosts via http
- Both computers are running Guarddog, which allows ssh from
hosts
on my local network
Any help would be greatly appreciated!
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