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тАО01-28-2009 06:46 AM
тАО01-28-2009 06:46 AM
HP-UX SSH to Linux RH
Hi All,
I'm try to connect via ssh from HP-UX to RH and the connection hangs. Everithing was working but some times ago no more !!
SSH HP-UX -> RH
Using debug in SSH I see this :
But I can login in this way RH -> HP-UX.
Someone can help-me ?
10ks.
I'm try to connect via ssh from HP-UX to RH and the connection hangs. Everithing was working but some times ago no more !!
SSH HP-UX -> RH
Using debug in SSH I see this :
OpenSSH_4.1, OpenSSL 0.9.7e 25 Oct 2004
HP-UX Secure Shell-A.04.10.002, HP-UX Secure Shell version
debug1: Reading configuration data /opt/ssh/etc/ssh_config
debug3: Seeding PRNG from /opt/ssh/libexec/ssh-rand-helper
debug2: ssh_connect: needpriv 0
debug1: Connecting to XXX.XXX.XXX.XXX port 22.
debug1: Connection established.
debug1: identity file /home/roger/.ssh/id_rsa type -1
debug1: identity file /home/roger/.ssh/id_dsa type -1
ssh_exchange_identification: read: Connection reset by peer
But I can login in this way RH -> HP-UX.
Someone can help-me ?
10ks.
3 REPLIES 3
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тАО01-28-2009 07:05 AM
тАО01-28-2009 07:05 AM
Re: HP-UX SSH to Linux RH
if you are the administrator of both the HPUX and the RH boxes and changed absolutely nothing (as in a software upgrade or patching) and it stopped working for no reason at all, you should talk to the people who control your routers and firewalls. Connection reset by peer is usually indicative of your source IP address not being liked by the target server. Unless you did some ipchains modification on the target (RH) side and blocked some addresses accessing your server, I'd probably blame the firewall.
________________________________
UNIX because I majored in cryptology...
UNIX because I majored in cryptology...
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тАО01-28-2009 10:59 AM
тАО01-28-2009 10:59 AM
Re: HP-UX SSH to Linux RH
Was that all of the debug output of SSH, or did you omit something?
The connection is established, then rudely disconnected almost immediately afterwards. This quick disconnection might be caused by a tcpwrapper/libwrap -style access control at the application level. Firewalls usually just ignore the connection attempt ("drop the packet") and let the client time out by itself.
Examine the files /etc/hosts.allow and /etc/hosts.deny on the RH host. If the access is allowed/denied based on host names, verify that the RH host can resolve the hostname when given the IP address: this is called "reverse DNS lookup" and it is often overlooked in DNS server management.
To test it, run "nslookup HP.UX.IP.address" on the RH host and see if you can get back an answer that includes the name of the HP-UX host.
MK
The connection is established, then rudely disconnected almost immediately afterwards. This quick disconnection might be caused by a tcpwrapper/libwrap -style access control at the application level. Firewalls usually just ignore the connection attempt ("drop the packet") and let the client time out by itself.
Examine the files /etc/hosts.allow and /etc/hosts.deny on the RH host. If the access is allowed/denied based on host names, verify that the RH host can resolve the hostname when given the IP address: this is called "reverse DNS lookup" and it is often overlooked in DNS server management.
To test it, run "nslookup HP.UX.IP.address" on the RH host and see if you can get back an answer that includes the name of the HP-UX host.
MK
MK
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тАО01-28-2009 01:00 PM
тАО01-28-2009 01:00 PM
Re: HP-UX SSH to Linux RH
Shalom,
suspects:
1) Software upgrade/bug one side or the other
2) permissions problems on key .ssh files
3) Network firewall issues.
SEP
suspects:
1) Software upgrade/bug one side or the other
2) permissions problems on key .ssh files
3) Network firewall issues.
SEP
Steven E Protter
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
The opinions expressed above are the personal opinions of the authors, not of Hewlett Packard Enterprise. By using this site, you accept the Terms of Use and Rules of Participation.
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