Sshd problem

2005-06-21 Thread Philip Wege
Installed freebsd 5.3 , put the box on the local network , used ssh to
setup the box.

Changed ip address to public address and made the box live so to speak.
Ever since the ip was changed i am unable to ssh into the box , logs
show error : Fatal timeout before authentication could occur.

Things like Allow root login and all that was set because ssh was used
just after the ip change did this happen.

Is this a known issue that ssh stops working after an ip change or
anyone got nay ideas on this issue ?


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Re: Sshd problem

2005-06-21 Thread Olivier Nicole
 Changed ip address to public address and made the box live so to speak.
 Ever since the ip was changed i am unable to ssh into the box , logs
 show error : Fatal timeout before authentication could occur.

Did you, by any chance, used the IP from a previous box that was
already configured with SSH server?

In that case your ssh client would have the public key for the old
server in it's table of known hosts, and would find a missmatch with
the public key of the new server.

Olivier
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Re: Sshd problem

2005-06-21 Thread Casey Scott

Unfortunately, sshd remains bound to the IP it had when it started. This isn't 
an issue with FBSD, but with OpenSSH. I see this all the time on other 
UNIX/Linux boxes. A possible solution to it in the future would be to issue a 
HUP to sshd using nohup. 

e.g.  [EMAIL PROTECTED] nohup ifconfig xxx.xxx.xxx.xxx netmask xxx.xxx.xxx.xxx; 
killall -HUP sshd

Hope that helps

Casey

On Tuesday 21 June 2005 09:05 am, Philip Wege wrote:
 Things like Allow root login and all that was set because ssh was used
 just after the ip change did this happen.
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Re: Sshd problem

2005-06-21 Thread Philip Wege
You cant even ssh onto the server from itself , it still times out.
On Tue, 2005-06-21 at 14:12 +0700, Olivier Nicole wrote:
  Changed ip address to public address and made the box live so to speak.
  Ever since the ip was changed i am unable to ssh into the box , logs
  show error : Fatal timeout before authentication could occur.
 
 Did you, by any chance, used the IP from a previous box that was
 already configured with SSH server?
 
 In that case your ssh client would have the public key for the old
 server in it's table of known hosts, and would find a missmatch with
 the public key of the new server.
 
 Olivier
 


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sshd problem(s)

2004-06-25 Thread Marc Cabanatuan
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Alright, I've been at this all day and searching all over the place
and have been unable to find an acceptable answer for this. Whenever
ssh'ing to or from my fbsd box i receive the following error:
ssh_exchange_identification: Connection closed by remote host
===
So in light of this, I did some research as far as my use of pf,
portsentry, and hosts.allow/deny go. I double and triple checked,
including using tcpdmatch and there are no rules for block of ssh(d)
traffic on port 22. /var/log/auth.log only shows this:
Jun 24 14:06:57 atari sshd[47710]: refused connect from nintendo
(192.168.0.3), or whereever else ssh connections are coming from.
uname -a: FreeBSD atari.hwnet.ath.cx 5.1-RELEASE-p17 FreeBSD
5.1-RELEASE-p17 #5: Fri Jun 11 10:01:20 CDT 2004
[EMAIL PROTECTED]:/usr/obj/usr/src/sys/ATARI  i386

ssh -V: OpenSSH_3.6.1p1 FreeBSD-20030924, SSH protocols 1.5/2.0,
OpenSSL 0x0090701f
pfctl -sr:
scrub in all fragment reassemble
pass out all
pass quick on lo0 all
block drop in log all
pass in on sis0 inet6 proto tcp from any to fe80::230:95ff:fe00:8be4
port = ssh
pass in on sis0 inet proto tcp from any to 192.168.0.4 port = ssh
pass in on sis0 inet proto tcp from any to 192.168.7.34 port = ssh
pass out on sis0 proto tcp all keep state
pass out on sis0 proto udp all keep state
pass in on sis0 proto tcp from any to foo port = http keep state
pass in on sis0 proto udp from any to foo port = http keep state
pass in on sis0 proto tcp from any to foo port = 3292 keep state
block drop in on sis0 inet proto tcp from 66.159.250.0/24 to any
block drop in on sis0 inet proto udp from 66.159.250.0/24 to any
pass in on sis0 proto tcp from any to foo port = https
pass in on sis0 inet proto tcp from 192.168.0.0/24 to any
pass in on sis0 inet proto udp from 192.168.0.0/24 to any
if there is any other info i can provide please let me know. i
apologize for the lengthy outputs, but i figured it would be best for
assistance in fixing this problem. the only change that im aware of as
far as the network goes is i had the modem replaced today, but that
did not affect internal network activity whatsoever.
Thanks,
Marc
- --
Marc Cabanatuan [EMAIL PROTECTED]
Network and Systems Administrator
A+, Net+, Linux+, CCNA, MCP
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RE: SSHD problem

2002-10-16 Thread Jacco

Hello Kris,

| You do realise the sshd in 4.4-RELEASE has a serious security
| vulnerability?

Unfortunately I didn't know that. Would the coredump (and security)
problem be fixed after upgrading SSHD?

Thank you.

Jacco


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Re: SSHD problem

2002-10-16 Thread Kris Kennaway

On Wed, Oct 16, 2002 at 06:30:12PM +0200, Jacco wrote:
 Hello Kris,
 
 | You do realise the sshd in 4.4-RELEASE has a serious security
 | vulnerability?
 
 Unfortunately I didn't know that. Would the coredump (and security)
 problem be fixed after upgrading SSHD?

No idea about the coredump, but the security problem will certainly be
fixed by following the upgrade directions in the security advisory.

Kris



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SSHD problem

2002-10-15 Thread Jacco

Hello all,

The last day's I tied to get ssh(d) working. My firewall is running FreeBSD
4.4-RELEASE.

from external host:
ssh host
Connection closed by host

Connections from my internal network are working right/correct.

/var/log/messages:

Oct 15 22:47:00 host /kernel: pid 2976 (sshd), uid 0: exited on signal 11
(core dumped)
Oct 15 22:47:00 host /kernel: pid 2976 (sshd), uid 0: exited on signal 11
(core dumped)
Oct 15 22:47:00 host /kernel: Oct 15 22:47:00 lionsoft /kernel: pid 2976
(sshd), uid 0: exited on signal 11 (core dumped)

-rw---   1 root  wheel   512000 Oct 15 22:42 sshd.core

host# gdb /usr/sbin/sshd /sshd.core
GNU gdb 4.18
Copyright 1998 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain
conditions.
Type show copying to see the conditions.
There is absolutely no warranty for GDB.  Type show warranty for details.
This GDB was configured as i386-unknown-freebsd...
(no debugging symbols found)...
Core was generated by `sshd'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/lib/libkrb5.so.3...(no debugging symbols found)...
done.
Reading symbols from /usr/lib/libasn1.so.3...(no debugging symbols found)...
done.
Reading symbols from /usr/lib/libcom_err.so.2...(no debugging symbols
found)...
done.
Reading symbols from /usr/lib/libmd.so.2...(no debugging symbols
found)...done.
Reading symbols from /usr/lib/libroken.so.3...(no debugging symbols
found)...
done.
Reading symbols from /usr/lib/libopie.so.2...(no debugging symbols found)...
done.
Reading symbols from /usr/lib/libcrypt.so.2...(no debugging symbols
found)...
done.
---Type return to continue, or q return to quit---
Reading symbols from /usr/lib/libcrypto.so.2...(no debugging symbols
found)...
done.
Reading symbols from /usr/lib/libutil.so.3...(no debugging symbols found)...
done.
Reading symbols from /usr/lib/libz.so.2...(no debugging symbols
found)...done.
Reading symbols from /usr/lib/libwrap.so.3...(no debugging symbols found)...
done.
Reading symbols from /usr/lib/libpam.so.1...(no debugging symbols found)...
done.
Reading symbols from /usr/lib/libc.so.4...(no debugging symbols
found)...done.
Reading symbols from /usr/libexec/ld-elf.so.1...(no debugging symbols
found)...
done.
#0  0x80531fb in getsockname ()
(gdb)

Is there someone who can help me get this working. I don't know where I must
look for to solve this problem. Do I have to upgrade sshd ?

Kind regards,
Jacco
_
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Re: SSHD problem

2002-10-15 Thread Kris Kennaway

On Tue, Oct 15, 2002 at 11:13:46PM +0200, Jacco wrote:
 Hello all,
 
 The last day's I tied to get ssh(d) working. My firewall is running FreeBSD
 4.4-RELEASE.

You do realise the sshd in 4.4-RELEASE has a serious security
vulnerability?

Kris



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