Displaying 20 results from an estimated 1100 matches similar to: "ssh security"
2008 Jun 24
2
DNS query
Dear All,
i have the following setup
CentOS 5 server running as a primary DNS server for a long time and is
working perfectly fine
the server is on public IP and we have abt 5 zones apart from the reverse
n local zone
now our sister company have recently setup their own DNS and we are
supposed to use it.
earlier our cleints were using a host file
now on my master dns server in /etc/named.conf
2001 Apr 09
1
input_userauth_request() vs. stateful authmethods
The way things are now, input_userauth_request() calls the authmethod,
and then does a bunch of checks, like the special case for root. If
an authmethod requires a challenge-response conversation, these checks are
skipped, unless they are duplicated by the authmethod. For example, in
auth2-chall.c, some of the code is duplicated (logging, sending the
reply), but the root special case is skipped.
2017 Jan 23
2
Open SSH public key setup not working on windows 2012
Hi,
I downloaded setupssh-7.3p1-2.exe for Windows x64.
I created private public keys and set it up accordingly.
After entering the passphrase, I see authentication succeeded message but then
the connection to the remote host gets closed immediately.
Some of the Client output:
************************
...
Enter passphrase for key '/home/user2/.ssh/id_rsa':
debug1: Authentication
2002 Jun 30
2
Password auth problem with openssh 3.4 and Linux 2.2.20
After upgrading to openssh-3.4p1, password authentication is no longer
working on my system. I'm running Linux RedHat 6.2 with:
kernel 2.2.20
openssh-3.4p1
openssl-0.9.6
pam-0.72-6
pwdb-0.61-0
I've tried it with and without compression, with and without priv sep, and I
always get errors like this:
Jun 30 19:07:48 sugarfreejazz sshd[1344]: Failed password for randy from
10.10.10.2 port
2001 Jun 26
1
OpenSSH 2.9p2 with PAMAuthenticationViaKbdInt
When using PAM to do password authenticaion the attempt/failure counter
appears to be getting confused. This is using a rh62 system with the
openssh-2.9p2-1 rpms...
On the client side...
[matthewm at toadhall (7) matthewm]$ grep Auth /etc/ssh/ssh_config
RhostsAuthentication no
RhostsRSAAuthentication no
HostbasedAuthentication no
RSAAuthentication no
PubkeyAuthentication yes
2002 Jan 07
1
Non-root hostname auth problem
All:
I have a problem connecting Openssh 3.0.2p1 on Solaris 8 using hostname
authentication for non-root users. When I connect to the sshd from a
second machine as root it works fine using HostbasedAuthentication, but it
always fails with non-root users.
I suspect that I am having a permissions problem somewhere, but I'll be
damned if I can figure out where.
Any and all help
2005 Apr 06
8
What is this Very Stupid DOS Attack Script?
We have been noticing flurries of sshd reject messages in
which some system out there in the hinterlands hits us with a flood of
ssh login attempts. An example:
Apr 6 05:41:51 dc sshd[88763]: Did not receive identification
string from 67.19.58.170
Apr 6 05:49:42 dc sshd[12389]: input_userauth_request: illegal
user anonymous
Apr 6 05:49:42 dc sshd[12389]: Failed password for illegal user
2017 Feb 13
3
Logfile encoding question
Hello.
I've got a question about encoding in sshd's log files.
When I try to log in with a "?" username, which is a cyrillic "h" (U+0445),
I get this message in a logfile: input_userauth_request: invalid user
\\321\\205 [preauth].
I am struggling to understand: is that hex, is that octal? It doesn't map
to any encoding that I know of.
2019 Feb 28
4
[OT?] Kerberos, PAM, NSS: if user does not exist, pam_krb5 try login?
A bit more then a curiosity.
Mobing from Samba/NT to Samba/AD i'm now switching some 'one-purpose'
(mostly containers) from libpam-ldaps to libpam-krb5.
In these box normally i don't need user access, so i create 'manually'
(eg, in /etc/passwd) only the admin users, and i add only the PAM layer
to do external auth.
Still i use ssh keys for direct root access, but as an
2003 Feb 13
2
openssh remote add user exploits?
Hello. Recently I discovered some kind of exploit of openssh used against
me. For configuration info, I am using Mandrake 8.2 with the openssh
package openssh-3.1p1-1mdk.
Fortunately, I was at least somewhat security-aware, and have an
AllowUsers parameter in my sshd config file. I Used to allow only public
key logins, but ditched that when I found myself needing access from
multiple places. I
2003 Sep 24
2
sshd terminates a session after a successful login
I've recently upgraded our environment to OpenSSH-3.7.1p1 on Solaris, AIX
and IRIX. I have had no luck when it comes to getting the IRIX environment
to work. With sshd running on an IRIX server, I connect with any other
version/OS ssh, watch the connection establish, get right up to the point
where the shell should spawn and sshd terminates. I have been unable to
find any information online
2014 May 16
2
? about portable version of sshd crashing
I am porting over the portable version of openssh to our uCLinux
implementation. Everything has worked with minimal effort and I appreciate
all the work.
But, I am having a problem whereby the sshd executable is crashing and I
really could use some help on where to look at this in more details.
Here is how I start up the sshd for testing.
/usr/sbin/sshd -D -ddd -f /etc/ssh/sshd_config -p 65
2003 Jul 09
3
OpenSSH 3.6.1p2 ON SCO 3.2v4.2 + STRICTMODES -->yes
Greetings,
I have compiled OpenSSH-3.6.1p2 on SCO 3.2v4.2 and
the following problem occurs:
I am unable to login as root using when strictmode is set to yes.
output of debug:
Failed none for root from 192.168.1.1 port 1199 ssh2
debug1: userauth-request for user root service ssh-connection method
publickey
debug1: attempt 1 failures 1
debug2: input_userauth_request: try method publickey
debug1:
2003 Jan 21
3
X11 forwarding problem -- openssh-3.5p1 -- redhat 8.0 -- linux 2.4.18
All,
I'm working on upgrading a machine from RH 6.2 to RH 8.0. I've
encountered one major (for me) snag in that I cannot get X11 forwarding to
work anymore.
I've been google-ing the error messages all morning, with no luck.
Here is debugging output from the server (client debugging output sent
upon request... I don't feel it is relevant). What I feel is interesting
is at the
2001 Dec 05
1
gssapi + seam on solaris
i've compiled openssh with the gssapi patches on a solaris 8 system
using sun's SEAM. gssapi isn't initializing properly it seems.
debug2: input_userauth_request: try method gssapi
debug1: Mechanism negotiation is not supported
Failed gssapi for xxxx from xxxx port 33555 ssh2
sun's kerberized tools are working fine.
any help would be appreciated.
--
http://chemlab.org -
2009 Jul 15
1
require a getent passwd for winbind to work first time
Hello,
This may not be a problem but just want to check on something. I
think I have a working config. I joined a domain successfully.
However, after configuring ssh to use winbind, it does not work until
I do a 'getent passwd'. It fails with this:
Jul 15 14:53:46 omadvnfs01b sshd[25072]: Invalid user DOMAIN+user from
192.168.101.70
Jul 15 14:53:46 omadvnfs01b sshd[25073]:
2023 Apr 12
1
Defend against user enumeration timing attacks - overkill
Dear colleagues,
I have a question about this commit:
https://github.com/openssh/openssh-portable/commit/e9d910b0289c820852f7afa67f584cef1c05fe95#diff-a25e40214ca9c9f78abce22f23bf2abdb2a24384c6610d60bbb314aed534eb48R216
The function ensure_minimum_time_since effectively doubles the time
spent in the input_userauth_request (mostly presumably in PAM). So if
PAM processing is really slow, it will
2014 Dec 23
3
chaining AUTH methods -- adding GoogleAuthenticator 2nd Factor to pubkey auth? can't get the GA prompt :-/
On Sun, Dec 21, 2014 at 5:25 PM, Damien Miller <djm at mindrot.org> wrote:
> On Fri, 19 Dec 2014, Dmt Ops wrote:
>
> > I added an EXPLICIT
> >
> > AuthenticationMethods publickey,keyboard-interactive
> > + UsePam yes
> >
> > to sshd_config. Now, at connect attempt I get
> >
> > Password:
> > Verification code:
> >
2003 Oct 05
2
OpenSSH Authentication on Solaris w/ NIS+ Problem
Hello,
I am having a very aggrivating problem, and I will try and provide all of the necessary information. I have openssh-3.7.1p2 with openssl-0.9.6k installed on Solaris 8. Here is what I've been able to determine so far:
1. Local account authentication works fine (non-NIS+).
1a. NIS+ is running at security level 2
2. Telnet authentication works fine.
2a. When I use the SSH client,
2017 Nov 01
2
Winbind, Kerberos, SSH and Single Sign On
Hi,
at first I'm not sure if this is the correct list to ask this question.
But since I'm using winbind I hope you can help me.
I try to realize a kerberized ssh from one client to another. Both
clients are member of subdom2.subdom1.example.de and joined to it. The
users are from example.de, where subdom1.example.de is a subdomain
(bidirectional trust) of example.de and