similar to: ssh security

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