Gentoo Archives: gentoo-user-hu

From: Aleph <alephlg@×××××.com>
To: gentoo-user-hu@l.g.o
Subject: Re: [gentoo-user-hu] sshd reverse mapping problema
Date: Tue, 13 Mar 2007 11:48:30
Message-Id: c3e6dbbe0703130448h7913f6f2pc55128f093818ce0@mail.gmail.com
In Reply to: Re: [gentoo-user-hu] sshd reverse mapping problema by cjvt
Most nincs engedélyezve az egyik azonosítási mód sem. :-)
Ajánlom:
http://www.gentoo.org/doc/hu/security/security-handbook.xml?part=1&chap=10#doc_chap11

Aleph

2007/3/13, cjvt <cjvt@××××××××.hu>:
> > $ cat sshd_config > > # $OpenBSD: sshd_config,v 1.74 2006/07/19 13:07:10 dtucker Exp $ > > # This is the sshd server system-wide configuration file. See > # sshd_config(5) for more information. > > # This sshd was compiled with PATH=/usr/bin:/bin:/usr/sbin:/sbin > > # The strategy used for options in the default sshd_config shipped with > # OpenSSH is to specify options with their default value where > # possible, but leave them commented. Uncommented options change a > # default value. > > Port 225 > Protocol 2 > #AddressFamily any > #ListenAddress 0.0.0.0 > #ListenAddress :: > > # HostKey for protocol version 1 > #HostKey /etc/ssh/ssh_host_key > # HostKeys for protocol version 2 > #HostKey /etc/ssh/ssh_host_rsa_key > #HostKey /etc/ssh/ssh_host_dsa_key > > # Lifetime and size of ephemeral version 1 server key > #KeyRegenerationInterval 1h > #ServerKeyBits 768 > > # Logging > # obsoletes QuietMode and FascistLogging > #SyslogFacility AUTH > #LogLevel INFO > > # Authentication: > > #LoginGraceTime 2m > PermitRootLogin no > #StrictModes yes > #MaxAuthTries 6 > > #RSAAuthentication yes > #PubkeyAuthentication yes > #AuthorizedKeysFile .ssh/authorized_keys > > # For this to work you will also need host keys in > /etc/ssh/ssh_known_hosts > #RhostsRSAAuthentication no > # similar for protocol version 2 > #HostbasedAuthentication no > # Change to yes if you don't trust ~/.ssh/known_hosts for > # RhostsRSAAuthentication and HostbasedAuthentication > #IgnoreUserKnownHosts no > # Don't read the user's ~/.rhosts and ~/.shosts files > #IgnoreRhosts yes > > # To disable tunneled clear text passwords, change to no here! > PasswordAuthentication no > #PermitEmptyPasswords no > > # Change to no to disable s/key passwords > #ChallengeResponseAuthentication yes > > # Kerberos options > #KerberosAuthentication no > #KerberosOrLocalPasswd yes > #KerberosTicketCleanup yes > #KerberosGetAFSToken no > > # GSSAPI options > #GSSAPIAuthentication no > #GSSAPICleanupCredentials yes > > # Set this to 'yes' to enable PAM authentication, account processing, > # and session processing. If this is enabled, PAM authentication will > # be allowed through the ChallengeResponseAuthentication and > # PasswordAuthentication. Depending on your PAM configuration, > # PAM authentication via ChallengeResponseAuthentication may bypass > # the setting of "PermitRootLogin without-password". > # If you just want the PAM account and session checks to run without > # PAM authentication, then enable this but set PasswordAuthentication > # and ChallengeResponseAuthentication to 'no'. > UsePAM no > > #AllowTcpForwarding yes > #GatewayPorts no > #X11Forwarding no > #X11DisplayOffset 10 > #X11UseLocalhost yes > #PrintMotd yes > #PrintLastLog yes > #TCPKeepAlive yes > #UseLogin no > #UsePrivilegeSeparation yes > #PermitUserEnvironment no > #Compression delayed > #ClientAliveInterval 0 > #ClientAliveCountMax 3 > UseDNS no > #PidFile /var/run/sshd.pid > #MaxStartups 10 > #PermitTunnel no > > # no default banner path > #Banner /some/path > > # override default of no subsystems > Subsystem sftp /usr/lib64/misc/sftp-server > > # Example of overriding settings on a per-user basis > #Match User anoncvs > # X11Forwarding no > # AllowTcpForwarding no > # ForceCommand cvs server > > > vt > 2007. március 13. dátummal Aleph ezt írta: > > A baj az, hogy a jelszavas azonosítás nincs engedélyezve, de elvárja. > Ezért > > a public-key sikeressége után elutasít. Ha minden igaz akkor a > > configfile-ban nincs kommentelve a pam-ot engedélyező sor. > > > > Aleph > > > > 2007/3/13, cjvt <cjvt@××××××××.hu>: > > > udv Mindenki, > > > > > > Van egy olyan problemam, hogy nem tudom mi okbol, de az sshd > eltanacsol: > > > > > > Ha a kliensen (ubuntu - 192.168.1.1) probalkozom, ez az eredmeny: > > > > > > $ ssh user@192.168.1.50 -p 225 -v > > > > > > OpenSSH_4.3p2 Debian-5ubuntu1, OpenSSL 0.9.8b 04 May 2006 > > > debug1: Reading configuration data /etc/ssh/ssh_config > > > debug1: Applying options for * > > > debug1: Connecting to 192.168.1.50 [192.168.1.50] port 225. > > > debug1: Connection established. > > > debug1: identity file /home/user/.ssh/identity type -1 > > > debug1: identity file /home/user/.ssh/id_rsa type -1 > > > debug1: identity file /home/user/.ssh/id_dsa type -1 > > > debug1: Remote protocol version 2.0, remote software version > OpenSSH_4.6 > > > debug1: match: OpenSSH_4.6 pat OpenSSH* > > > debug1: Enabling compatibility mode for protocol 2.0 > > > debug1: Local version string SSH-2.0-OpenSSH_4.3p2 Debian-5ubuntu1 > > > debug1: SSH2_MSG_KEXINIT sent > > > debug1: SSH2_MSG_KEXINIT received > > > debug1: kex: server->client aes128-cbc hmac-md5 none > > > debug1: kex: client->server aes128-cbc hmac-md5 none > > > debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent > > > debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP > > > debug1: SSH2_MSG_KEX_DH_GEX_INIT sent > > > debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY > > > debug1: Host '192.168.1.50' is known and matches the RSA host key. > > > debug1: Found key in /home/user/.ssh/known_hosts:1 > > > debug1: ssh_rsa_verify: signature correct > > > debug1: SSH2_MSG_NEWKEYS sent > > > debug1: expecting SSH2_MSG_NEWKEYS > > > debug1: SSH2_MSG_NEWKEYS received > > > debug1: SSH2_MSG_SERVICE_REQUEST sent > > > debug1: SSH2_MSG_SERVICE_ACCEPT received > > > debug1: Authentications that can continue: publickey > > > debug1: Next authentication method: publickey > > > debug1: Trying private key: /home/user/.ssh/identity > > > debug1: Trying private key: /home/user/.ssh/id_rsa > > > debug1: Trying private key: /home/user/.ssh/id_dsa > > > debug1: No more authentication methods to try. > > > Permission denied (publickey). > > > > > > > > > a szerver (gentoo - 192.168.1.50) ugyanakkor ezt mondja a lognak: > > > > > > > > > reverse mapping checking getaddrinfo for server [192.168.1.1] failed - > > > POSSIBLE BREAK-IN ATTEMPT! > > > > > > valaki tudja, mit editaltam tonkre? ;) > > > > > > vt > > > -- > > > gentoo-user-hu@g.o mailing list > > > -- > gentoo-user-hu@g.o mailing list > >

Replies

Subject Author
Re: [gentoo-user-hu] sshd reverse mapping problema cjvt <cjvt@××××××××.hu>