LinuxQuestions.org - easy ssh problem

Hi,

I am just trying :

Code:

nmap -sS 10.1.1.15

behind the firewalling/router...
and get:

Code:

PORT    STATE SERVICE

111/tcp  open  rpcbind

139/tcp  open  netbios-ssn

445/tcp  open  microsoft-ds

736/tcp  open  unknown

2049/tcp open  nfs



Nmap finished: 1 IP address (1 host up) scanned in 0.094 seconds

I cannot understand why my ssh open-ssh server services are not showing up with nmap ?
And:

Code:

ssh 10.1.1.15 -p 5423

works great.

So, then, I cannot explain & understand it.

Plz find the /etc/ssh/sshd_conf:

Code:

# Package generated configuration file

# See the sshd(8) manpage for details



# What ports, IPs and protocols we listen for

Port 5423

# Use these options to restrict which interfaces/protocols sshd will bind to

#ListenAddress ::

#ListenAddress 0.0.0.0

Protocol 2

# HostKeys for protocol version 2

HostKey /etc/ssh/ssh_host_rsa_key

HostKey /etc/ssh/ssh_host_dsa_key

#Privilege Separation is turned on for security

UsePrivilegeSeparation yes



# Lifetime and size of ephemeral version 1 server key

KeyRegenerationInterval 3600

ServerKeyBits 768



# Logging

SyslogFacility AUTH

LogLevel INFO



# Authentication:

LoginGraceTime 120

PermitRootLogin no

StrictModes yes



RSAAuthentication yes

PubkeyAuthentication yes

#AuthorizedKeysFile        %h/.ssh/authorized_keys



# Don't read the user's ~/.rhosts and ~/.shosts files

IgnoreRhosts yes

# For this to work you will also need host keys in /etc/ssh_known_hosts

RhostsRSAAuthentication no

# similar for protocol version 2

HostbasedAuthentication no

# Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication

#IgnoreUserKnownHosts yes



# To enable empty passwords, change to yes (NOT RECOMMENDED)

PermitEmptyPasswords no



# Change to yes to enable challenge-response passwords (beware issues with

# some PAM modules and threads)

ChallengeResponseAuthentication no



# Change to no to disable tunnelled clear text passwords

#PasswordAuthentication yes



# Kerberos options

#KerberosAuthentication no

#KerberosGetAFSToken no

#KerberosOrLocalPasswd yes

#KerberosTicketCleanup yes



# GSSAPI options

#GSSAPIAuthentication no

#GSSAPICleanupCredentials yes



X11Forwarding yes

X11DisplayOffset 10

PrintMotd no

PrintLastLog yes

TCPKeepAlive yes

#UseLogin no



#MaxStartups 10:30:60

#Banner /etc/issue.net



# Allow client to pass locale environment variables

AcceptEnv LANG LC_*



Subsystem sftp /usr/lib/openssh/sftp-server



UsePAM yes

(nota: the port forwarding is well configured !! )