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telnet, ftp is running but can't connect from outside

 
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Old 01-14-2006
telnet, ftp is running but can't connect from outside
Yesterday, I and all my users couldn't connect to my server using ssh, telnet or ftp even though they were running (keep getting "connection timed out" error message).

This morning, my partner logon from the main console, restarted sshd and xinetd (I belive he didnt restarted the server), now I can ssh to my server, but telnet and ftp is still not accepting any connection from outside (I can telnet and ssh within the box). I believe this is because somehow my server doesn't accept any connection to port 21 & 23 even though they are open

Quote:
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
23/tcp open telnet
25/tcp open smtp
80/tcp open http
111/tcp open rpcbind
143/tcp open imap
443/tcp open https
587/tcp open submission
993/tcp open imaps
10000/tcp open snet-sensor-mgmt
Is there anyway I can fix it and what caused it?

Ps: My server is recently installed java 1.5 which have few issues with gentoo (the OS it's running). However, I only left it as user VM, and set 1.4.0.5 as server VM. But somehow, serverVM was changed to 1.5. So maybe this is the reason for the problem above?? But it doesn't make any sense to me
 
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LEARN ABOUT LINUX

ssh-socks5-proxy-connect

ssh-socks5-proxy-connect(1)					   User Commands				       ssh-socks5-proxy-connect(1)

NAME

       ssh-socks5-proxy-connect - Secure Shell proxy for SOCKS5

SYNOPSIS

       /usr/lib/ssh/ssh-socks5-proxy-connect [-h socks5_proxy_host] [-p socks5_proxy_port] connect_host connect_port

DESCRIPTION

       A proxy command for ssh(1) that uses SOCKS5 (RFC 1928). Typical use is where connections external to a network are only allowed via a socks
       gateway server.

       This proxy command does not provide any of the SOCKS5 authentication mechanisms defined in RFC 1928. Only anonymous connections are  possi-
       ble.

OPTIONS

       The following options are supported:

       -h socks5_proxy_host    Specifies the proxy web server through which to connect. Overrides the SOCKS5_SERVER environment variable.

       -p socks5_proxy_port    Specifies  the  port  on  which	the  proxy  web  server  runs. If not specified, port 80 is assumed. Overrides the
			       SOCKS5_PORT environment variable.

OPERANDS

       The following operands are supported:

       socks5_proxy_host       The host name or IP address (IPv4 or IPv6) of the proxy.

       socks5_proxy_port       The numeric port number to connect to on socks5_proxy_host.

       connect_host	       The name of the remote host to which the socks gateway is to connect you.

       connect_port	       The numeric port number of the socks gateway to connect you to on connect_host.

EXAMPLES

       The recommended way to use a proxy connection command is to configure the ProxyCommand in ssh_config(4) (see  Example  1  and  Example  2).
       Example 3 shows how the proxy command can be specified on the command line when running ssh(1).

       Example 1: Setting the proxy from the environment

       The following example uses ssh-socks5-proxy-connect in ssh_config(4) when the proxy is set from the environment:

       Host playtime.foo.com
	   ProxyCommand /usr/lib/ssh/ssh-socks5-proxy-connect 
	       playtime.foo.com 22

       Example 2: Overriding proxy environment variables

       The following example uses ssh-socks5-proxy-connect in ssh_config(4) to override (or if not set) proxy environment variables:

       Host playtime.foo.com
	   ProxyCommand /usr/lib/ssh/ssh-socks5-proxy-connect -h socks-gw 
	       -p 1080 playtime.foo.com 22

       Example 3: Using the command line

       The following example uses ssh-socks5-proxy-connect from the ssh(1) command line:

       example$ ssh -o'ProxyCommand=/usr/lib/ssh/ssh-socks5-proxy-connect 
	   -h socks-gw -p 1080 playtime.foo.com 22' playtime.foo.com

ENVIRONMENT VARIABLES

       SOCKS5_SERVER	       Takes socks5_proxy_host operand to specify the default proxy host.

       SOCKS5_PORT	       Takes socks5_proxy_port	operand to specify the default proxy port.

EXIT STATUS

       The following exit values are returned:

       0	Successful completion.

       1	An error occurred.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWsshu			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Stable			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       ssh(1), ssh-http-proxy-connect(1), ssh_config(4), attributes(5)

SunOS 5.10							    30 Oct 2002 				       ssh-socks5-proxy-connect(1)