07-28-2004
How to block the IP after many times fail login?
Hi, there. I am using Red Hat 9 to run my web server. Recently I found lots tempts from different IP addresses tried to login into my system. I am not sure if they are the same person or not. Since this server is only for web hosting purpose for couple of my friends and myself, so it is very easy found out other people tried to get in.
My situation is like this: I have to run the ssh, but those tempts are really annoying. So could anyone show me how to block an IP address after 5 fail login, just for couple hours.
Thanks in advance,
HOUSCOUS
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LEARN ABOUT OPENSOLARIS
ssh-http-proxy-connect
ssh-http-proxy-connect(1) User Commands ssh-http-proxy-connect(1)
NAME
ssh-http-proxy-connect - Secure Shell proxy for HTTP
SYNOPSIS
/usr/lib/ssh/ssh-http-proxy-connect [-h http_proxy_host]
[-p http_proxy_port] connect_host connect_port
DESCRIPTION
A proxy command for ssh(1) that uses HTTP CONNECT. Typical use is where connections external to a network are only allowed via a proxy web
server.
OPTIONS
The following options are supported:
-h http_proxy_host Specifies the proxy web server through which to connect. Overrides the HTTPPROXY and http_proxy environment variables
if they are set.
-p http_proxy_port Specifies the port on which the proxy web server runs. If not specified, port 80 is assumed. Overrides the HTTPPROXY-
PORT and http_proxy environment variables if they are set.
OPERANDS
The following operands are supported:
http_proxy_host The host name or IP address (IPv4 or IPv6) of the proxy.
http_proxy_port The numeric port number to connect to on http_proxy_host.
connect_host The name of the remote host to which the proxy web server is to connect you.
connect_port The numeric port number of the proxy web server to connect you to on http_proxy_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-http-proxy-connect in ssh_config(4) when the proxy is set from the environment:
Host playtime.foo.com
ProxyCommand /usr/lib/ssh/ssh-http-proxy-connect
playtime.foo.com 22
Example 2 Overriding proxy environment variables
The following example uses ssh-http-proxy-connect in ssh_config(4) to override (or if not set) proxy environment variables:
Host playtime.foo.com
ProxyCommand /usr/lib/ssh/ssh-http-proxy-connect -h webcache
-p 8080 playtime.foo.com 22
Example 3 Using the command line
The following example uses ssh-http-proxy-connect from the ssh(1) command line:
example$ ssh -o'ProxyCommand="/usr/lib/ssh/ssh-http-proxy-connect
-h webcache -p 8080 playtime.foo.com 22"' playtime.foo.com
ENVIRONMENT VARIABLES
HTTPPROXY Takes the http_proxy_host operand to specify the default proxy host. Overrides http_proxy if both are set.
HTTPPROXYPORT Takes the http_proxy_port operand to specify the default proxy port. Ignored if HTTPPROXY is not set.
http_proxy URL format for specifying proxy host and 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-socks5-proxy-connect(1), ssh_config(4), attributes(5)
SunOS 5.11 24 Oct 2001 ssh-http-proxy-connect(1)