Ping against server will work if firewall allows ICMP probes.
If a server service is listening on port N, a simple telnet IP port will tell you that.
Something like :
This tells me that 4.59.125.171 has a port 80 open are receiving requests.
For further (security ) analysis nmap is the best tool.
Port Scanning is Not a Crime but acting on its results can be, especially on government and financial sites.
I can ping other computers in my office. I can telnet other users in my office but i cannot get out of the office network. If i try to go out side of my network it cannot find host.
Any ideas? (5 Replies)
Hi,
Can anybody help me out why l can't not ping my server with Openserver 5.0.4 with my windows machine from a remote site.
The machine could see the local LAN with the Router however, i can't ping or telnet unto the server from another site on the WAN. The default gateway was configure on the... (0 Replies)
Hi All,
We are not able to ping to a AIX box...Network is ok..when we give ping from that AIX box..it is giving 0821-067 ping: The socket creation call failed.there is no enough buffer space for the requested socket operation.
refresh -s inetd is also giving socket error.
Please help to... (1 Reply)
I have one problem and it is giving me hard time
I can ping my windows machine
root@x1ChXpress:/sbin
>ping 192.168.129.66
192.168.129.66 is alive
root@x1ChXpress:/sbin
>netstat -rn
Routing Table:
Destination Gateway Flags Ref Use Interface... (3 Replies)
I have two redhat linux server. i have created one script which contain some command that run on Local server as well as remote server.I am using this command to connect to remote server
ssh user1@192.x.x.x 'command'
but when i am running the script in local server it connecting to the server... (1 Reply)
We have a Sun Solaris Netra 20 server. Our O&M Server gets Alarm Processor
not responding. When Alarm occurs, you can ping the sun server but cannot telnet it. We keep getting Interrupt level not serviced. var/adm/message log is
> tail -f messages
Apr 12 20:09:56 cama pcisch: PCI-device:... (9 Replies)
Hi all,
I am not sure if my problem is specific to HP-UX or not. Hopefully someone can tell me what's wrong.
I have a server name server1 10.100.50.10 in the /etc/hosts file and if I do a ping server1, it shows the right IP address.
However, if I run telnet server1, it is not using... (4 Replies)
Hi,
After a crash of our older AIX server it happend as it is in the title:
ping is ok, but telnet:
What it can be this strange thing?
Franci (2 Replies)
Hello,
I need help, I have the following which save in the result file ping and telnet:port test.
Basically the script works but I should implement a check on ping and telnet command so that ping has 5 seconds threshold and telnet (more important) 10 seconds. Over that threshold ping and... (0 Replies)
Discussion started by: marmellata
0 Replies
LEARN ABOUT REDHAT
gimp::net
Net(3) User Contributed Perl Documentation Net(3)NAME
Gimp::Net - Communication module for the gimp-perl server.
SYNOPSIS
use Gimp;
DESCRIPTION
For Gimp::Net (and thus commandline and remote scripts) to work, you first have to install the "Perl-Server" extension somewhere where Gimp
can find it (e.g in your .gimp/plug-ins/ directory). Usually this is done automatically while installing the Gimp extension. If you have a
menu entry "<Xtns"/Perl-Server> then it is probably installed.
The Perl-Server can either be started from the "<Xtns"> menu in Gimp, or automatically when a perl script can't find a running Perl-Server.
When started from within The Gimp, the Perl-Server will create a unix domain socket to which local clients can connect. If an authorization
password is given to the Perl-Server (by defining the environment variable "GIMP_HOST" before starting The Gimp), it will also listen on a
tcp port (default 10009). Since the password is transmitted in cleartext, using the Perl-Server over tcp effectively lowers the security of
your network to the level of telnet. Even worse: the current Gimp::Net-protocol can be used for denial of service attacks, i.e. crashing
the Perl-Server. There also *might* be buffer-overflows (although I do care a lot for these).
ENVIRONMENT
The environment variable "GIMP_HOST" specifies the default server to contact and/or the password to use. The syntax is [auth@][tcp/]host-
name[:port] for tcp, [auth@]unix/local/socket/path for unix and spawn/ for a private gimp instance. Examples are:
www.yahoo.com # just kidding ;)
yahoo.com:11100 # non-standard port
tcp/yahoo.com # make sure it uses tcp
authorize@tcp/yahoo.com:123 # full-fledged specification
unix/tmp/unx # use unix domain socket
password@unix/tmp/test # additionally use a password
authorize@ # specify authorization only
spawn/ # use a private gimp instance
spawn/nodata # pass --no-data switch
spawn/gui # don't pass -n switch
CALLBACKS
net()
is called after we have succesfully connected to the server. Do your dirty work in this function, or see Gimp::Fu for a better solu-
tion.
FUNCTIONS
server_quit()
sends the perl server a quit command.
get_connection()
return a connection id which uniquely identifies the current connection.
set_connection(conn_id)
set the connection to use on subsequent commands. "conn_id" is the connection id as returned by get_connection().
BUGS
(Ver 0.04) This module is much faster than it ought to be... Silly that I wondered wether I should implement it in perl or C, since perl is
soo fast.
AUTHOR
Marc Lehmann <pcg@goof.com>
SEE ALSO perl(1), Gimp.
perl v5.8.0 2001-12-06 Net(3)