09-06-2003
What do you mean by opening a port?
If an application server binds to the port to listen incoming traffic or have to send out any messages, the port must be open. Otherwise, it is closed. I don't think you will manually open a port.
Or do you mean to configure the firewall to enable certain ports that are otherwise blocked by default?
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1. Cybersecurity
/* Linux Slackware */
Nmap shows the following ports open on the gateway.
21/tcp ftp
22/tcp ssh
23/tcp telnet
25/tcp smtp
37/tcp time
80/tcp http
113/tcp auth
515/tcp printer
587/tcp submission
1024/tcp kdm
6000/tcp x11
-------------------------------
i would like to close as... (10 Replies)
Discussion started by: LowOrderBit
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2. UNIX for Advanced & Expert Users
hi all
1) how to determine available ports in a box (solaris)
do i have to go for a netstat on all the ports?
2) how to block a particular port for a particular type of connection.
Any help would be greatly appreciated
Thanks (7 Replies)
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3. Shell Programming and Scripting
Hello, i need a script (bash type maybe?..), which would check open ports on 127.0.0.1 and then compare open ports with "registered/allowed" port list and try to kill the program who uses unregistered ports. It would be great that script would be started lets say every 5 or 10 minutes.
You see i... (2 Replies)
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4. AIX
Hi Every body,
What is the command on AIX 5.2 that can be used to get all open ports? (2 Replies)
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5. UNIX for Dummies Questions & Answers
Hello,
I have a number of Solaris 8 Sun servers that have open ports that I cannot identify. I see some with 1012-1020 (which are reserved ports according to the IANA. Lsof does not identify these. One server has all these on and one server just has 1017.
*.1023 ... (3 Replies)
Discussion started by: csross
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6. Solaris
Hello,
I have a number of Solaris 8 Sun servers that have open ports that I cannot identify. I see some with 1013-1023 (which are reserved ports according to the IANA. Lsof does not identify these. I rebooted the server and they went off, but this morning I saw they were all back on again. Any... (1 Reply)
Discussion started by: csgonan
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7. Solaris
hi guys,
may i know the exact steps to open a port in solaris.i have some rough idea - which is adding the port number in /etc/services.
but i am not sure the correct conventions, steps or any other steps.
kindly advise.thanks guys ! (1 Reply)
Discussion started by: cromohawk
1 Replies
8. UNIX for Dummies Questions & Answers
just a quick question:
a. whats the simplest command to check open port and the corresponding services?
example:
bash-2.05# netstat -an | grep LISTEN
*.199 *.* 0 0 49152 0 LISTEN
*.8989 *.* 0 0 49152 ... (1 Reply)
Discussion started by: lhareigh890
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9. IP Networking
Hi,
I have read some forum theads about the open and close ports. some points are clear and it is not working on my machine or something am i missing?
I have commented out a port /etc/services, one application uses
then when i use the telnet <hostname> <port_blocked> it shows connected..... (1 Reply)
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LEARN ABOUT FREEBSD
portindex
PORTINDEX(5) BSD File Formats Manual PORTINDEX(5)
NAME
INDEX -- File containing information about the state of the ports tree
DESCRIPTION
The port index file in /usr/ports contains various bits of information about the ports tree. Each major branch of FreeBSD has a separate
index file, named ``INDEX-N'', where N is the major version number of the FreeBSD branch, i.e.: INDEX-7, or INDEX-8.
name The name of the package.
path The path to the port directory.
install prefix
The default install prefix.
short description
A short description.
full description
The path to the full description.
maintainer email
The email address of the maintainer.
index The categories this port is part of.
build dependencies
Ports required to be installed prior to building this port.
run dependencies
Ports required to be installed for this port to run.
website The project website for the port.
e-deps Ports that may be required to extract this port.
p-deps Ports that may be required to patch this port.
f-deps Ports that may be required to fetch this port.
FILES
/usr/ports/INDEX-N where N is the major version number of the FreeBSD branch.
EXAMPLES
vim-6.3.15|/usr/ports/editors/vim|/usr/local|Vi "workalike", with many additional features|/usr/ports/editors/vim/pkg-descr|obrien@FreeBSD.org|editors|libiconv-1.9.2_1|libiconv-1.9.2_1|http://www.vim.org/|||
SEE ALSO
build(7), ports(7)
AUTHORS
This manual page was written by Paul Armstrong and Thomas Abthorpe <tabthorpe@FreeBSD.org>.
BSD
October 14, 2012 BSD