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)
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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 DEBIAN
ib_send_lat
ib_send_lat(1) User Commands ib_send_lat(1)
NAME
ib_send_lat - RDMA send latency test
SYNOPSIS
ib_send_lat [ options ] [ server IP address ]
DESCRIPTION
This program tests the latency of RMDA send transactions.
OPTIONS
-p, --port=<port>
listen on/connect to port <port> (default: 18515)
-m, --mtu=<mtu>
mtu size (default: 1024)
-d, --ib-dev=<dev>
use IB device <dev> (default: first device found)
-i, --ib-port=<port>
use port <port> of IB device (default: 1)
-s, --size=<size>
size of message to exchange (default: 1)
-a, --all
run sizes from 2 till 2^23
-t, --tx-depth=<dep>
size of tx queue (default: 50)
-n, --iters=<iters>
number of exchanges (at least 100, default: 1000)
-C, --report-cycles
report times in cpu cycle units (default: microseconds)
-H, --report-histogram
print out all results (default: print summary only)
-U, --report-unsorted
(implies -H) print out unsorted results (default: sorted)
-V, --version
display version number
AUTHOR
Guy Coates < gmpc@sanger.ac.uk >
perftest February 20, 2008 ib_send_lat(1)