Sponsored Content
Full Discussion: closing open ports
Special Forums Cybersecurity closing open ports Post 7317 by rwb1959 on Monday 24th of September 2001 10:10:22 PM
Old 09-24-2001
I would also keep ssh open to allow for
remote monitoring and administration.
You may also wish to use ssh to "tunnel"
through to an internal system. It really
comes in handy when you get a call in the middle
of the night Smilie
 

9 More Discussions You Might Find Interesting

1. Cybersecurity

firewall vs. closing ports

This may be kind of a stupid question, but here goes: Say I'm running a FreeBSD webserver (w/apache). I've managed to close ALL open ports (including SSH/telnet and portmapper), excepting '80' that apache is listening on. A netstat -a shows me nothing open. Discounting DoS/DDoS or holes in... (7 Replies)
Discussion started by: adam_crosby
7 Replies

2. IP Networking

Closing out ports???

Hi all Is there a command that I can use to close out open ports? I did a netstat - a -p and got a long list of ports open (see sample below). I have disabled the some of the applications from /etc/services/. But there are still applications listening on certain ports. I need to know how to... (6 Replies)
Discussion started by: skotapal
6 Replies

3. Shell Programming and Scripting

Check open ports every ...

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)
Discussion started by: MorchiuS
2 Replies

4. Solaris

open ports solaris 8

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
1 Replies

5. Solaris

Open ports in solaris 10

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

6. Shell Programming and Scripting

closing unwanted open ports using scripts

i have a text file i.e file1.txt which shows open ports on particular system. i have another text file i.e file2.txt which shows a list of allowed ports on a system. for eg: file2.txt 22/tcp ssh 23/tcp telnet. can i have a script which would compare these text files ,file1 and file2 ... (1 Reply)
Discussion started by: anand121
1 Replies

7. UNIX for Dummies Questions & Answers

open ports and services

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
1 Replies

8. IP Networking

Open/close of ports

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)
Discussion started by: balamv
1 Replies

9. Shell Programming and Scripting

Closing open file descriptors from /proc/pid/fd

Hi guys, i need to write a shell script that will close file descriptors from /proc/pid/fd will calling exec 4<&- solve the problem ? thanks in advance :) (15 Replies)
Discussion started by: alpha_romeo
15 Replies
SSH-COPY-ID(1)						    BSD General Commands Manual 					    SSH-COPY-ID(1)

NAME
ssh-copy-id -- copy public keys to a remote host SYNOPSIS
ssh-copy-id [-lv] [-i keyfile] [-o option] [-p port] [user@]hostname DESCRIPTION
The ssh-copy-id utility copies public keys to a remote host's ~/.ssh/authorized_keys file (creating the file and directory, if required). The following options are available: -i file Copy the public key contained in file. This option can be specified multiple times and can be combined with the -l option. If a private key is specified and a public key is found then the public key will be used. -l Copy the keys currently held by ssh-agent(1). This is the default if the -i option was not specified. -o ssh-option Pass this option directly to ssh(1). This option can be specified multiple times. -p port Connect to the specified port on the remote host instead of the default. -v Pass -v to ssh(1). The remaining arguments are a list of remote hosts to connect to, each one optionally qualified by a user name. EXIT STATUS
The ssh-copy-id utility exits 0 on success, and >0 if an error occurs. EXAMPLES
To send a specific key to multiple hosts: $ ssh-copy-id -i /path/to/keyfile.pub user@host1 user@host2 user@host3 HISTORY
The ssh-copy-id utility was written by Eitan Adler <eadler@FreeBSD.org> as a drop-in replacement for an existing utility included with OpenSSH. BSD
February 28, 2014 BSD
All times are GMT -4. The time now is 06:31 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy