Sponsored Content
Full Discussion: Ports
Top Forums UNIX for Advanced & Expert Users Ports Post 302315517 by pludi on Tuesday 12th of May 2009 02:31:19 PM
Old 05-12-2009
Usually, it should be necessary to register a port in /etc/services, except maybe to ensure that everyone knows which are already assigned to an application, but for the OS there should be little difference.

Do you perhaps have control of a test machine, that has no firewall or similar enabled, in order to check whether or not your program runs correctly.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

ports

how can i check to see if my mail ports are open (port 110 for incoming and 25 for outgoing)? I want to do this because i am having a problem sending email out. If one of the ports has a problem, how can i open it? Thanks in advance! (9 Replies)
Discussion started by: djatwork
9 Replies

2. UNIX for Dummies Questions & Answers

Ports

How To Close ports,for example finger port 79?? :confused: :confused: :confused: 10x (6 Replies)
Discussion started by: Yaki
6 Replies

3. UNIX for Dummies Questions & Answers

Ports

I know i can look in the /etc/services file to look at referenced port numbers, but is there a command that will list the current ports being used? (i.e. what is the application does not have an entry in the services files :confused: ) (2 Replies)
Discussion started by: Ralf
2 Replies

4. IP Networking

ports???

Ok, I've been working in the IT field for about 3 years now and I never fully understood the concept of ip ports. I just started a new job that uses Solaris and today it kinda clicked in my head and I want to know if I'm right or wrong. Does each ip address have multiple ports. because we... (4 Replies)
Discussion started by: eloquent99
4 Replies

5. IP Networking

Ports

What are some good sites that list all TPC/UDP ports? ~thanks (3 Replies)
Discussion started by: ireeneek
3 Replies

6. UNIX for Dummies Questions & Answers

Ports...

Hello UNIX people... This is my first foray into the UNIX world so go easy on me... I have a client who has hired me to do some work on his windows stuff, BUT it just so happens his UNIX server started giving him problems... He is running SCO Open Server 5.0.6 The TTY ports won't... (5 Replies)
Discussion started by: TechKnow
5 Replies

7. HP-UX

Ports

Can any one tell the command for which process are running on a perticular port (1 Reply)
Discussion started by: zsujith
1 Replies

8. Solaris

regarding ports

Hi , I need one help... Is there any command on solaris 10 to free the ports. For e.g I used netstat -na| grep 8080 it displays either it is listening or established.. i want to free the ports... Anyone please help me on this... Thanks, Shanmuga (2 Replies)
Discussion started by: shanshine
2 Replies

9. Solaris

ports

Hi, If for example i try to start tomcat in a solaris server and get errors related to address already in use, how can I know if this port is really used for another process? If someone can point any documentation it will be very helpfull. Thanks! :rolleyes: (9 Replies)
Discussion started by: ffpradella
9 Replies

10. UNIX for Dummies Questions & Answers

ports

When the netstat -an command is run on current unix machine, it seems that there's an excessive amount of ports established (roughly 600). How can I tell what each of these ports are being used for? (1 Reply)
Discussion started by: lastchance551
1 Replies
FIREWALLD(1)							     firewalld							      FIREWALLD(1)

NAME
firewalld - Dynamic Firewall Manager SYNOPSIS
firewalld [OPTIONS...] DESCRIPTION
firewalld provides a dynamically managed firewall with support for network/firewall zones to define the trust level of network connections or interfaces. It has support for IPv4, IPv6 firewall settings and for ethernet bridges and has a separation of runtime and permanent configuration options. It also supports an interface for services or applications to add firewall rules directly. OPTIONS
These are the command line options of firewalld: -h, --help Prints a short help text and exists. --debug[=level] Set the debug level for firewalld to level. The range of the debug level is 1 (lowest level) to 10 (highest level). The debug output will be written to the firewalld log file /var/log/firewalld. --debug-gc Print garbage collector leak information. The collector runs every 10 seconds and if there are leaks, it prints information about the leaks. --nofork Turn off daemon forking. Force firewalld to run as a foreground process instead of as a daemon in the background. --nopid Disable writing pid file. By default the program will write a pid file. If the program is invoked with this option it will not check for an existing server process. CONCEPTS
firewalld has a D-BUS interface for firewall configuration of services and applications. It also has a command line client for the user. Services or applications already using D-BUS can request changes to the firewall with the D-BUS interface directly. For more information on the firewalld D-BUS interface, please have a look at firewalld.dbus(5). firewalld provides support for zones, predefined services and ICMP types and has a separation of runtime and permanent configuration options. Permanent configuration is loaded from XML files in /usr/lib/firewalld or /etc/firewalld (see the section called "DIRECTORIES"). If NetworkManager is not used, there are some limitations: firewalld will not get notified about network device renames. If firewalld gets started after the network is already up, the connections are not bound to a zone. Manually created interfaces are not bound to a zone. Please add them to a zone with firewall-cmd --zone=zone --add-interface=interface. Zones A network or firewall zone defines the trust level of the interface used for a connection. There are several pre-defined zones provided by firewalld. Zone configuration options and generic information about zones are described in firewalld.zone(5) Services A service can be a list of local ports and destinations and additionally also a list of firewall helper modules automatically loaded if a service is enabled. Service configuration options and generic information about services are described in firewalld.service(5). The use of predefined services makes it easier for the user to enable and disable access to a service. ICMP types The Internet Control Message Protocol (ICMP) is used to exchange information and also error messages in the Internet Protocol (IP). ICMP types can be used in firewalld to limit the exchange of these messages. For more information, please have a look at firewalld.icmptype(5). Runtime configuration Runtime configuration is the actual active configuration and is not permanent. After reload/restart of the service or a system reboot, runtime settings will be gone if they haven't been also in permanent configuration. Permanent configuration The permanent configuration is stored in config files and will be loaded and become new runtime configuration with every machine boot or service reload/restart. Direct interface The direct interface is mainly used by services or applications to add specific firewall rules. The rules are not permanent and need to get applied after receiving the start, restart or reload message from firewalld using D-BUS. DIRECTORIES
firewalld supports two configuration directories: Default/Fallback configuration in /usr/lib/firewalld This directory contains the default and fallback configuration provided by firewalld for icmptypes, services and zones. The files provided with the firewalld package should not get changed and the changes are gone with an update of the firewalld package. Additional icmptypes, services and zones can be provided with packages or by creating files. System configuration settings in /etc/firewalld The system or user configuration stored here is either created by the system administrator or by customization with the configuration interface of firewalld or by hand. The files will overload the default configuration files. To manually change settings of pre-defined icmptypes, zones or services, copy the file from the default configuration directory to the corresponding directory in the system configuration directory and change it accordingly. For more information on icmptypes, please have a look at the firewalld.icmptype(5) man page, for services at firewalld.service(5) and for zones at firewalld.zone(5). SIGNALS
Currently only SIGHUP is supported. SIGHUP Reloads the complete firewall configuration. You can also use firewall-cmd --reload. All runtime configuration settings will be restored. Permanent configuration will change according to options defined in the configuration files. SEE ALSO
firewall-applet(1), firewalld(1), firewall-cmd(1), firewall-config(1), firewalld.conf(5), firewalld.direct(5), firewalld.icmptype(5), firewalld.lockdown-whitelist(5), firewall-offline-cmd(1), firewalld.richlanguage(5), firewalld.service(5), firewalld.zone(5), firewalld.zones(5) NOTES
firewalld home page at fedorahosted.org: http://fedorahosted.org/firewalld/ More documentation with examples: http://fedoraproject.org/wiki/FirewallD AUTHORS
Thomas Woerner <twoerner@redhat.com> Developer Jiri Popelka <jpopelka@redhat.com> Developer firewalld 0.3.9 FIREWALLD(1)
All times are GMT -4. The time now is 08:52 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy