05-20-2002
ports and services
hello all,
in order for me to close ports and remove services that could be a danger to my system i have edited the /etc/initd.conf file, /etc/system file, and renamed some of the r commands. However i wanted to know if anyone knows how to turn off all services and close ALL known ports, so i can open them as i go forward with my installation of new apps etc, etc.
This is Solaris 8 system on a sparc machine
Thanks for your time in advance
Holistic
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
When I scan my linux box for open ports, i have several of them, but they shouldn't be open. I removed the lines for them in /etc/services, and left just stuff like telnet, ssh, ftp. Why are they still open? I've restarted the network, and I've even restarted my box, but they still apear as open.... (4 Replies)
Discussion started by: sTorm
4 Replies
2. IP Networking
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
3. IP Networking
What are some good sites that list all TPC/UDP ports? ~thanks (3 Replies)
Discussion started by: ireeneek
3 Replies
4. UNIX for Dummies Questions & Answers
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
5. Solaris
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
6. UNIX for Dummies Questions & Answers
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
7. 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
1 Replies
8. Red Hat
I had a doubt if any services need to be restarted if port no in /etc/services in an RHEL setup is changed. For eg, the port no of 443 for SSL may need to be changed.
I hope my query is clear whether any services need to be restarted if port no in /etc/services is changed.
Please revert with... (10 Replies)
Discussion started by: RHCE
10 Replies
9. Shell Programming and Scripting
Hi,
I just started working on a script. After my research, i found a command which can help me:
AIM: To build a script which starts the services (Services 1) on server 1 automatically whenever its down. And it has a dependency on other service (Service 2) on Server 2.
So my script has to... (4 Replies)
Discussion started by: draghun9
4 Replies
10. Linux
Hi Team,
I am using RHEL 7.3.
I had added few port numbers in
/proc/sys/net/ipv4/ip_local_reserved_ports.
Now how do I verify that kernel does not allow to a service which requests random ports for its services.
Thanks in Advance
Hariharan Gopal (0 Replies)
Discussion started by: hariharan.gopal
0 Replies
LEARN ABOUT CENTOS
portreserve
PORTRESERVE(1) TCP port reservation utility PORTRESERVE(1)
NAME
portreserve - reserve ports to prevent portmap mapping them
SYNOPSIS
portreserve
DESCRIPTION
The portreserve program aims to help services with well-known ports that lie in the bindresvport range. It prevents portmap (or other
programs using bindresvport) from occupying a real service's port by occupying it itself, until the real service tells it to release the
port (generally in its init script).
It is intended that portreserve runs from an initscript of its own, and services wishing to interact with it should use portrelease.
When the portreserve daemon is started, it examines the /etc/portreserve/ directory. Each file not containing "." or "~" in its name is
considered to be a service configuration file, and must contain a service name (as listed in /etc/services) or a port number. UDP services
may be specified by appending "/udp" to the service name, and TCP services by "/tcp". Several services may be specified, one per line.
For example, /etc/portreserve/cups might contain the string "ipp" or, equivalently, "ipp/tcp" and "ipp/udp" on separate lines.
For each service configuration file, a socket is created and bound to the appropriate port. A service wishing to bind to its port must
first run portrelease, which instructs portreserve to release the port associated with the service.
Once all the reserved ports have been released, the daemon exits.
FILES
/etc/portreserve/*
Service configuration files
/var/run/portreserve/socket
communication socket for portrelease
SEE ALSO
portrelease(1)
AUTHOR
Tim Waugh <twaugh@redhat.com>
Author.
portreserve 1 July 2008 PORTRESERVE(1)