Linux - NetworkingThis forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.
Notices
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use.
Exclusive for LQ members, get up to 45% off per month. Click here for more info.
Gave this command in the terminal to check what ports were open:
This is the result:
Quote:
111/tcp open rpcbind
631/tcp open ipp
ipp has to do with printing but I don't understand why this port is open because I am not printing.
I don't understand why rpcbind is open and what it precisely stands for.
Gave this command in the terminal to check what ports were open:
This is the result:
ipp has to do with printing but I don't understand why this port is open because I am not printing.
I don't understand why rpcbind is open and what it precisely stands for.
Try netstat -lpn to see which processes are listening on those ports.
rpcbind belongs to NFS.
Netstat -lpn doesn't return anything valuable:
I tried to remove rpcbind though:
Quote:
sudo apt-get remove portmap
Reading package lists... Done
Building dependency tree
Reading state information... Done
Note, selecting 'rpcbind' instead of 'portmap'
The following packages were automatically installed and are no longer required:
nfs-kernel-server samba-doc smartmontools
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
ecmporter@probe:~$ sudo apt-get autoremove
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
nfs-kernel-server samba-doc smartmontools
0 upgraded, 0 newly installed, 3 to remove and 1 not upgraded.
After this operation, 15.6 MB disk space will be freed.
Do you want to continue [Y/n]? Y
(Reading database ... 174169 files and directories currently installed.)
Removing nfs-kernel-server ...
Stopping NFS kernel daemon: mountd nfsd.
Unexporting directories for NFS kernel daemon....
Removing samba-doc ...
Removing smartmontools ...
Stopping S.M.A.R.T. daemon: smartd.
Processing triggers for man-db ...
but after rebooting it is back.
Is this a security issue?
Port 631 is open for the CUPS daemon. It is used to administer CUPS via the browser interface by entering http://localhost:631 in the address bar.
As has already been stated, rpcbind is part of NFS.
These ports are legitimately open in your system.
For security assessment, you need to scan from another host to find what ports are available externally. Using the Gibson Research ShieldsUP! web page is one way of doing this.
LinuxQuestions.org is looking for people interested in writing
Editorials, Articles, Reviews, and more. If you'd like to contribute
content, let us know.
