04-08-2011
Can you provide me the nfs reserved ports value ?
nfso -a | grep nfs_use_reserved_ports
If nfs_use_reserved_ports=0 AIX server uses nonreserved IP port numbers above 1024 when the NFS client communicates with the NFS server.
If nfs_use_reserved_ports=1 AIX server uses nonreserved IP port numbers below 1024
when the NFS client communicates with the NFS server.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Just starting to work with unix, wondering if there is any good on-line documentation explaining TCP/UDP ports, how to use them, etc...
Thanks.... (1 Reply)
Discussion started by: eugene_mayo
1 Replies
2. IP Networking
Just wondering if anyone knows of any good on-line documentation on TCP/UDP Ports. Basically i want to know how to check if they are in use, learn how to close them, etc...
Thanks... (5 Replies)
Discussion started by: eugene_mayo
5 Replies
3. UNIX for Advanced & Expert Users
3600 tcp/udp, trap-daemon, text relay-answer
Does anyone know what this service is responsible for, or how significant it is?
Thanks.....James (1 Reply)
Discussion started by: cassj
1 Replies
4. UNIX for Dummies Questions & Answers
Hi,
Users are connecting thru a KCML Client to UNIX machine, and I want to know which TCP/UDP port that client uses? How can I check the port of a user logged in?
Regards,
Tayyab (2 Replies)
Discussion started by: tayyabq8
2 Replies
5. AIX
Looking at /etc/services on AIX 6.1, I noticed some bizarre port numbers which exceed the 16-bit maximum port number for TCP (i.e. they are higher than 65535.)
sco_printer 70000/tcp sco_spooler # For System V print IPC
sco_s5_port 70001/tcp lpNet_s5_port ... (5 Replies)
Discussion started by: garethr
5 Replies
6. UNIX for Advanced & Expert Users
I use forwarders for a subzone, but TCP 53 is blocked, So does forwarders really need TCP?
If forwaders use UDP, I can't get following scenario to work:
main zone is master, but subzone is forwad. Is it possible?
(On name sever itself, resolution of xx.stub.abc.com worked fine.)
#sub zone... (2 Replies)
Discussion started by: honglus
2 Replies
7. Infrastructure Monitoring
hi guys
My linux server have SNMP configure port by default is 161 (UDP)
now my monitor team - who are using Nagios - say the server are not being monitor
so check netstat -lnu and I see all is OK and snmp service is running fine
what else should I check about this port 161? to see if it is... (0 Replies)
Discussion started by: karlochacon
0 Replies
8. Shell Programming and Scripting
We have open port UDP port 31011, how to verify if port were working or traffic were receive. (2 Replies)
Discussion started by: avtalan
2 Replies
9. IP Networking
i want to kill a tcp connection by killing its pid
with netstat -an i got the tcp ip connection on port 5914
but when i type ps -a or ps-e there is not such process running on port 5914
is it possible that because i do not log on with proper user account i can not see that process running? (30 Replies)
Discussion started by: alinamadchian
30 Replies
10. UNIX for Beginners Questions & Answers
hi,
i would like to create a bash script that check which port in my Linux server are closed (not in use) from a specific range, port range (3000-3010).
the print output need to be only 1 port, and it will be nice if the output will be saved as a variable or in same file.
my code is:
... (2 Replies)
Discussion started by: yossi
2 Replies
LEARN ABOUT HPUX
nfs_portmon
nfs_portmon(5) File Formats Manual nfs_portmon(5)
NAME
nfs_portmon - enable/disable the NFS server's source port verification check
VALUES
Failsafe
Default
Allowed values
DESCRIPTION
controls some security checking that the NFS server can do in an attempt to enforce integrity on the part of its clients. The NFS server
can check to see whether the source port from which a request was sent is a reserved port; a reserved port is a port whose port number is
less then 1024. For BSD-based systems, these ports are reserved for processes being run by privileged users. This checking helps prevent
users from writing their own RPC-based applications which defeat the access checking that the NFS server uses.
Who Is Expected to Change This Tunable?
The distributed file system administrator should examine the value of this parameter if he or she wishes to prevent malicious users from
gaining access to files by using an NFS server they would not ordinarily be able to access.
Restrictions on Changing
The tunable is dynamic; any change will take effect immediately on the running system.
The reserved port notion is not universally supported. Therefore, interoperability problems might result if this checking is enabled.
What Are the Side Effects of Enabling This Check?
Some NFS clients may not be able to connect to the NFS server.
WARNINGS
All HP-UX kernel tunable parameters are release specific. This parameter may be removed or have its meaning changed in future releases of
HP-UX.
Installation of optional kernel software, from HP or other vendors, may cause changes to tunable parameter values. After installation,
some tunable parameters may no longer be at the default or recommended values. For information about the effects of installation on tun-
able values, consult the documentation for the kernel software being installed. For information about optional kernel software that was
factory installed on your system, see at
AUTHOR
was developed by Sun Microsystems, Inc.
SEE ALSO
kctune(1M), sam(1M), gettune(2), settune(2).
Tunable Kernel Parameters nfs_portmon(5)