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Operating Systems AIX Source port on AIX for NAS is same? Post 303018983 by Scrutinizer on Wednesday 20th of June 2018 02:30:25 PM
Old 06-20-2018
Quote:
Originally Posted by anil1000
Well, we talked with Firewall team as well, but they are saying that it is the normal behavior of the firewall to drop the packets rather than sending reset.
That is a matter of choice. To drop packets is more so legitimate in an Internet facing situation, but if you are using it for internal segmentation dropping will break stuff, while a reject is more graceful. There are pros and cons, but it is not "normal behavior" in the sense that it is the only possibility.

Besides this, there are options to keep connections alive, to change timeouts or to make the time longer before the firewall interferes.

Quote:
Another plan of action to resolve this issue is
Plan 1
keep both NAS IP and Storage LIF IP in same VLAN and don't keep any firewall in between. (currently both NAS IP and Storage LIF IP are in different VLAN with firewall in between)

but I would like to know
Plan 2
What if we keep the same setup with communication happening from random source ports from client end to storage LIF ports with firewall in between,

which will be more secure plan 1 or Plan 2?


Thanks
With plan 2 I think you may still have the problem once in a while. just less frequently. I personally would typically avoid sharing NFS through a firewall, unless you are using NFS with Kerberos. If you are using standard NFS with auth_sys authentication then in my opinion that is usually not a very secure situation and using reserved ports is not going to help that. But even with all that you described I do not know enough about your situation...

Last edited by Scrutinizer; 06-20-2018 at 04:49 PM..
 

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scconf_quorum_dev_netapp_nas(1M)			  System Administration Commands			  scconf_quorum_dev_netapp_nas(1M)

NAME
scconf_quorum_dev_netapp_nas - add and remove shared Network Appliance network-attached storage (NAS) quorum devices and change various NAS cluster quorum configuration properties or states. SYNOPSIS
scconf {-a|-c|-r} -q name=devicename otheroptions DESCRIPTION
Note - Beginning with the Sun Cluster 3.2 release, Sun Cluster software includes an object-oriented command set. Although Sun Cluster software still supports the original command set, Sun Cluster procedural documentation uses only the object-oriented command set. For more infor- mation about the object-oriented command set, see the Intro(1CL) man page. A Network Appliance NAS device can be configured as a quorum device for Sun Cluster. The NAS configuration information consists of: o a device name, which must be unique across quorum devices o a filer name, which defaults to the device name if not specified o a LUN ID, which defaults to 0 if not specified To provide support for NAS devices as quorum devices, the administrator must install the quorum device support module provided by Network Appliance. If this module is not available, scconfprevents the addition of the quorum device. See Sun Cluster With Network-Attached Storage Devices Manual for Solaris OS for instructions about obtaining the support module. Additionally, the iSCSI license must be valid for the Network Appliance device. OPTIONS
The following options can be used for NAS quorum devices. See scconf(1M) for the list of supported generic options. See scconf_quo- rum_dev_netapp_nas(1M) for options that are specific to shared disk quorum devices. The add and remove forms of the command are used to add and remove NAS quorum devices to or from the configuration. The change form of the command is used for changing various properties of cluster quorum configuration. Before you add a quorum device, you must set up and configure the device and the logical unit number (LUN) on the device to be configured as a quorum device. For detailed procedures, see your Network Appliance documentation. For Sun Cluster requirements of device setup, see Sun Cluster With Network-Attached Storage Devices Manual for Solaris OS. After the quorum device is added, you cannot change the type. Add a NAS quorum device: -q -a name=devicename,type=netapp_nas[,filer=filer-name][,lun_id=0] Change a NAS quorum device's configuration: -q -c name=devicename,{maintstate | reset} Remove a NAS quorum device: -q -r name=devicename The -q option supports the following Network Appliance NAS-specific suboptions: filer=filer-name Specifies the name of the device on the network that you can use to access the NAS device when you are using rsh or telnet. lun_id=0 Specifies the LUN ID on the NAS device that will be a NAS quorum device. The LUN ID defaults to 0. When scconf is interrupted or fails while performing quorum-related operations, quorum configuration information can become inconsistent in the cluster configuration database. If an inconsistency occurs, either run the same scconf command again or run it with the reset option to reset the quorum information. EXAMPLES
Example 1 Adding Network Appliance NAS Quorum Devices The following scconf command adds the Network Appliance NAS quorum device qd1. -a -q name=qd1,type=netapp_nas,filer=nas1.sun.com,lun_id=0 Example 2 Removing Network Appliance NAS Quorum Devices The following scconf command removes the Network Appliance NAS quorum device qd1. -r -q name=qd1 ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWsczu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
Intro(1CL), clquorum(1CL), cluster(1CL), scconf(1M), scconf-quorum-dev-scsi(1M) Sun Cluster 3.2 10 Apr 2006 scconf_quorum_dev_netapp_nas(1M)
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