How to nfs mount on mac

About 3 months ago from Laurence Muller's Twitter. Standard Mobile. A quality product from. Linux Ubuntu — Server Install NFS support: sudo apt-get install nfs-kernel-server nfs-common portmap When you configuring portmap, do not bind the loopback!


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Change the Target Connection ip address to your server IP e. Make sure Devices is set to the correct item e.

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Configure the automount on the NFS client

Site content copyright Laurence Muller. The purpose of this line of code is to read a file handle fh from a reply message nmrep that was sent back to the Mac by the NFS server. A file handle is an opaque identifier for a file or directory on the NFS share. There is no bounds check, so an attacker could overwrite an arbitrary amount of kernel heap with any sequence of bytes that they choose.

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Mounting An NFS Share On MACOS

But it uses the original value of LEN in the call to bcopy. This will of course cause an immediate kernel crash, so it could only be used as a denial of service attack. One of QL's great strengths is its ability to find variants of known bugs. I published a blog post about those vulnerabilities and the query that found them. That query was designed to look for calls to bcopy that might have a user-controlled size argument that might be negative. A simple variation is to look for calls to bcopy where the source buffer is user controlled.

Mount an NFS Share on a Mac using the Terminal

Such calls are potentially interesting, because they copy user-controlled data into kernel space. The above query is rather simplistic, because it looks for any call to bcopy that copies data from an mbuf into kernel space.

There's nothing wrong with such calls, as long as the bounds of the size parameter are properly checked. So, despite the simplicity of this query, it finds a number of important security vulnerabilities. In its current form, the query will continue to report the same results even after the bugs are fixed.

It would be nice to improve the query so that it won't report a result when there is a proper bounds check in place. It uses the Guards library to find size expressions that are used in a control flow location that is controlled by guard. It then uses the globalValueNumber library to check that the same size expression occurs in the condition itself.

Mounting NFS shares on Mac OS X | Unix Tutorial

The GlobalValueNumbering library enables the predicate to detect the equality of non-trivial size expressions like this:. Finally, it uses a utility named relOpWithSwapAndNegate to check that the size expression is less than the limit. It enables the predicate to also handle scenarios like this:.

The other way that bounds checks are sometimes implemented is by calling min , as detected by this predicate:. Note that I have also used lowerBound to make sure that there is no chance of a negative integer overflow. The only remaining thing to do is to use checkedSize in the isSink method, to reduce the number of false positives. This is the finished query:.

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Ex: ip server Home Questions Tags Users Unanswered. Ask Question. I cannot figure out why this doesn't work. What should I do?


  • Step 2: To mount this share from Mac2.
  • Prerequisites.
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  • Eonil Eonil 1, 7 7 gold badges 22 22 silver badges 32 32 bronze badges. Cas Cas 1, 1 1 gold badge 13 13 silver badges 15 15 bronze badges. Was having this same issue; the resvport option works fine if you only plan on mounting via the CLI. If you want to mount via Mac OS X's finder, you need to add the insecure option on the server side, as Cas mentions.