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Questions tagged [rpc]

A remote procedure call (RPC) is an inter-process communication that allows software to cause a subroutine or procedure to execute on another computer.

A remote procedure call (RPC) is an inter-process communication that allows software to cause a subroutine or procedure to execute on another computer without the programmer explicitly coding the details for the remote interaction.

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netstat shows a listening port with no pid but lsof does not

This question is similar to Network port open, but no process attached? I've tried everything from there, reviewed the logs, etc... and can't find anything. My netstat shows a TCP listening port and a UDP port without a pid. When I search lsof for…
mhost
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What is the sequence of Windows RPC ports 135, 137, 139 (and higher ports)? What changes with Port 145?

Can someone explain when and how often each of the Windows RPC ports are used? The "core" ones I understand are: Port 135 Port 137 Port 139 Higher ports that are published by Port 135's "catalog" Then I heard that Port 145 came into the mix to…
makerofthings7
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What causes repeated linux NFS client side RPC credential refreshing?

Using nfsstat -c, I'm seeing a high "authrefrsh" (known as "newcred" on some systems) count on my NFS client pc for operations like ls and find on directories containing ~1000 files. This correlates with very poor performance (20+ minute directory…
Chris Betti
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NFSv4 not able to set any sockets for nfsd without running rpcbind

According to Red Hat docs 'rpcbind' is not required any more: Because protocol support has been incorporated into the v4 protocol, NFSv4 has no interaction with the portmap, rpc.lockd, and rpc.statd daemons. NFSv4 listens on the well-known TCP…
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Can't mount CentOS NFS share on Windows 10 - "Network Error - 53"

I have a CentOS 8 virtual machine (192.168.10.203) running nfs-server, and I'm trying to mount the share on my Windows 10 Pro x86_64 machine (192.168.10.10) I have installed the "Services for NFS" Windows feature), but when I run mount…
rst-2cv
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NFS: What is remote locking, and do I need it?

I'm building a somewhat minimalistic system that collects serial port data and shoves it into a logfile on an NFS mount. In an effort to reduce the system somewhat I decided to disable RPC as I couldn't see the use for it, and this resulted in the…
Jarmund
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Windows Server 2012 member server reports - there is a time or date difference between your computer and the remote computer

PROBLEM Domain member service reports the following when attempting to RDP from any Windows 10 workstation on the same domain or any Windows client from an external source: Remote Desktop cannot verify the identity of the remote computer because…
scott_lotus
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NIS failing to bind

I have a bunch of machines which authenticate via NIS to a central server. I just bought a new CentOS 6.2 client machine, and it can't authenticate. The following is a list of the classics people get wrong/forget when dealing with NIS: 1) The…
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rpcbind - is there really no way to make the tcp ports bind to a specific interface / can nfs be ran without rpcbind?

We would like to move away from sshfs to nfs. The last thing holding us back is the fact that rpcbind (which I assume is required for nfs to work) does not allow you to specify the TCP (not UDP) IP that it binds to. There is the -h flag, but this is…
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Why is rpc.lockd obscured from netstat/lsof output?

Prologue: On a number of machines, which happen to act as NFS clients, netstat reports two ports that are open with no PID listed for an associated daemon. Ordinarily this might be a bit concerning. # netstat -lnp | egrep -- '- +$' tcp 0 …
Dan Carley
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How to block 111 udp port via iptables?

I've got an issue related to block 111 port only for udp. For tcp it was blocked without any problem. This port is used by application rpcbind. I test it via netcat. This is my iptables. It contains empty chain FORWARD, because I've removed all…
ANtlord
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How do I shut down a Windows XP box remotely from a Linux box?

I have Windows XP running in virtual machines connected to my local network for testing purposes. The tests are done remotely. When finished, I want to shut them down remotely, from a Linux box. ETA: Note that the Windows box runs XP Home, so there…
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netlogon errors

I have two instances of mssql 2005 and am using CA XOSoft replication. The master is a failover cluster and the replica is a standalone server. They are all running Server 2003 sp2 x64. Same patch levels on all servers. This setup has worked great…
rorr
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What is msrpc needed for on a Windows 7 workstation

I just ran an nmap scan against our network, and many Windows 7 machines have several high ports listening with Microsoft Windows RPC. Example: Port Serv Process name 49152, msrpc [wininit.exe] 49153, msrpc [svchost.exe, Eventlog] 49154, msrpc…
Jim Balo
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What is launching all of these rpc.statd processes?

On of our servers -- running CentOS 6 x86_64 -- we're seeing a lot unusual activity with rpc.statd. We have rpc.statd configured to run on a static port via /etc/sysconfig/nfs: MOUNTD_PORT=892 STATD_PORT=662 QUOTAD_PORT=875 And this does result in…
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