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Questions tagged [ipc]

18 questions
6
votes
2 answers

How to remove a "door" in solaris

I have a file of type "door" in solaris 10 (that is a means of interprocess communication). It is somehow left over and I would like to get rid of it. I can not just remove it with rm ... ls -l total 0 Dr--r--r-- 1 root root 0 Oct 12…
Isaac
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6
votes
2 answers

What are the semaphore arrays on Linux?

I understand semaphores, but what are these semaphore arrays being used on my Linux box? $ ipcs ------ Shared Memory Segments -------- key shmid owner perms bytes nattch status 0x00000000 327681 root …
Lazer
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4
votes
1 answer

Windows tries to access the IPC$ share before the provided one

I have a samba server where I have disabled access to the IPC$ share [1] for security reasons (users and shares enumeration, user info query, ...). I can access the data shares on this server without problem from any Unix based computer with…
spongebob
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3
votes
1 answer

How to see nginx's shared memory usage

I'm investingating nginx's cache mechanism. I set the following in my nginx.conf. fastcgi_cache_path /run/nginx-cache levels=1:2 keys_zone=PHP_CACHE:4m inactive=5m max_size=1m; By keys_zone=PHP_CACHE:4m, nginx should allocate 4 MiB of shared…
aosho235
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3
votes
2 answers

Munin mysql plugins results inconsistent, with IPC::Sharelite store() error: Identifier removed

I've recently setup a munin-node on a CentOS server. All was working fine until I tried to add the apache plugin (which works fine). For some odd reason, the mysql plugins for munin that used to work ceased to work... I'm now getting a weird error…
tomzx
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2
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1 answer

Permission needed for Named pipes on Windows 2008

Are there any special permissions needed for domain service account running a windows service which receives messages over named pipes? Hosting environment is Windows Server 2008. Background: We have two processes communicating over named pipes. Our…
Ladislav Mrnka
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2
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1 answer

Centos System V IPC message queue limits

[Although I'm working in perl I believe that this question relate to Linux System V IPC APIs and limits rather that the anything perl-specific.] I have two Centos machines, each at CentOS Linux release 7.9.2009 (Core). I have a program that forks a…
djna
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1
vote
1 answer

How can I get Certbot to run after unresponsive login session?

A login session (under Jessie) running certbot -d example.com -d www.example.com froze, and when I tried to run Let's Encrypt's certbot from another session, it said, "Another instance of Certbot is already running." I did a kill -HUP on the…
Christos Hayward
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1
vote
1 answer

Simpliest unix non-blocking "broadcast" socket

I have non-regularly running program which outputs string, I need to send this output to some kind of socket which can be distributed out of docker container and which can be listened by multiple listeners or even none. I know standard FIFO named…
user2216697
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1
vote
2 answers

Windows 7 uses always IPC$ as path when connecting to a samba share

I have a smb share : \mysmb\www When connection from Windows XP all runs fine. When connecting from Windows 7 I got an error like 'wrong password'. In smbd log I can see : Invalid username/password for [IPC$] I think this means that Windows7…
thorsten
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1
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3 answers

Unix domain socket firewall

I've got a problem with my debian server. Probably there is some vulnerable script at my web-serser, which is running from www-data user. I also have samba with winbind installed, and samba is joined to windows domain. So, probably this vulnerable…
lagab
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0
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1 answer

Fail2ban only works with log files?

What about Unix sockets? I have created my own server application that needs protection. My two options: Creating a log file for fail2ban to watch Establish networking between my server application and fail2ban (Unix sockets)
m0p3r
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0
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1 answer

Google compute engine UDP service only accessible from external IPs

I have a small and simple UDP server that's been working in several hosting places for years. I just created a new vm in the google cloud, a Compute Engine, with linux. Default settings for a small machine (f1-micro (1 vCPU, 0.6 GB memory) CPU…
jaime
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0
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1 answer

Symantec Backup Exec and connecting to IPC shares?

I am hoping to be able to have Symantec Backup Exec (2010) connect to some Windows machines via their IPC shares for backup. It seems to work for a couple machines I tried, but several others it's not. For example, I was able to add a user defined…
Scott Szretter
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0
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1 answer

Logging events from a remote machine

I have a setup where a process logs the current of the outlet of a power distribution unit (it's a Schleifenbauer PDU and a gateway). It polls continuously the values and writes them to a file with the corresponding time stamps. Now I want to launch…
Javier Ruiz
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