OpenBSD is a BSD variant with a strong security and code correctness focus.

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How can I install OpenBSD using the serial console, without external monitor? With a bootable USB stick?

How can I install OpenBSD on my HP Server using the serial console, without external monitor? I have no monitor in the Datacenter, but I have my Laptop with Debian/GNU/Linux. So far so good. How do ...
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11 views

BPDU protection with Transparent OpenBSD 6.0-current Firewall Bridge

Is it possible with OpenBSD? I would like to implement BPDU protection and filerting with my Transparent OpenBSD 6.0-current Firewall Bridge, and loop protection with rstp Is the ...
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33 views

Is it possible? Three OpenBSD 6.0-current firewall bridges with only one OpenBSD Server?

Is it possible to configure several firewall bridges with one OpenBSD server which has 6 nic's. In this case 3 OpenBSD firewall bridges from each other completely independent? cat /etc/sysctl.conf ...
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18 views

OpenBSD Remote Desktop

Does OpenBSD have a built-in remote desktop server? If not, what is the most preferred remote desktop server people run on OpenBSD?
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2answers
31 views

Applying NAT to traffic from GRE tunnel in OpenBSD PF

All I have a Cisco 877 router and a Linode VPS running OpenBSD 5.9 with a GRE tunnel running in between, which works great and I can ping from either side. I have set up a static route in the Cisco ...
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opensmtpd - configuration for sending email only

So what do I want for a unix server (OpenBSD 5.9 for the record): smtpd is OpenSMTPD 5.9.1 send email to the "Internet" from local users with "from" in enveloppe and "From:" headers to be of the ...
2
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1answer
496 views

How to move the /var/www directory to a USB HDD?

I have a default OpenBSD 5.1 install. How Can I enabled httpd, OK. QUESTION: How can I use the /dev/sd0a on /mnt/usbhdd type ffs (local, nodev) instead of the default "/var/www" directory? What ...
2
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1answer
843 views

PDF reader for OpenBSD that has default disabled JAVA/JavaScript/etc.?

I'm searching for a PDF reader that doesn't supports Java, JavaScript in PDF files (and other unneeded things what is only used in 1% of the PDF files, but can cause security issues). Or there isn't ...
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2answers
29 views

OpenBSD - X Window system - no choice on reinstall

I have an AMD64 desktop that I currently run a Centos client on and today I got inspired to convert it into a BSD machine with a gnome desktop environment. I have been running an open BSD server on ...
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2answers
2k views

NAT and source IP filtering in PF, using OpenBSD >= 4.7

I just read a book about PF (The Book Of PF, No Starch), but there's one question not answered by it. If I have a gateway machine using two interfaces, $int_if and $ext_if, and I NAT the packages ...
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1answer
44 views

How to install xcfe on OpenBSD 5.9

I tried following the instructions but nothing works. I get a msg that "can't connect or login to host ftp.openbsd.org" Why? It doesn't even get started. My internet connection works and I'm trying ...
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1answer
50 views

Connect to commercial VPN on OpenBSD 5.9

I recently installed OpenBSD 5.9 and I'm trying to get it functional enough to use as a replacement for Debian. One thing where I hit a brick wall is connecting to my VPN. I use a commercial VPN which ...
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0answers
59 views

OpenBSD - doas.conf (operation not permitted)

First time OpenBSD user and trying to setup and configure a simple doas but I can't figure out the correct syntax. I set up a doas.conf file in /etc to test using the following: permit :wheel permit ...
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22 views

Compile project with cmake for OpenBSD 5.9

I'm writing a shell and have compiled and run it with Ubuntu. It previously built and ran with OpenBSD 5.9 earlier, but now I get compiler error that I don't understand. $ make [ ...
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2answers
58 views

How to enable pkg_add for OpenBSD

I installed and run OpenBSD and I wanted to install git but there were no repositories for OpenBSD 5.9. What should I do if I want to install some programs with pkg_add?
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1answer
174 views

chroot cannot find cgi file

I am unable to serve or execute a cgi file, and the cause seems to be that chroot is unable to find the cgi file when the permission is set to executable. $>ls -l /var/www/my/dir/test.cgi -rwxr-xr-...
4
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1answer
65 views

OpenBSD httpd.conf conditionals

Note: this question is about the built-in OpenBSD http server named httpd and its configuration. It does not apply to any other web servers. Is it possible to make runtime conditional configurations ...
4
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1answer
285 views

How do I delete a partial package in OpenBSD

While upgrading, I tried to add a package that was already there and due to some error, a partial package got created - partial-gnutls. When I try to delete this partial package, I get these errors: ...
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2answers
45 views

How to benchmark different shells [closed]

I want to know if shell 1 is better for a job than shell 2 with a test that I handle maybe with shell 3 for example ksh, dash, bash or zsh. I use a test script that builds my projects, starts it,feed ...
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1answer
29 views

Checking that $((a * b)) evaluates in my own shell [closed]

POSIX seems to define that a shell should be able to evaluate like a calculator the expression $(( a * b)) where * is a binary operator +, - or *. I programmed such a calculator for my own shell and ...
3
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1answer
50 views

OpenBSD 5.9 can't preload library ''

I develop for Linux and OpenBSD and sometimes I get the error can't preload library - do you know what it means? The exact output I got was: : can't preload library When I try to run scripts ...
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1answer
74 views

OpenBSD 5.9 in Virtual Box

Can we confirm that bidirectional copy paste won't work between Virtual box and host os? I have installed OpenBSD 5.9 in VirtualBox where it runs fine and I want to enable copy paste between guest and ...
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1answer
55 views

OpenBSD 5.9 fetching the source code via CVS after fresh installation of OpenBSD 5.9 # anoncvssh: cant' load library 'libc.so.84.2' [closed]

I use OpenBSD for 4 years on this hardware, without any problems. Since I'm using this computer as a build system, each release will be reinstalled. Then, OpenBSD will be raised to stable, with cvs. ...
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1answer
35 views

Can all of fork(), exec() and system() be wrong? [closed]

I understand why it could be less than best practice if I write C code that executes shell commands by calling system() and that it's better to use exec and fork but then a very experienced C ...
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3answers
81 views

OpenBSD stripdown

I recently tried to install OpenBSD to my Soekris net4526, but the 64MB onboard memory is too small. Is there any way to make OpenBSD smaller, because even the smallest configuration (bsd and baseXX....
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3answers
1k views

Is there a valid alternative to top for OpenBSD?

I like very much htop, on GNU/Linux is very nice, I would like a similar software for OpenBSD 5.6. Anyone knows something about that?
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0answers
81 views

Fatal IO error 35 - X problem

Edit: Everything works well on OpenBSD 5.9 Good job! I have a problem with running X on my OpenBSD 5.8. Hardware is Lenovo m57 USFF with Core 2 Duo and Intel GMA3100 graphic. machdep.allowaperature ...
2
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1answer
2k views

Courier IMAP - Account's mailbox directory is not owned by the correct uid or gid

so i poked around and found out that DEFDOMAIN="@domain.se" is messing things up, so i removed that from /etc/courier/imapd and i got to the point where SMTP work and i get this from the IMAP: Jul 2 ...
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3answers
3k views

How to disable IPv6 on OpenBSD?

I'm sure that in my network I will not use IPv6 only IPv4. So according to the KISS principle I will need to disable it. How can I do it? OS is OpenBSD 5.1.
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2answers
51 views

OpenBSD: is safe to delete /usr/src?

After I successfully upgraded OpenBSD, I wanted to upgrade my sources. I want to know, is it safer to delete /usr/src and then extract src.tar.gz, or is it better to preserve the already existing /usr/...
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1answer
237 views

Centrino N-6300 OpenBSD 5.5 - No Link

I have a Lenovo X230 with a Centrino N-6300 wifi card. I cannot get wifi to work on it. I did fw_upgrade I can do a ifconfig iwno scan I have the list of Wifi networks around including mine. ...
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2answers
76 views

How do I add more IP addresses to my pf rules?

I wish to have all internet traffic to go through my VPN; when my VPN is disconnected, all internet traffic can not go out of my workstation/desktop (not server). I wish to switch VPN servers of one ...
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3answers
8k views

How to block abusive IP addresses with pf in OpenBSD?

We can see from the nginx logs that there is an IP address doing nasty things. How can we block it with a pf command and then later permanently with the /etc/pf.log? How can we block a x.x.x.x/24 ...
2
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1answer
61 views

“persist” attribute in OpenBSD Tables

According to OpenBSD's FAQs on "Tables" (http://www.openbsd.org/faq/pf/tables.html), without the persist attribute, the kernel will automatically remove the table when the last rule referencing ...
4
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3answers
661 views

Does sysctl kern.bufcachepercent not work in OpenBSD 5.2 above 1.7GB?

I run OpenBSD/amd64 5.2 on a system with 12GB of RAM, and I want to use about 6GB to 8GB for filesystem caching. By default, 5.2 amd64 comes with sysctl kern.bufcachepercent set to 20 (20%); I've ...
1
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1answer
66 views

OpenBSD cannot find host names

I have a openBSD instance under vultr. I installed OpenBSD 5.8 and I can ssh into it just fine. But I cant seem to be able to use pkg_add, ftp, ping or any other internet dependent program. For ...
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1answer
37 views

I have 5 IP addresses and use opensmtpd as the mail server on Debian 8.3. The mail server uses the main IP as standard

I have 8 IP addresses on my RootServer, and use OpenSMTPD as the mail server on Debian 8.3. The mail server uses the main IP as standard Ip. How can I tell the mail server www.OpenSMTPD.org to use a ...
3
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0answers
87 views

HTTP proxy in OpenBSD 5.8 (replacing Apache ProxyPass)

I'm trying to replace Apache with OpenBSDs httpd but can't figure out what to do with my ProxyPass statements. In apaches conf it looks like this ProxyPass /someurl http://192.168.123.123/...
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0answers
104 views

Setting up IPSEC on LAN between two hosts (OpenBSD)

I originally asked this on ServerFault, but got nothing. Hoping there are some OpenBSD experts here Trying to use IPSEC between two hosts on a LAN. No VPN involved Using OpenBSD 5.8 (in VirtualBox). ...
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96 views

I use OpenSMTPD on OpenBSD 5.8! How can I automatically encrypt E-mail with OpenSMTPD

How can I automatically encrypt all outgoing E mail? My scenario: I use XXXX@gmail.com as my relay for all Emails my OpenSMTPD Server forwards All Emails to me as well as all Emails from somewhere to ...
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0answers
37 views

I have a stable release with OpenBSD 5.8 built. I'd like to upgrade OpenBSD 5.8 now on stable!

The new kernel bsd I just copy with scp on the root server /bsd. scp /usr/rel/bsd base58.tgz man58.tgz vim@10.10.10.10:/ && ssh -l vim 10.10.10.10 && cd / && tar -xzvphf ...
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1answer
83 views

alias su='su -' in .kshrc

I'm on OpenBSD 5.8, new to ksh and I put the string alias su='su -' in my .kshrc file as the only line. After logging in via ssh alias su gives me su alias not found and $(cat .kshrc) ...
3
votes
1answer
101 views

OpenBSD- ignoring a particular keypress

I am using a Lenovo Yoga and the screen always sends out some "keystrokes" to indicate its orientation or simply being open, I don't know. On Linux, I could ignore those keystrokes with setkeycodes ...
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1answer
1k views

LDAP Authentication on OpenBSD

I'm trying to get an OpenBSD server to authenticate users using the same LDAP server the rest of my home network uses. While 'getent password' lists the users from the LDAP server as expected, I ...
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1answer
95 views

Kill process on specific port

It has been asked before but how to do it with OpenBSD? I tried some different method but none worked. $ sudo fuser -k 80/tcp fuser: 80/tcp: No such file or directory $ kill $(sudo lsof -t -i:80) ...
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2answers
111 views

Is it possible to upgrade OpenBSD over a network?

I have an OpenBSD 5.5 system that I once had physical access to and I was able to plug in a monitor to upgrade from 5.0 to 5.5. Now it is installed in a location away from my residence in a spot ...
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1answer
139 views

How do you configure the mail command to read Maildir instead of the default mbox on OpenBSD?

By default the mail command on OpenBSD seems to read from mbox files. I configured smtpd to ... deliver to mbox and I was able to read newly delivered mail using the mail command. I want to switch to ...
2
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1answer
852 views

cannot start PostgreSQL on OpenBSD 5.4 through rc.d

I've installed the postgresql-server package on OpenBSD 5.4 amd64, and I try starting it through its rc.d script, however, it doesn't look like it's running after that. opti# /etc/rc.d/postgresql ...
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0answers
40 views

User creation during authentication

I'm working with OpenBSD 5.6 and the goal is that I need to create user when he or she tries to authenticate with specific password. I've written a script for this purpose and everything goes ok but ...