To get the IP address from the SDP part of incoming INVITE:
$(rb{sdp.line,c}{s.select,2, })
http://lists.opensips.org/pipermail/users/2024-June/048189.html
To get the IP address from the SDP part of incoming INVITE:
$(rb{sdp.line,c}{s.select,2, })
http://lists.opensips.org/pipermail/users/2024-June/048189.html
pkgin install bozohttpd-20240126 php-8.3.4
By default httpd is run under _httpd user. To start from command line and specify another user (e.g. nobody) type:
/usr/libexec/httpd -b -U nobody -C .php /usr/pkg/libexec/cgi-bin/php /var/www/
To start httpd automatically, edit /etc/rc.conf (not /etc/rc.local , not /etc/defaults/rc.conf):
httpd=YES
httpd_flags="-b"
httpd_flags="-C .php /usr/pkg/libexec/cgi-bin/php"
httpd_wwwuser="nobody" # this is a separate variable,
# you may read 'man 5 rc.conf' about it
# and about other variables
https://askubuntu.com/a/1253348
Check what current kernel You are running:
uname -a
Linux blackhole 5.6.13-050613-lowlatency #202005141310 SMP PREEMPT Thu May 14 13:17:41 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
So, this system runs 5.6.13-050613-lowlatency kernel.
List all installed kernels in Your OS:
dpkg --list | egrep -i --color 'linux-image|linux-headers|linux-modules' | awk '{ print $2 }'
linux-headers-5.6.11-050611
linux-headers-5.6.11-050611-lowlatency
linux-headers-5.6.13-050613
linux-headers-5.6.13-050613-lowlatency
linux-image-unsigned-5.6.11-050611-lowlatency
linux-image-unsigned-5.6.13-050613-lowlatency
linux-modules-5.6.11-050611-lowlatency
linux-modules-5.6.13-050613-lowlatency
Uninstall kernels You don’t need:
sudo apt purge linux-headers-5.6.11-050611 linux-headers-5.6.11-050611-lowlatency linux-image-unsigned-5.6.11-050611-lowlatency linux-modules-5.6.11-050611-lowlatency
flameshot – a good alternative for Deepin Screenshot which seems to be unavailable in *buntu 23.10
Just some explanation of dispatcher module argorithms.
hash over callid
– ensures that all requests within a dialog goes to same boxhash over from uri
– ensures that all requests from same user goes to same boxhash over to uri
– ensures that registrations of an AoR goes to same boxhash over request-uri
– ensures that requests to same destination are processes by same box#hash over config variable
– for different needs
https://netbsd.org/docs/guide/en/chap-boot.html#chap-boot-keyboard-layout
https://netbsd.org/docs/guide/en/chap-boot.html#chap-boot-system-time
https://netbsd.org/docs/guide/en/chap-boot.html#chap-boot-mount-cdrom
https://netbsd.org/docs/guide/en/chap-boot.html#chap-boot-pkgsrc
https://netbsd.org/docs/misc/index.html#wifi
https://netbsd.org/docs/misc/index.html#package-management
https://netbsd.org/docs/misc/index.html#installing-rootcerts
https://netbsd.org/docs/misc/index.html#managing-services
https://netbsd.org/docs/misc/index.html#run-on-startup
https://netbsd.org/docs/misc/index.html#viewing-disks
https://netbsd.org/docs/guide/en/chap-rmmedia.html#using-usb-flash-drives
https://netbsd.org/docs/guide/en/chap-rmmedia.html#cdrom
https://netbsd.org/docs/guide/en/chap-rmmedia.html#cdrom-users
https://netbsd.org/docs/guide/en/chap-rmmedia.html#vnconfig
NPF: NetBSD Packet Filter:
https://rmind.github.io/npf/nat.html
https://github.com/rmind/npf/tree/master/docs
3nmp (like LAMP)
https://wiki.netbsd.org/tutorials/services/3nmp/
how to install a lamp server
https://wiki.netbsd.org/pkgsrc/how_to_install_a_lamp_server/
setting up blocklistd (like fail2ban)
https://wiki.netbsd.org/tutorials/setting_up_blocklistd/
the netbsd system manager’s manual
https://wiki.netbsd.org/tutorials/the_netbsd_system_manager__39__s_manual/
tuning netbsd for performance
https://wiki.netbsd.org/tutorials/tuning_netbsd_for_performance/
/etc/fail2ban/jail.local:
# WordPress Jail
[wordpress-auths]
enabled = true
port = http,https
filter = wordpress-auth
logpath = /var/log/lighttpd/access.log
/etc/fail2ban/filter.d/botsearch-common.conf:
[Init]
# Block is the actual non-found directories to block
block = \/?(<webmail>|<phpmyadmin>|<wordpress>|cgi-bin|mysqladmin)[^,]*
# These are just convient definitions
# that assist the blocking of stuff that
# isn't installed
webmail = roundcube|(ext)?mail|horde|(v-?)?webmail
phpmyadmin = (typo3/|xampp/|admin/|)(pma|(php)?[Mm]y[Aa]dmin)
wordpress = wp-(login|signup|admin)\.php
Linksys PAP2T-NA phone adapter is configured to send logs to a remote syslog server 10.11.0.10.
Enable UDP listener in /etc/rsyslog.conf and allow in it’s config a remote ip/subnet address:
module(load="imudp") input(type="imudp" port="514") $AllowedSender TCP, 10.11.0.0/16
Here is how logs look like after this (and sure after configuring your server’s ip as a syslog server on the remote device). Most likely they will appear in /var/log/syslog :
Nov 25 15:39:19 10.11.13.102 [1: 0]RTP Tx Dn
Nov 25 15:39:19 10.11.13.102 [1: 0]ENC INIT 8
Nov 25 15:39:19 10.11.13.102 [1: 0]RTP Tx Up (pt=8->0a48000a:18076)
Nov 25 15:39:19 10.11.13.102 CC: Remote Resume
Nov 25 15:39:19 10.11.13.102 CC: Connected
Nov 25 15:39:19 10.11.13.102 RTP: SSRC changed 787a1882->1df25275
Nov 25 15:39:29 10.11.13.102 syscfg_update_hdlr!!!
Nov 25 15:39:29 10.11.13.102 syscfg_update_hdlr!!!
Nov 25 15:39:51 10.11.13.102 syscfg_update_hdlr!!!
To redirect logs from remote host with ip address 10.11.13.102 do the following:
Create /etc/rsyslog.d/11-linksys-gw.conf with the following lines:
if $fromhost-ip == '10.11.13.102' then /var/log/linksys-gw.log
& stop
Create /var/log/linksys-gw.log empty file. At least in Debian you need to chown root:adm for this file.
Finally, restart rsyslog daemon. After that all logs going from remote ip-address 10.11.13.102 will be stored in a separate file.
Trying to start VM from console, but unsuccessful:
lexus@lexus-H110M-S2H:~$ vboxmanage startvm 21eaceac-f85e-4622-a52b-c586352aa9eb Waiting for VM "21eaceac-f85e-4622-a52b-c586352aa9eb" to power on... VBoxManage: error: The virtual machine 'centos7-ast-16' has terminated unexpectedly during startup because of signal 6 VBoxManage: error: Details: code NS_ERROR_FAILURE (0x80004005), component MachineWrap, interface IMachine
The solution is "--type headless"
option:
lexus@lexus-H110M-S2H:~$ vboxmanage startvm 21eaceac-f85e-4622-a52b-c586352aa9eb --type headless Waiting for VM "21eaceac-f85e-4622-a52b-c586352aa9eb" to power on... VM "21eaceac-f85e-4622-a52b-c586352aa9eb" has been successfully started.
A new post after nearly a year of lull!
Imagine the situation when there is some remote host machine with several VMs. You have an SSH access to host machine, but no VNC to manage easily those VMs, even doing the most elementary actions.
Listing all your VMs:
alexey@amd:~$ vboxmanage list vms "centos7-orig" {e4077fae-1be5-42f4-ae40-b399f98c6e3d} "debian9.rtpengine" {d2fb6655-29ab-4103-a70c-b7234c835a79} "debian9.opensips1" {757f6235-27d4-470d-a461-c12fbfe0cfd7} "debian9.opensips2" {09b11945-d696-409d-b90b-e5f2b5af6c4a} "centos7-ast-16" {21eaceac-f85e-4622-a52b-c586352aa9eb} "centos7-rtpengine8" {935a0191-a17e-4c95-8cf4-022f7ad1a398} "centos7.osips3.2" {e39ddc59-70cc-4bcb-8f6d-3b6bd9e78d3d} "centos7.osips3.2_node2" {ecb64a86-aa90-4f53-bd12-5bb253d02058}
Listing all your running VMs:
alexey@amd:~$ vboxmanage list runningvms
Starting VM (vm remains working even if you log out from host machine):
alexey@amd:~$ vboxmanage startvm centos7-ast-16 Waiting for VM "centos7-ast-16" to power on... VM "centos7-ast-16" has been successfully started.
Stopping VM:
alexey@amd:~$ vboxmanage controlvm centos7-ast-16 poweroff 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%
The more the better.
Now I would like to get the IP address of some VM. But there is no any way to do it until we use GuestAdditions. I mean that you’ve already started your VM with the appropriate console command and now need to log in via SSH, but you don’t know it’s IP address (e.g. in case of bridged network settings of the VM).
To be able to see VM’s IP address from host’s machine console, you have to install VitualBox to your guest machine. Then you need to “insert” an .iso containing GuestAdditions to your guest machine (the easiest way is to do it using VirtualBox GUI, but I’m sure there is also a console command).
If the VM’s cd-rom with this .iso is not mounted automatically, do it manually:
[root@flexisip ~]# mount /dev/cdrom /mnt/cdrom/
After that the .iso’s files are available:
[root@flexisip cdrom]# ls -l /mnt/cdrom/ total 47008 -r--r--r--. 1 root root 763 feb 20 2020 AUTORUN.INF -r-xr-xr-x. 1 root root 6384 jan 14 2022 autorun.sh dr-xr-xr-x. 2 root root 792 jan 14 2022 cert dr-xr-xr-x. 2 root root 1824 jan 14 2022 NT3x dr-xr-xr-x. 2 root root 2652 jan 14 2022 OS2 -r-xr-xr-x. 1 root root 4821 jan 14 2022 runasroot.sh -r--r--r--. 1 root root 592 jan 14 2022 TRANS.TBL -r--r--r--. 1 root root 4029558 jan 14 2022 VBoxDarwinAdditions.pkg -r-xr-xr-x. 1 root root 3949 jan 14 2022 VBoxDarwinAdditionsUninstall.tool -r-xr-xr-x. 1 root root 7474611 jan 14 2022 VBoxLinuxAdditions.run -r--r--r--. 1 root root 9439232 jan 14 2022 VBoxSolarisAdditions.pkg -r-xr-xr-x. 1 root root 16895432 jan 14 2022 VBoxWindowsAdditions-amd64.exe -r-xr-xr-x. 1 root root 270840 jan 14 2022 VBoxWindowsAdditions.exe -r-xr-xr-x. 1 root root 10000520 jan 14 2022 VBoxWindowsAdditions-x86.exe -r--r--r--. 1 root root 259 oct 4 2021 windows11-bypass.reg
Now we need to install GuestAdditions to the guest machine (VM):
[root@flexisip ~]# cd /mnt/cdrom [root@flexisip cdrom]# sh ./VBoxLinuxAdditions.run Verifying archive integrity... All good. Uncompressing VirtualBox 6.1.32 Guest Additions for Linux........ VirtualBox Guest Additions installer Copying additional installer modules ... Installing additional modules ... VirtualBox Guest Additions: Starting. VirtualBox Guest Additions: Building the VirtualBox Guest Additions kernel modules. This may take a while. VirtualBox Guest Additions: To build modules for other installed kernels, run VirtualBox Guest Additions: /sbin/rcvboxadd quicksetup <version> VirtualBox Guest Additions: or VirtualBox Guest Additions: /sbin/rcvboxadd quicksetup all VirtualBox Guest Additions: Building the modules for kernel 3.10.0-1160.88.1.el7.x86_64.
And now you can see VM’s IP address from your host machine console (NAT network settings):
alexey@amd:~$ VBoxManage guestproperty get centos-flexisip "/VirtualBox/GuestInfo/Net/0/V4/IP" Value: 10.0.2.15
The same for bridged networking:
alexey@amd:~$ VBoxManage guestproperty get centos-flexisip "/VirtualBox/GuestInfo/Net/0/V4/IP" Value: 192.168.88.239
More VM properties:
alexey@amd:~$ VBoxManage guestproperty enumerate centos-flexisip
But this command still does not show the IP address of the VM, though it shows its MAC:
alexey@amd:~$ vboxmanage showvminfo centos-flexisip
After this you may unattach an .iso from your VM cd-rom.