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15
02
25
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Further investigation of Asterisk logs

Posted by | Ubuntu | Tagged |

Clients A and B are in Windows Sandboxes behind a router in a local network.

Client A:

   Connection-specific DNS Suffix  . : mshome.net
   Link-local IPv6 Address . . . . . : fe80::db7a:bb9e:748a:f5a9%205
   IPv4 Address. . . . . . . . . . . : 172.28.33.149
   Subnet Mask . . . . . . . . . . . : 255.255.240.0
   Default Gateway . . . . . . . . . : 172.28.32.1

Client B:

   Connection-specific DNS Suffix . : mshome.net
   Link-local IPv6 Address . . . . . : fe80::d607:36fe:46b0:b7dc%205
   IPv4 Address. . . . . . . . . . . : 172.24.106.63
   Subnet Mask . . . . . . . . . . . : 255.255.240.0
   Default Gateway . . . . . . . . . : 172.24.96.1
(more…)
14
02
25
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How to add a scrollable text block to a WordPress post

Posted by | WordPress |

With preformatted block

Add the following class to your style.css:

.scrollable-log {
  overflow-y: scroll;
  font-family: Monaco, "Consolas", "Bitstream Vera Sans Mono", "Courier New", Courier, monospace !important;
  font-weight: normal !important;
  font-style: normal !important;
  font-size: 1em !important;
  max-height: 400px;
}
(more…)
13
02
25
 1 Comment

Investigating Asterisk logs

Posted by | Ubuntu | Tagged |

Client C successfully call client A, but a call in the reverse direction fails. Client B successfully calls client A. See my previous post for my Asterisk configuration and clients.

IP addresses

IP address of client C is 176.15.165.103 and external IP address of client A is 91.122.37.167. Server IP address is 172.236.29.157.

172.28.33.149 is the local IP address of client A in Windows Sandbox (which external IP address is 91.122.37.167):

C:\Users\WDAGUtilityAccount>ipconfig

Windows IP Configuration


Ethernet adapter Ethernet:

   Connection-specific DNS Suffix  . : mshome.net
   Link-local IPv6 Address . . . . . : fe80::db7a:bb9e:748a:f5a9%205
   IPv4 Address. . . . . . . . . . . : 172.28.33.149
   Subnet Mask . . . . . . . . . . . : 255.255.240.0
   Default Gateway . . . . . . . . . : 172.28.32.1
(more…)
12
02
25
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Further experimentations with PJSIP

Posted by | Ubuntu | Tagged |

I have two clients in Sandboxes on Windows 10 machines in a local network behind a router. First client is Linphone (client A) and second client is ZoiPer (client B), so the clients A and B are behind NAT. Also I have Linphone (client C), ZipPer (client D) and PortSIP (client F) on my Android mobile phone connected to the internet over 4G (so there is no NAT). The server is in the Docker container with default network configuration with all the ports mapped to the host.

My Asterisk configuration:

rtp.conf:

[general]
rtpstart=10000
rtpend=10099
(more…)
12
02
25
 1 Comment

Interesting GASP chart

Posted by | Cryptocurrencies | Tagged |

At about 8:50 PM MSK GAZP price reached its upper limit:

(more…)
10
02
25
 20 Comments

Connecting two phones to Asterisk with PJSIP

Posted by | Ubuntu | Tagged |

I was able to connect to Asterisk running in a Docker container using Linphone app:

(more…)
06
02
25
 2 Comments

Updating website icon in Joomla 5

Posted by | Joomla |

For the Cassiopeia template, Joomla will look for the favicons in the following locations:

  1. media/templates/site/cassiopeia/images – they are not there so Joomla will look in the next location.
  2. media/system/images – they are there so Joomla will use them from there.
wget -O - https://sharlines.com | grep -i favicon

        <link href="/media/system/images/joomla-favicon.svg" rel="icon" type="image/svg+xml">
        <link href="/media/templates/site/cassiopeia/images/favicon.ico" rel="alternate icon" type="image/vnd.microsoft.icon">
        <link href="/media/system/images/joomla-favicon-pinned.svg" rel="mask-icon" color="#000">
(more…)
31
01
25
 8 Comments

Running Asterisk 22 in a Docker container

Posted by | Ubuntu | Tagged |

I build and run Asterisk 22 in a Docker container on my Ubuntu 24.04 and it started to use 100% CPU and within a few hours consumed 100% of the disk space:

(more…)
27
01
25
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Denying access to /xmlrpc.php on a WordPress website

Posted by | Nginx, WordPress |

Today I notices that my WordPress website consumes 30% CPU.

(more…)
27
01
25
 3 Comments

Preventing OpenVPN clients from seeing each other

Posted by | Ubuntu | Tagged |

Listing existing rules

sudo docker exec -it dockovpn_dockovpn_1 bash
iptables --list

Chain INPUT (policy ACCEPT)
target     prot opt source               destination
ACCEPT     udp  --  anywhere             anywhere             state NEW,ESTABLISHED udp dpt:openvpn
ACCEPT     all  --  anywhere             anywhere

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination
ACCEPT     all  --  anywhere             anywhere
ACCEPT     all  --  10.8.0.0/24          anywhere
ACCEPT     all  --  anywhere             anywhere             state RELATED,ESTABLISHED

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination
ACCEPT     udp  --  anywhere             anywhere             state ESTABLISHED udp spt:openvpn
ACCEPT     all  --  anywhere             anywhere
(more…)
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