View source for Open5gs: Setup DNS untuk IMS dan EPC



Install BIND,

 apt install -y bind9

Gunakan contoh di bawah untuk DNS Zone file termasuk edit

 /etc/bind/named.conf.local
 /etc/bind/named.conf.options

Lakukan,

 cd /etc/bind

Dalam contoh ini Kamailio IMS & DNS server jalan di 10.45.0.1/192.168.0.5 (Floating IP) dan PCRF pada 10.45.0.1/192.168.0.5 (Floating IP)

 vi /etc/bind/ims.mnc070.mcc999.3gppnetwork.org

 $ORIGIN ims.mnc070.mcc999.3gppnetwork.org.
 $TTL 1W
 @                       1D IN SOA       localhost. root.localhost. (
                                         1               ; serial
                                         3H              ; refresh
                                         15M             ; retry
                                         1W              ; expiry
                                         1D )            ; minimum 
 
                         1D IN NS        ns
 ns                      1D IN A         10.45.0.1 
 
 pcscf                   1D IN A         10.45.0.1
 _sip._udp.pcscf         1D SRV 0 0 5060 pcscf
 _sip._tcp.pcscf         1D SRV 0 0 5060 pcscf 
 
 icscf                   1D IN A         10.45.0.1
 _sip._udp               1D SRV 0 0 4060 icscf
 _sip._tcp               1D SRV 0 0 4060 icscf
 
 scscf                   1D IN A         10.45.0.1
 _sip._udp.scscf         1D SRV 0 0 6060 scscf
 _sip._tcp.scscf         1D SRV 0 0 6060 scscf
 
 hss                     1D IN A         10.45.0.1

Buat DNS zone untuk pcrf domain

 vi /etc/bind/epc.mnc070.mcc999.3gppnetwork.org

 $ORIGIN epc.mnc070.mcc999.3gppnetwork.org.
 $TTL 1W
 @                       1D IN SOA       localhost. root.localhost. (
                                         1               ; serial
                                         3H              ; refresh
                                         15M             ; retry
                                         1W              ; expiry
                                         1D )            ; minimum   
 
                         1D IN NS        epcns
 epcns                   1D IN A         10.45.0.1
 
 pcrf                    1D IN A         127.0.0.5

Edit

 vi /etc/bind/named.conf.local

sebagai berikut,

 //
 // Do any local configuration here
 //
 
 // Consider adding the 1918 zones here, if they are not used in your
 // organization
 //include "/etc/bind/zones.rfc1918";
 
 zone "ims.mnc070.mcc999.3gppnetwork.org" {
         type master;
         file "/etc/bind/ims.mnc070.mcc999.3gppnetwork.org";
 };
 
 zone "epc.mnc070.mcc999.3gppnetwork.org" {
         type master;
         file "/etc/bind/epc.mnc070.mcc999.3gppnetwork.org";
 };

Edit

 vi /etc/bind/named.conf.options

sebagai berikut,
 
 options {
         directory "/var/cache/bind"; 
 
         // If there is a firewall between you and nameservers you want
         // to talk to, you may need to fix the firewall to allow multiple
         // ports to talk.  See http://www.kb.cert.org/vuls/id/800113
 
         // If your ISP provided one or more IP addresses for stable
         // nameservers, you probably want to use them as forwarders.
         // Uncomment the following block, and insert the addresses replacing
         // the all-0's placeholder.
 
         //forwarders {
         // Put here the IP address of other DNS server which could be used if name cannot be resolved with DNS server running in this machine (Optional)
         //192.168.0.222;
         //};
 
         //========================================================================
         // If BIND logs error messages about the root key being expired,
         // you will need to update your keys.  See https://www.isc.org/bind-keys
         //========================================================================
         dnssec-validation no;
         allow-query { any; };
 
         auth-nxdomain no;    # conform to RFC1035
         //listen-on-v6 { any; };
 };

Restart BIND

 systemctl restart bind9
 systemctl status bind9

Edit resolb.conf, tambahkan di

 vi /etc/resolv.conf

 search ims.mnc070.mcc999.3gppnetwork.org
 nameserver 10.45.0.1

Coba, ping

 ping pcscf

 PING pcscf.ims.mnc070.mcc999.3gppnetwork.org (10.45.0.1) 56(84) bytes of data.
 64 bytes from 10.45.0.1 (10.45.0.1): icmp_seq=1 ttl=64 time=0.088 ms
 64 bytes from 10.45.0.1 (10.45.0.1): icmp_seq=2 ttl=64 time=0.110 ms
 64 bytes from 10.45.0.1 (10.45.0.1): icmp_seq=3 ttl=64 time=0.126 ms
 
 --- pcscf.ims.mnc070.mcc999.3gppnetwork.org ping statistics ---
 3 packets transmitted, 3 received, 0% packet loss, time 2004ms
 rtt min/avg/max/mdev = 0.088/0.108/0.126/0.015 ms

Agar /etc/resolv.conf persistent saat booting, kita perlu tambahkan di /etc/netplan/00* sebagai berikut,

 vi /etc/netplan/00-installer-config.yaml

 # This file is generated from information provided by
 # the datasource.  Changes to it will not persist across an instance.
 # To disable cloud-init's network configuration capabilities, write a file
 # /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
 # network: {config: disabled}
 network:
     ethernets:
         enp0s3:
             dhcp4: true
             match:
                 macaddress: fa:16:3e:99:f5:67
             set-name: enp0s3
             nameservers:
                 search: [ims.mnc070.mcc999.3gppnetwork.org,epc.mnc070.mcc999.3gppnetwork.org]
                 addresses:
                       - 10.45.0.1
     version: 2

Atau untuk IP statik,

 network:
     version: 2
     renderer: networkd
     ethernets:
         enp0s3:
             addresses:
                 - 192.168.0.5/24
             nameservers:
                 search: [ims.mnc070.mcc999.3gppnetwork.org,epc.mnc070.mcc999.3gppnetwork.org]
                 addresses:
                       - 10.45.0.1
             routes:
                 - to: default
                   via: 192.168.0.222

Atau,

 # This is the network config written by 'subiquity'
 network:
   ethernets:
     enp0s3:
       dhcp4: true
       nameservers:
           search: [ims.mnc070.mcc999.3gppnetwork.org,epc.mnc070.mcc999.3gppnetwork.org]
           addresses:
                 - 10.45.0.1
   version: 2

Restart & pastikan tidak ada error,

 netplan apply
 ln -sf /run/systemd/resolve/resolv.conf /etc/resolv.conf
 systemctl restart systemd-resolved.service
 systemctl status systemd-resolved.service

==Pranala Menarik==

* [[5G]]