Clickhouse  DHCP  DNS  Junos  Networks  OpenSSL  PCAP  Wiki.js 
C  C++  Chroot  Clickhouse  Compression  Databases  DHCP  DNS  Junos  Katex  Latex  Networks  OpenSSL  PCAP  Random  Wiki 
featured image srx300-right-low.png Image Source

Junos DHCPv6 DNS Search List

John Dickinson Networks Junos DHCP Networks Junos DHCP
I have been looking at the DHCPv6 server in JUNOS 15.1X49-D160.2. It is easy enough to setup Note: Step 5 is wrong, the first two instructions should have dhcpv6 as the last argument e.g. set security zones security-zone untrust interfaces ge-0/0/0.0 host-inbound-traffic system-services dhcpv6 It would be nice to configure the DNS Search List option. The option code for this is 24. So I tried this …
featured image IMG_0268.png

Juniper SRX mucking with DNS

John Dickinson Networks Junos DNS Networks Junos DNS
I was getting some strange DNS answers on the servers in a trust zone on my SRX. All the servers are statically NAT’d to external IP’s and run their own caching resolvers but when I tried to query for the servers A RR I kept getting the internal IP address. No name server either internal or external was serving that A RR. Eventually I realised that it was the SRX changing the answer section of the …