twingate-dns-security

Role

Decisions & Guidelines

• Confirm Internet Security entitlement before designing any solution around DNS filtering or exit networks. Internet Security is a separate product area and may require a different license tier. If the customer doesn't have entitlement, DNS Security Profiles and exit network configuration won't appear in the admin console.
• Exit networks route traffic to a fixed egress point — they do not block destinations. If the goal is to prevent access to a website, use DNS filtering. If the goal is to ensure traffic exits from a fixed IP, use an exit network. These are not substitutes.
• Priority is numeric, and lower number = higher priority. This is the most commonly confused aspect of DNS Security Profile assignment. A permissive Engineering profile at priority 1 beats a restrictive Corporate profile at priority 2, even when the user is in both groups.
• Always configure the "Everyone" group as a baseline with the high-confidence threat categories blocked at minimum. Users not in any group with a profile receive no filtering at all. "Everyone" is the safety net. Current category names and recommended baseline categories are in

  references/dns-security-overview.md

  and

  references/dns-filtering.md

  .
• Enable STRICT fallback mode only after pre-populating the allow list with the customer's known-good domains. STRICT mode (deny-by-default) will block legitimate SaaS tools until they are explicitly allowed. Always roll out STRICT to a pilot group first.
• DNS-over-HTTPS in Twingate covers only DNS queries that flow through the Twingate Client. It does not encrypt OS-level DNS for non-Twingate traffic or queries made before the Client starts. If full-device DoH is required, configure it at the OS or network level in addition to Twingate.
• A "DNS conflict" symptom is usually a CGNAT range collision or a competing DNS-modifying tool, not a Twingate misconfiguration. Twingate claims the entire

  100.96/12

  range and acts as a transparent DNS proxy on only one interface (the default gateway's). Before redesigning a DNS Security Profile, rule out a third-party DNS filter/AV product or a multi-NIC environment — the help-center corpus documents the specific known conflicts and their workarounds.

Search References First

references/

grep -ril "all nameservers have failed" references/   # -> 9539322912-twingate-linux-client-fails-to-start-logs-show-dns-errors.md
grep -ril "100.96/12" references/                     # -> 4359531030-cgnat-ip-conflicts-...md
grep -ril "avast" references/                         # -> 6928700605-dns-avast-real-site-protection.md

references/

gh-*

Routing

references/

• → twingate-identity: DNS Security Profiles attach to Groups; for group management, SCIM provisioning, or understanding how group membership determines which profile applies
• → twingate-architect: for split DNS model questions — understanding which DNS queries Twingate intercepts before configuring Internet Security
• → twingate-troubleshoot: when DNS filtering appears to be interfering with private resource access or general connectivity, or the symptom is a client-side bug rather than a DNS Security Profile design question

References

references/

• {slug}.md

  — summaries of

  twingate.com/docs

  pages (product documentation).

• {numeric-id}-{slug}.md

  — Twingate help-center articles: symptom-shaped DNS conflict reports, exact error strings, and per-platform gotchas.

• gh-{org}-{repo}.md

  — summaries of public Twingate GitHub repos: community exit-network deployment tooling.

dns-security-overview.md

dns-security.md

dns-filtering.md

internet-security.md

internet-security-client-configuration.md

exit-networks.md

configuring-aws-exit-nodes.md

browser-security.md

doh-cloudflare.md

nextdns-configuration.md

configuring-anyconnect-with-umbrella.md

configuring-zscaler-with-twingate.md

netskope-dlp-config.md

dns-ultimate-guide.md

gh-twingate-community-diy-vpn.md

gh-twingate-community-ubiquiti-headless-gateway.md

5745151855-dns-using-dnsfilter-alongside-twingate.md

8487611740-dns-using-adguard-for-mac-alongside-twingate.md

6928700605-dns-avast-real-site-protection.md

100.96/12

4359531030-cgnat-ip-conflicts-dns-resolution-resource-access-issues-with-twingate.md

1402124326-windows-client-limitations-with-multiple-network-interfaces-with-differing-dns.md

3556574910-potential-dns-or-resource-access-issues-on-devices-with-multiple-network-interfaces-connected.md

9539322912-twingate-linux-client-fails-to-start-logs-show-dns-errors.md

4817674373-dns-request-delays-while-using-twingate-on-linux.md

--dns

7318897884-macos-client-docker-container-s-second-connections-to-twingate-dns-resource-fails.md

references/