Ethernet Interfaces

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Creating and configuring an Ethernet interface

Last adaptation to the version: 14.0.0

New:

• New autonegotiation option: Default
• Speed and duplex are adjustable, even if autonegotiation is switched on
• Interfaces can be reset

notempty

This article refers to a Resellerpreview

12.6.0 12.5.1 11.7

Access: Admin Interface of the UTMUTM-IP:Port or UTM-URL:Port
Port as configured at Network / Appliance Settings / Webserver
Default-Port: 11115
i.e.: https://utm.ttt-point.de:11115
Default: https://192.168.175.1:11115 Network Network Configuration  Area Netzwerkschnittstellen Button

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Netzwerkschnittstellen Allgemein

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Only if → Show reset interface options On
Button	Description		Network configuration UTMuser@firewall.name.fqdnNetwork Datei:UTM v12.8.0 Netzwerkschnittstellen Uebersich-en.pngNetwork interfaces overview
Edit	Edit the respective interface
Resetnotempty New as of v14.0.0	Resetting the interface options, this includes everything that is found with the CLI command interface get in the options column (list here), as well as the hotwire configuration.
Delete	Deletes the respective interface
In dem Tabelleneinstellungen () kann die Darstellung sowie der Inhalt der Tabelle konfiguriert werden. notempty New as of v14.0.0
Zurücksetzen der Schnittstellenoptionen anzeigen:	Off	Bei Aktivierung On wird die Schaltfläche zum Zurücksetzen einer Netzwerkschnittstelle eingeblendet	Tabelleneinstellungen
Stil:	Default	Passt den Stil der Tabelle für diese Tabelle individuell an (für genauere Information zu den Konfigurationsmöglichkeiten siehe Tools)
Einträge pro Seite:	Default	Passt die Einträge pro Seite der Tabelle für diese Tabelle individuell an (für genauere Information zu den Konfigurationsmöglichkeiten siehe Tools)
Max Höhe:	Default	Passt die maximale Anzeigehöhe der Tabelle für diese Tabelle individuell an (für genauere Information zu den Konfigurationsmöglichkeiten siehe Tools)

Creating an Ethernet interface

The creation of an Ethernet interface is done with a wizard in the menu Network Network configuration  Area Network interfaces Button Ethernet.

Anzahl Schnittstelen

Auf UTMs mit dem Namensschema ethx lassen sich beliebig viele Schnittstelen anlegen.
Auf UTMs mit dem Namensschema LANx bzw. Ax können nur Schnittstellen angelegt werden, die auch existieren.

Caption	Value	Description	Add interface UTMuser@firewall.name.fqdnNetworkNetwork configuration
Name:	LAN4	Name of the interface. If ther is an existing unused interface by default the next free LANx name is used. The name can also be entered manually.
IP Address:	192.168.176.1/24	If the interface is to have a fixed IP, this is entered here.
DHCP-Client:	Off IPv4 IPv6 IPv4 & IPv6	Here the setting is made whether - and if so, for which IP protocol - the interface should obtain its IP addresses from a DHCP server.
Zones:		Previously created zones can be selected by clicking in the click box.
Add new zone:	No dmz1	If activated, a new zone with a freely selectable name (here: dmz1) is created.
Auto-generate rules:	No	If activated, autogenerated rules are created to enable network traffic to all existing networks. notempty These rules serve exclusively to facilitate the commissioning of the interface. They cannot be edited and must absolutely be replaced by individualized rules and subsequently deactivated or deleted!
Update associated network objects: notempty New as of v12.6.0	On	If an existing zone has been selected, all network objects that are already in this zone and have an interface as a target are moved to the new interface.

Finish the wizard with the Finish button.

Edit an Ethernet interface

The configuration of an Ethernet interface is done in the menu Network Network configuration  Area Network interfaces Button

General

General

Caption	Value	Description	Edit interface UTMuser@firewall.name.fqdnNetworkNetwork configuration
Name:	LAN1	The name of the interface cannot be changed afterwards.
DHCP-Client:	Off IPv4 IPv6 IPv4 & IPv6	Here the setting is made whether - and if so, for which IP protocol - the interface should obtain its IP addresses from a DHCP server.
Router Advertisement:	Off	If the UTM has received an IPv6 prefix (on an external interface), it can make the Default Gateway and the subnet known via router advertisement and at the same time distribute corresponding IPv6 addresses in the connected network. (See article IPv6 Prefix Delegation).
Assign IPv6 addresses:	On	If it is not desired that the UTM distributes IPv6 addresses, but only the default gateway, then this option must be deactivated.
IPv6 Prefix Delegation:	Off	Enables IPv6 prefex delegation to get IPv6 prefixes allocated on this interface. (For external interfaces only.)
Settings Settings
MTU:	1500	The Maximum Transmission Unit specifies the maximum packet size that can be transmitted without fragmentation. ‍ Depending on the type of network (cable, Ethernet, VPN use), other values can help with connection problems here.
Autonegotiation: notempty New option: Default	Off OnDefault	Erlaubt (an) bzw. verbietet (aus) Ethernet-Netzwerkports selbständig die maximal mögliche Übertragungsgeschwindigkeit und das Duplex-Verfahren miteinander auszuhandeln und zu konfigurieren. Oder führt keine Überprüfung der Autonegotiation durch (default) und produziert daher auch keinen Fehler, wenn die Option gar nicht änderbar ist
Speed: notempty Even with autonegotiation activated	10 MBit/s 100 MBit/s 1000 MBit/s	Speed of network communication
Duplex: notempty Even with autonegotiation activated	full half	Duplex allows data packets to be sent and received simultaneously. HUBs usually only support Halfduplex. ‍ If autonegotiation mode is enabled at one end of the link and full-duplex operation is forced at the other end, the autonegotiating subscriber will recognize the link as half-duplex, resulting in a large number of transmission errors. →Wikipedia
Route Hint IPv4:	192.0.2.192/---	Via the field "Route Hint" it is possible to define the gateway of the interface. This has the advantage, for example, that only the interface (e.g. LAN3) has to be specified in routing and not directly the gateway IP.
Route Hint IPv6:	2001:DB8::123/---	Via the field "Route Hint" it is possible to define the gateway of the interface. This has the advantage, for example, that only the interface (e.g. LAN3) has to be specified in routing and not directly the gateway IP.
Per CLI lässt sich zusätzlich ein Flow Control konfigurieren. ‍ Autonegotiate aktivieren: interface set name "LAN1" options [ pause_autoneg=1 ] RX (Das Interface kann Pause Frames empfangen.) aktivieren: interface set name "LAN1" options [ pause_rx=1 ] TX (Das Interface kann Pause Frames an andere Teilnehmer in dem Netzwerk senden.) aktivieren: interface set name "LAN1" options [ pause_tx=1 ] Konfiguration einsehen: interface get
IP Addresses IP Addresses
IP Addresses	»192.168.121.1/24»fc80:1234::1/64	Under the menu item IP addresses one or more addresses can be assigned to an interface.
Zones Zones
Zones	»internal»firewall-internal»internal_v6»fireall-internal_v6	Under the menu item Zones the zones of the interface are defined. Important: The zone internal should always be assigned to an interface. If the zone internal is not assigned to an interface and the administration via the web interface is not explicitly enabled, the web interface can not be accessed anymore!
DynDNS DynDNS
Enabled:	Yes	Enables or disables (default) the DynDNS function	DynDNS settings
Hostname:	hostname.spdns.de	Desired Hostname
User:	hostname.spdns.de	The corresponding user name must be entered here. If linked to a reseller account, the corresponding host name must be entered here
Password:		The password must be entered here. If linked to a reseller account, the update token must be entered here.
Server:	update.spdyn.de	The securepoint update server
MX:
Webresolver:	On	Must be activated if the NAT router is located before the DNS (i.e.: UTM → Fritzbox/Speedport → internet)
Protocol:		The DNS service can be activated for IPv4 or IPv6 addresses only, or both IPv4 and IPv6.
Fallback Fallback
Fallback interface:	wan3	Interface that stands in for the main interface in the case of a malfunction. The absence of malfunctions is verified by ping-checking an IP. Further notes on the configuration of a fallback can be found in a separate Wiki article.	Fallback settings
Ping-check IP:	»203.0.2.203 »192.0.2.192 Example IPs must be replaced	Host(s) to which the ping check is to be performed. This can also be a host in the internal network if necessary. This may also be a host in the internal network. If a ping check host does not respond, the subsequent IP address is tried immediately. If none of the ping check hosts responds, this is considered a failed attempt and checked again after the ping check interval.
Ping-check Intervall:	5 Seconds	Period between ping attempts
Ping-check Threshold:	4 Attempts	Number of failed ping attempts before switching to the fallback interface.

Create default route

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A default route must be created for this connection: Network Network Configuration  Area Routing Button Add Default Route
Gateway Type Interface Gateway Type: Interface
Caption	Value	Description	Add Default-Route UTMuser@firewall.name.fqdnNetworkNetwork configuration Create default route
Gateway:	wan0	Select the desired interface.
Dialog Save and close
Default route for IPv4. If necessary, another default route for IPv6 must be created.			Network configuration UTMuser@firewall.name.fqdnNetwork Routing with PPPoE
Gateway Type IP Gateway Type: IP
Caption	Value	Description	Add Default-Route UTMuser@firewall.name.fqdnNetworkNetwork configuration Create default route
Gateway:	fe80:1234::1/---	IP address of the gateway. If a Link Local IPv6 is recognised, the "Interface" button is displayed and an interface must be selected.
Interface: Only for link local IPv6	LAN1	Interface via which the IP address can be accessed.
Dialog Save and close
Default route for IPv6. If necessary, another default route for IPv4 must be created.			Network configuration UTMuser@firewall.name.fqdnNetwork Routing with PPPoE