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Ethernet Interfaces

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Dieser Artikel bezieht sich auf eine nicht mehr aktuelle Version!

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Der Artikel für die neueste Version steht hier

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Creating and configuring an Ethernet interface

Last adaptation to the version: 12.6.0

New:
Last updated: 
    06.2024
notempty
This article refers to a Beta version
Access: UTM-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


Creating an Ethernet interface

The creation of an Ethernet interface is done in the menu Network Network configuration  Area Network interfaces button Ethernet. A wizard opens:

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 Yes is activated, a new zone with a freely selectable name (here: dmz1) is created.
Auto-generate rules: No If Yes is 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: On Allows Ethernet network ports to independently negotiate and configure the maximum possible transmission speed and duplexing with each other.
Speed: 10 MBit/s
100 MBit/s
1000 MBit/s		 Speed of network communication
Only with decativated autonegotiation
Duplex: full
half		 Duplex allows data packets to be sent and received simultaneously. HUBs usually only support Halfduplex.
Only with decativated autonegotiation.
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.

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 replacednotempty
    Neu: mehrere IP-Adressen möglich
    		 Host(s) to which the ping check is to be performed.
    This can also be a host in the internal network if necessary.
    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.

    Default-Route anlegen




























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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
    Retrieved from "https://wiki.securepoint.de/index.php?title=UTM/NET/Ethernet_v12.6.0&oldid=93607"