Lancom Systems 1722 LS61350 Benutzerhandbuch

LANCOM 1722 VoIP

Stateful inspection firewall

Direction- dependant check based on connection information

Packet filter

Check based on the header information of an IP packet (IP or MAC source/destination addresses; source/destination ports, 
DiffServ attribute); remote- site dependant, direction dependant, bandwidth dependant

Masquerading

Network Address Translation (NAT), N:N mapping for the translation or masking of IP addresses

Port mapping

Provision of services from behind masqueraded computers, for example, to make an internal web server available from the 
outside (inverse masquerading)

Tagging

The firewall marks packets with routing tags, e.g. for policy- based routing

Actions

Forward, drop, reject, block sender address, close destination port, disconnect

Messaging

Via e- mail, SYSLOG or SNMP trap

Traffic shaping

Dynamic bandwidth management with IP traffic shaping

Bandwidth reservation

Dynamic reservation of minimum and maximum bandwidths, absolute or connection- related, separate settings for send and 
receive directions

DiffServ/TOS

Priority packet queuing based on DiffServ/TOS fields 

Packet- size control

Automatic packet- size control by fragmentation or Path Maximum Transmission Unit (PMTU) adjustment.

Layer 2/Layer 3 tagging

Automatic or fixed translation of layer- 2 priority information (802.11p- marked Ethernet frames) to layer- 3 DiffServ attributes in 
routing mode. Translation from layer 3 to layer 2 with automatic recognition of 802.1p- support in the destination device.

Intrusion Prevention

Monitoring and blockage of login attempts and port scans

IP spoofing

Source IP address check on all interfaces: The only accepted IP addresses belong to the previously defined IP network

Access control lists

Filtering of IP or MAC addresses and preset protocols for configuration access and LANCAPI

Denial of Service protection

Protection from fragmentation errors and SYN flooding

General

Detailed settings for handling reassembly, PING, stealth mode and AUTH port

URL blocker

Filtering of unwanted URLs based on DNS hitlists and wildcard filters

Password protection

Password- protected configuration access can be set for each interface

Alerts

Alerts via e- mail, SNMP- Traps and SYSLOG

Authentication mechanisms

PAP, CHAP and MS- CHAP as PPP authentication mechanism

Anti- theft

Anti- theft ISDN site verification over B or D channel (self- initiated call back and blocking)

VRRP

VRRP (Virtual Router Redundancy Protocol) for non- proprietary backup in case of failure of a device or remote station. Enables 
passive standby groups or reciprocal backup between multiple active devices including load balancing and freely definable 
backup priorities

FirmSafe

For completely safe software upgrades thanks to two stored firmware versions, incl. test mode for firmware updates

ISDN backup

In case of failure of the main connection, a backup connection is established over ISDN; automatic return to the main connection

Analog/GSM modem backup

Optional operation of an analog or GSM modem at the serial interface

Load balancing

Static and dynamic load balancing over up to 4 WAN connections; channel bundling with Multilink PPP (if supported by network 
operator)

VPN redundancy

Control of up to 16 redundant VPN gateways for high availability or load balancing

Line monitoring

Line monitoring with LCP echo monitoring, dead- peer detection and up to 4 addresses for end- to- end monitoring with ICMP 
polling.

Number of VPN tunnels

5 IPSec connections active simultaneously, 25 connections configurable

Hardware accelerator (optional)

Activated 3DES/AES hardware encryption with the VPN 25 option

IKE

IPSec key exchange with Preshared Key or certificate

Certificates

X.509 digital certificate support, compatible with Microsoft Server / Enterprise Server and OpenSSL, upload of PKCS#12 files via 
HTTPS interface

Certificate revocation lists (CRL)

CRL retrieval via HTTP

RAS user template

Configuration of all VPN client connections in IKE ConfigMode via a single entry

Proadaptive VPN

Automated configuration and dynamic creation of all necessary VPN and routing entries based on a default entry for site- to-
site connections. Propogation of dynamically learned routes via RIPv2, if required. 

Algorithms

3DES (168 bit), AES (128, 192 or 256 bit), Blowfish (128 bit), RSA (128 or - 448 bit) and CAST (128 bit); MD- 5 or SHA- 1 hashes