For example, take the DGS-3120-24SC with firmware 3.00.B026.
Configuring notifications from sensors:
config temperature threshold high 79 config temperature threshold low 11 config temperature trap state enable config temperature log state enable config fan trap state enable config power trap state enable
Adding an administrator account:
create account admin NAME PASSWORD
Enabling password storage in encrypted form:
enable password encryption
Setting the auto exit when connected via the console port:
config serial_port auto_logout never
Enabling the web interface:
enable web 80
Enabling display of information in the console in pagination mode:
enable clipaging
Width of the console line:
config terminal width 80
Disable saving the history of the entered commands:
disable command logging
Enabling password recovery:
enable password_recovery
Disabling trap notification when manipulating the configuration:
config configuration trap save disable config configuration trap upload disable config configuration trap download disable debug config state enable debug config error_reboot enable
Configuring Traffic Control:
config traffic control 1:1-1:24 broadcast enable multicast disable unicast disable action drop broadcast_threshold 100 multicast_threshold 131072 unicast_threshold 131072 countdown 5 time_interval 5 config traffic control auto_recover_time 0 config traffic trap none config traffic control log state enable
Enabling loop protection on ports other than the uplink ninth:
enable loopdetect config loopdetect recover_timer 600 interval 10 mode port-based config loopdetect log state enable config loopdetect ports 1:1 state enable config loopdetect ports 1:2 state enable config loopdetect ports 1:3 state enable config loopdetect ports 1:4 state enable config loopdetect ports 1:5 state enable config loopdetect ports 1:6 state enable config loopdetect ports 1:7 state enable config loopdetect ports 1:8 state enable config loopdetect ports 1:9 state disable config loopdetect ports 1:10 state enable config loopdetect ports 1:11 state enable config loopdetect ports 1:12 state enable config loopdetect ports 1:13 state enable config loopdetect ports 1:14 state enable config loopdetect ports 1:15 state enable config loopdetect ports 1:16 state enable config loopdetect ports 1:17 state enable config loopdetect ports 1:18 state enable config loopdetect ports 1:19 state enable config loopdetect ports 1:20 state enable config loopdetect ports 1:21 state enable config loopdetect ports 1:22 state enable config loopdetect ports 1:23 state enable config loopdetect ports 1:24 state enable config loopdetect trap none
Disabling the traffic mirroring function:
disable mirror
Log settings:
config log_save_timing on_demand disable syslog config system_severity trap notice config system_severity log information
Segmentation of traffic (prohibition of traffic between ports, uplink port is indicated ninth):
config traffic_segmentation 1:1-1:8,1:10-1:24 forward_list 1:9 config traffic_segmentation 1:9 forward_list 1:1-1:24
Permission to use large packages:
enable jumbo_frame
Example of port configuration:
config ports 1:1 medium_type copper speed auto flow_control disable learning enable state enable mdix auto description Kvartiru config ports 1:1-1:8 medium_type fiber speed auto flow_control disable learning enable state enable config ports 1:2 medium_type copper speed auto flow_control disable learning enable state enable mdix auto description BAT config ports 1:3-1:7 medium_type copper speed auto flow_control disable learning enable state enable mdix auto config ports 1:8 medium_type copper speed auto flow_control disable learning enable state enable mdix auto description Studentu config ports 1:9 speed auto flow_control disable learning enable state enable mdix auto description VHOD config ports 1:10 speed auto flow_control disable learning enable state enable mdix auto description Zheleznodorozhnaya config ports 1:11-1:24 speed auto flow_control disable learning enable state enable mdix auto
We only allow access to the switch from the specified addresses:
create trusted_host network 10.0.0.100/32 snmp telnet ssh http https ping create trusted_host network 172.16.0.0/24 snmp telnet ssh http https ping
SNMP settings:
disable snmp traps disable snmp authenticate_traps disable snmp linkchange_traps enable snmp config snmp system_name DGS-3120-24SC config snmp system_location текст config snmp linkchange_traps ports 1:1-1:24 enable config snmp coldstart_traps disable config snmp warmstart_traps disable config rmon trap rising_alarm enable config rmon trap falling_alarm enable delete snmp community public delete snmp community private create snmp community NEW view CommunityView read_only disable community_encryption
Example of VLAN configuration:
disable pvid auto_assign config vlan default delete 1:1-1:24 config vlan default advertisement enable create vlan core tag 207 config vlan core add tagged 1:8-1:13,1:15-1:16,1:18-1:20,1:22-1:24 config vlan core add forbidden 1:1-1:7 advertisement disable create vlan local_smart tag 226 config vlan local_smart add tagged 1:9-1:13,1:15-1:16,1:18-1:20,1:22-1:24 config vlan local_smart add untagged 1:1-1:7,1:14,1:17,1:21 advertisement disable create vlan local_smart2 tag 227 config vlan local_smart2 add tagged 1:8-1:9 advertisement disable create vlan hpna tag 228 config vlan hpna add tagged 1:9,1:12 advertisement disable create vlan multicast tag 229 config vlan multicast advertisement disable create vlan lift tag 300 config vlan lift add tagged 1:9,1:11,1:13 advertisement disable disable gvrp disable asymmetric_vlan disable vlan_trunk config port_vlan 1:1-1:7,1:9-1:24 gvrp_state disable ingress_checking enable acceptable_frame admit_all pvid 226 config port_vlan 1:8 gvrp_state disable ingress_checking enable acceptable_frame admit_all pvid 227
Standard settings for PORT_SECURITY:
config port_security system max_learning_addr no_limit config port_security trap state disable config port_security log state disable config port_security ports 1:1-1:24 admin_state disable max_learning_addr 32 action drop lock_address_mode deleteonreset
Here is an example of blocking mac addresses through ACL rules:
create access_profile profile_id 1 profile_name tank34 ethernet source_mac FF-FF-FF-FF-FF-FF config access_profile profile_id 1 add access_id 1 ethernet source_mac E8-9A-8F-BB-F8-44 vlan_based vlan_id 226 deny config access_profile profile_id 1 add access_id auto_assign ethernet source_mac F8-1A-67-FE-E7-00 port 1:24 deny config access_profile profile_id 1 add access_id auto_assign ethernet source_mac F8-1A-67-FE-E7-00 vlan_based vlan_id 226 deny
PowerSaving
config power_saving mode link_detection enable config power_saving mode length_detection disable config power_saving mode hibernation disable config power_saving mode led disable config power_saving mode port disable
LED-CTRL
config led state enable
MAC address storage time in the router table in seconds:
config fdb aging_time 300
Filtering NetBios (blocking access to the shared resources of users):
config filter netbios all state disable config filter netbios 1:1-1:24 state enable config filter extensive_netbios all state disable
Configuring protection against DoS attacks:
config dos_prevention dos_type land_attack action drop state enable config dos_prevention dos_type blat_attack action drop state enable config dos_prevention dos_type tcp_null_scan action drop state enable config dos_prevention dos_type tcp_xmasscan action drop state enable config dos_prevention dos_type tcp_synfin action drop state enable config dos_prevention dos_type tcp_syn_srcport_less_1024 action drop state enable config dos_prevention dos_type ping_death_attack action drop state enable config dos_prevention dos_type tcp_tiny_frag_attack action drop state enable config dos_prevention trap disable config dos_prevention log disable
We resolve replies from DHCP servers only from the uplink port, thereby blocking the others:
config filter dhcp_server ports all state disable config filter dhcp_server ports 1:1-1:8,1:10-1:24 state enable config filter dhcp_server illegal_server_log_suppress_duration 30min config filter dhcp_server trap disable config filter dhcp_server log enable
Configuring BPDU protection:
enable bpdu_protection config bpdu_protection recovery_timer 3000 config bpdu_protection log none config bpdu_protection ports 1:1-1:8,1:10-1:24 state enable config bpdu_protection ports 1:1-1:24 mode drop
Configuring the Switch Self-Protection “SAFEGUARD ENGINE”:
config safeguard_engine state enable utilization rising 100 falling 93 trap_log enable mode fuzzy
Standard SSH parameters:
config ssh algorithm 3DES enable config ssh algorithm AES128 enable config ssh algorithm AES192 enable config ssh algorithm AES256 enable config ssh algorithm arcfour enable config ssh algorithm blowfish enable config ssh algorithm cast128 enable config ssh algorithm twofish128 enable config ssh algorithm twofish192 enable config ssh algorithm twofish256 enable config ssh algorithm MD5 enable config ssh algorithm SHA1 enable config ssh algorithm RSA enable config ssh algorithm DSA enable config ssh authmode password enable config ssh authmode publickey enable config ssh authmode hostbased enable config ssh server maxsession 8 config ssh server contimeout 120 config ssh server authfail 2 config ssh server rekey never config ssh server port 22 config ssh user NAME authmode password config ssh publickey bypass_login_screen state disable disable ssh
Enabling telnet service:
enable telnet 23
SMTP
disable smtp config smtp server_port 25
Configuring SNTP time parameters:
enable sntp config time_zone operator + hour 2 min 0 config sntp primary 192.168.1.1 poll-interval 31720 config dst disable
LACP
config link_aggregation algorithm mac_source config lacp_port 1:1-1:24 mode passive
IP
config ipif_mac_mapping ipif System mac_offset 0 config ipif System ipaddress 10.0.0.235/24 vlan core config ipif System dhcpv6_client disable config ipif System proxy_arp disable local disable config ipif System dhcp_option12 state disable disable autoconfig
Disabling DHCP Relay
disable dhcp_relay disable dhcpv6_relay
ARP
config arp_aging time 20 config gratuitous_arp send ipif_status_up disable config gratuitous_arp send dup_ip_detected disable config gratuitous_arp learning disable
Setting the main route:
create iproute default 192.168.1.1 1 primary
Saving configuration:
save all