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NTP (Network Time Protocol) Document revision NaN (Mon Jul 19 07:25:46 GMT 2004) This document applies to V Table of Contents Table of Contents Summary Specifications Related Documents Description Client Property Description Example Server Property Description Notes Example Time Zone Notes Example <strong>General</strong> <strong>Information</strong> Summary NTP protocol allows synchronizing time among computers in network. It is good if there is an internet connection available and local NTP server is synchronized to correct time source. List of public NTP servers is available at http://ntp.isc.org/bin/view/Servers/WebHome#Browsing_the_Lists Specifications Packages required: ntp License required: level1 Home menu level: /system ntp Standards and Technologies: NTP version 3 (RFC 1305) Hardware usage: Not significant Related Documents • Package Management • IP Addresses and ARP Description Page 548 of 568 Copyright 1999-2005, MikroTik. All rights reserved. Mikrotik, RouterOS and RouterBOARD are trademarks of Mikrotikls SIA. Other trademarks and registred trademarks mentioned herein are properties of their respective owners.
Network Time Protocol (NTP) is used to synchronize time with some NTP servers in a network. MikroTik RouterOS provides both - NTP client and NTP server. NTP server listens on UDP port 123 NTP client synchronizes local clock with some other time source (NTP server). There are 4 modes in which NTP client can operate at: • unicast (Client/Server) mode - NTP client connects to specified NTP server. IP address of NTP server must be set in ntp-server and/or second-ntp-server parameters. At first client synchronizes to NTP server. Afterwards client periodically (64..1024s) sends time requests to NTP server. Unicast mode is the only one which uses ntp-server and second-ntp-server parameters. • broadcast mode - NTP client listens for broadcast messages sent by NTP server. After receiving first broadcast message, client synchronizes local clock using unicast mode, and afterwards does not send any packets to that NTP server. It uses received broadcast messages to adjust local clock. • multicast mode - acts the same as broadcast mode, only instead of broadcast messages (IP address 255.255.255.255) multicast messages are received (IP address 224.0.1.1). • manycast mode - actually is unicast mode only with unknown IP address of NTP server. To discover NTP server, client sends multicast message (IP 239.192.1.1). If NTP server is configured to listen for these multicast messages (manycast mode is enabled), it replies. After client receives reply, it enters unicast mode and synchronizes to that NTP server. But in parallel client continues to look for more NTP servers by sending multicast messages periodically. Client Home menu level: /system ntp client Property Description enabled (yes | no; default: no) - whether the NTP client is enabled or not mode (unicast | broadcast | multicast | manycast; default: unicast) - NTP client mode primary-ntp (IP address; default: 0.0.0.0) - specifies IP address of the primary NTP server secondary-ntp (IP address; default: 0.0.0.0) - specifies IP address of the secondary NTP server status (read-only: text) - status of the NTP client: • stopped - NTP is not running (NTP is disabled) • error - there was some internal error starting NTP service (please, try to restart (disable and enable) NTP service) • started - NTP client service is started, but NTP server is not found, yet • failed - NTP server sent invalid response to our NTP client (NTP server is not synchronized to some other time source) • reached - NTP server contacted. Comparing local clock to NTP server's clock (duration of this phase is approximately 30s) • timeset - local time changed to NTP server's time (duration of this phase is approximately 30s) Page 549 of 568 Copyright 1999-2005, MikroTik. All rights reserved. Mikrotik, RouterOS and RouterBOARD are trademarks of Mikrotikls SIA. Other trademarks and registred trademarks mentioned herein are properties of their respective owners.
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MikroTik RouterOS v2.8 Reference Ma
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Removing Device Drivers............
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General Information................
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Source NAT.........................
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Router User Groups.................
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LCD Information Display Configurati
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Basic Setup Guide Document revision
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Downloading and Installing the Mikr
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• You shoud have an account on ou
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The list of available commands at a
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Description Interface Management Be
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e assigned. If the setup offers you
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interface=Local queue=default prior
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Terminal Console Document revision
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[admin@MikroTik] ip route> /ping 10
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Notes Pressing [Tab] key while ente
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edit - this command is in every pla
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Package Management Document revisio
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• Check the information about the
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• Ethernet interface support •
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Specifications Sheet Document revis
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"El Torito" bootable CDs (you might
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Device Driver List Document revisio
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• 3c905B Cyclone 10/100/BNC • 3
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• Macronix 98715 PMAC • Macroni
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Compatibility: • Planet ENW-9601T
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• Olicom OC-2326 VIA vt612x 'Velo
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• Samsung SWL2000-N 11Mbit/s 802.
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• Moxa Smartio C104H/PCI, CP-114,
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Driver Management Document revision
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0xF0-0xFF FPU 0x100-0x13F [prism2_c
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General Interface Settings Document
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Description The traffic passing thr
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Additional Documents • http://www
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The interface should be enabled acc
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1 1.1.1.2/32 1.1.1.1 1.1.1.1 farsyn
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Finally we need to add IP addresses
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• accessing an Intranet/LAN of a
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[admin@MikroTik] interface l2tp-cli
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[admin@MikroTik] interface l2tp-ser
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To route the local Intranets over t
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On the L2TP server a user must be s
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CISCO/Aironet 2.4GHz 11Mbps Wireles
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Try to change the I/O base address
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Troubleshooting Description Keep in
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The default route should be set to
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The second router will have address
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1. Add an IPIP interface (by defaul
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[admin@MikroTik] interface ipip> pr
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Additional Documents • http://www
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MOXA C502 Dual-port Synchronous Int
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Example [admin@MikroTik] interface
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[admin@MikroTik] ip route> print Fl
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Flags: X - disabled, I - invalid, D
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Description VLANs are simply a way
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[admin@MikroTik] interface vlan> pr
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Description Installing the Wireless
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[admin@MikroTik] interface radiolan
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Ethernet interfaces respectively. T
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Flags: X - disabled, R - running 0
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Example with MikroTik Router to Mik
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ISDN (Integrated Services Digital N
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name (name) - name of the driver is
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undle-128K (yes | no; default: yes)
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# NAME SERVICE CALLER-ID PASSWORD P
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[admin@Mikrotik] ip route> add gate
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• For mobile or remote clients to
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10.1.1.12 PPTP server and use it as
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encoding (text) - encryption and en
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To route the local Intranets over t
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On the PPTP server a user must be s
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Wireless Client and Wireless Access
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protocol created to improve point-t
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with Atheros cards. There might be
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• ap-bridge - the interface is op
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wds-mode=disabled wds-default-bridg
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• exact-size - put as much packet
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ap (read-only: no | yes) - whether
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Property Description 2ghz-b-channel
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5305,5310,5315,5320,5325,5330,5335,
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arp (disabled | enabled | proxy-arp
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Description This command is used to
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• none - do not use encryption an
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ssid="test1" frequency=5180 band=5G
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Flags: X - disabled, R - running, D
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select the frequency that is used b
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2. On router with IP address 10.1.0
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To make a secure Ethernet bridge be
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Xpeed SDSL Interface Document revis
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[admin@r1] interface> print Flags:
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• I tried to connect two routers
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To add the driver for Arlan 655 ada
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Obtain the required license for 2.4
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MAC level bridging of Ethernet, Eth
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Always take care not to bridge virt
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designated-cost: 0 -- [Q quit|D dum
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idge firewall, not in forwarded pro
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[admin@MikroTik] ip address> print
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• Log Management Description You
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[admin@MikroTik] interface moxa-c10
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[admin@MikroTik] ip route> print Fl
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Flags: X - disabled, I - invalid, D
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• IP Addresses and ARP • Log Ma
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The driver for the Cyclades PC300/R
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PPPoE Document revision 1.4 (Fri Ap
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License required: level1 (limited t
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uptime (time) - connection time dis
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[admin@MikroTik] interface pppoe-se
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[admin@MT_Prism_AP] interface prism
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PPP and Asynchronous Interfaces Doc
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Example [admin@MikroTik] > /port pr
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Example You can add a PPP client us
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IP Addresses and ARP Document revis
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ether1 or ether2. Example [admin@Mi
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The MikroTik Router setup is as fol
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IP Security Document revision 3.1 (
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associated with matching SPD rule),
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traffic. AH is applied after ESP, a
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Such policies are created dynamical
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auth-algorithm (multiple choice, re
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in-accept: 12 in-accept-isakmp: 0 i
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[admin@Router1] > ip firewall src-n
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• on MikroTik router we can see i
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Routes, Equal Cost Multipath Routin
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dst-address (IP address/mask; defau
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Example There is always a table cal
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Command sequence to achieve this: 1
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Connection Tracking and Service Por
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appropriate ICMP request icmp-optio
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Packet Marking (Mangle) Document re
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action (accept | passthrough; defau
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How to Mangle NATted Traffic Suppos
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• Package Management • M3P Desc
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Firewall Filters Document revision
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As we can see, a packet can enter t
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may be among the slowest. Therefore
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Keep in mind, that protocol must be
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• Protect the customer's hosts Co
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comment="Reject and log everything
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ip firewall dst-nat add action=nat
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Notes Whenever possible, the same i
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Hardware usage: Increases with rule
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Description You can limit peer-to-p
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• Then create custom queue type w
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• Package Management • IP Addre
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The virtual IP addresses should be
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[admin@MikroTik] ip vrrp> address a
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Specifications Packages required: s
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limit-count (integer; default: 0) -
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limit-count (integer; default: 0) -
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IP address on it, and as many inter
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# INTERFACE TYPE 0 X ether1 externa
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Description The wireless protocol I
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DNS Client and Cache Document revis
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[admin@MikroTik] ip dns> Cache Moni
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Services, Protocols, and Ports Docu
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1719/udp 1720/tcp 1723/tcp 2000/tcp
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Example Walled Garden Description P
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The HotSpot interface should have a
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consulted first, then - a RADIUS se
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use transparent web proxy (yes | no
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allow-unencrypted-password=yes and
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[admin@MikroTik] ip hotspot profile
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ytes-out (read-only: integer) - how
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[admin@MikroTik] ip hotspot server>
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1. request for a remote host • if
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• popup - whether to pop-up check
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href="https://login.server.serv/log
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There are two kinds of errors: fata
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choose the address ranges, just mak
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13. Add hotspot chain: /ip firewall
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As we see from example, only hotspo
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DHCP Client and Server Document rev
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Standards and Technologies: DHCP De
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• requesting... - the DHCP client
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dns-server (text) - the DHCP client
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[admin@MikroTik] ip dhcp-server lea
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# NAME RANGES 0 dhcp_pool1 10.0.0.2
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one network address translation so
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mac-address (MAC address) - client'
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Audio CODECs Description Example AA
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The larger the jitter buffer, the l
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find-best-balance - series of test-
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monitor - monitor status of the voi
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(plugged | unplugged) - state of th
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aec (yes | no) - wheteher echo dete
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• to which voice port route the c
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• If nr=112 => matches the record
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• NAS-Port-Type - always Async
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marked as dynamic and can not be re
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egistering endpoint (with IP addres
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VOICE-PORT PREFIX 0 31 rob 31 1 33
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Volume levels : voice volume : 54 i
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call rsvp-sync voice rtp send-recv
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OSPF Document revision 1.3 (Mon Sep
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• if-installed-as-type-1 - send t
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• none - do not use authenticatio
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[admin@MikroTik] routing ospf> inte
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OSPF backup without using a tunnel
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Set redistribute-connected as as-ty
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We should change cost value in both
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0 Io 192.168.0.0/24 110 1 DC 192.16
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Packages required: routing License
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eceive (v1 | v1-2 | v2; default: v2
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Example To view the list of the rou
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[admin@MikroTik] routing rip> • C
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Related Documents • Package Manag
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[admin@modux] routing bgp network>
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Prefix Lists Document revision 1.2
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To accept the routes to the 172.16.
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Example Example Local IP Traffic Ac
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Notes There are three system groups
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Router User Remote AAA Home menu le
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To add the profile ex that will ass
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RADIUS user database is consulted o
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7 159.148.172.197 192.168.0.2 835 1
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timeouts: 5 bad-replies: 0 last-req
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• Session-Timeout - overrides ses
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• Acct-Output-Packets - number of
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OK:...", but the user cannot log on
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To use a Certificate (which contain
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equirements of your CA Example To i
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There you can delete unnecessary fi
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The Ping Command Command name: /pin
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Bandwidth Control Document revision
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you put no limit and choose all cla
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than burst-threshold. This type of
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[admin@MikroTik] queue interface> C
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Example To mark all the traffic goi
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[admin@MikroTik] queue simple> prin
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max-limit=131072 And the same for L
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3. Add a queue tree rule that will
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Configuration Export and Import Doc
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Home menu level: /import Descriptio
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• No Set support • No Trap supp
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• /system resource Example To see
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ip.ipNetToMediaTable.ipNetToMediaEn
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Description MRTG (Multi Router Traf
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MAC Telnet Server and Client Docume
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Ping Document revision 08-Jun-2004
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Example To disable MAC pings: [admi
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Additional Documents • DNS relate
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interface (name) - the name of the
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Bandwidth Test Document revision 1.
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[admin@MikroTik] tool bandwidth-ser
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Packet Sniffer Document revision 1.
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filter-address1 and filter-address2
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• ospf - Open Shortest Path First
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Packet Sniffer Host Home menu level
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Traceroute Document revision 1.2 (F
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ICMP Bandwidth Test Document revisi
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System Resource Management Document
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IRQ Usage Monitor Command name: /sy
Page 510 and 511: 7 00:0e.0 Atheros Communications AR
Page 512 and 513: [admin@Gateway] system clock> print
Page 514 and 515: How to Connect PowerTip LCD to a Pa
Page 516 and 517: [admin@MikroTik] system lcd> print
Page 518 and 519: Support Output File Document revisi
Page 520 and 521: SSH (Secure Shell) Server and Clien
Page 522 and 523: SSH Client Command name: /system ss
Page 524 and 525: General Information Command name: /
Page 526 and 527: • http://www.ctsystems.org/rs.htm
Page 528 and 529: To connect to a device connected to
Page 530 and 531: • Precise Positioning Service (PP
Page 532 and 533: Scripting Host and Complementary To
Page 534 and 535: License required: level1 Home menu
Page 536 and 537: [admin@MikroTik] ip address> /user
Page 538 and 539: * - multiplication. Binary operator
Page 540 and 541: [admin@MikroTik] interface> :put (~
Page 542 and 543: Local Variables g1=this is global v
Page 544 and 545: In the example below monitor action
Page 546 and 547: Home menu level: /system script job
Page 548 and 549: Specifications Packages required: s
Page 550 and 551: [admin@MikroTik] system script> ..
Page 552 and 553: Specifications Packages required: a
Page 554 and 555: In the following example we will ad
Page 556 and 557: Packages required: ups License requ
Page 558 and 559: Runtime Calibration Command name: /
Page 562 and 563: • synchronized - local clock is s
Page 564 and 565: RouterBoard-specific functions Docu
Page 566 and 567: Firmware upgrade can take up to 20s
Page 568 and 569: LED Managment Command name: :led De
Page 570 and 571: License Management Document revisio
Page 572 and 573: can not move license on another har
Page 574 and 575: • ERROR: Key for specified softwa
Page 576 and 577: MikroTik RouterOS implements indust
Page 578 and 579: Router has several global configura
Page 580: Notes print command has the followi
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