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/ A firewalld icmptype provides the information for an Internet Control Message Protocol (ICMP) type for firewalld. A firewalld service is a combination of ports, protocols, modules and destination addresses. A firewalld zone defines the level of trust for network connections, interfaces and source addresses bound to the zone. The zone combines services, ports, protocols, masquerading, port/packet forwarding, icmp filters and rich rules. The zone can be bound to interfaces and source addresses. Action Action: Add Chain Add Command Line Add Context Add Entry Add Forward Port Add ICMP Type Add Interface Add Passthrough Add Port Add Rich Rule Add Rule Add Service Add Source Add User Id Add User Name Add Zone Add a rule with the arguments args to a chain in a table with a priority. Add additional ports or port ranges, which need to be accessible for all hosts or networks that can connect to the machine. Add entries to bind interfaces to the zone. If the interface will be used by a connection, the zone will be set to the zone specified in the connection. Add entries to forward ports either from one port to another on the local system or from the local system to another system. Forwarding to another system is only useful if the interface is masqueraded. Port forwarding is IPv4 only. Additional chains for use with rules. Address All network traffic is blocked. Args: Audit Audit: Authorization failed. Base ICMP Type Settings Base Service Settings Base Zone Settings Block all network traffic Bold entries are mandatory, all others are optional. Built-in icmp, rename not supported. Built-in service, rename not supported. Built-in zone, rename not supported. Chain: Chains Change Default Zone Change Zones of Connections... Change default zone for connections or interfaces. Change which zone a network connection belongs to. Changes applied. Command lines Configuration: Configure Shields UP/Down Zones... Configure Shields Up/Down Zones Connection to FirewallD established. Connection to FirewallD lost. Connections Contexts Current default zone of the system. Currently visible configuration. Runtime configuration is the actual active configuration. Permanent configuration will be active after service or system reload or restart. Default Target Default Zone Default Zone: Default Zone: '%s' Default zone changed to '%s'. Description: Dest Destination Destination: Direct Chain Direct Configuration Direct Passthrough Rule Direct Rule Edit Chain Edit Command Line Edit Context Edit Entry Edit Firewall Settings... Edit Forward Port Edit ICMP Type Edit Interface Edit Passthrough Edit Port Edit Rich Rule Edit Rule Edit Service Edit Source Edit User Id Edit User Name Edit Zone Element Element: Enable Notifications Error Failed to load icons. Family Family: Firewall Firewall Applet Firewall Configuration FirewallD has been reloaded. For host or network white or blacklisting deactivate the element. Forward to another port Forwarding to another system is only useful if the interface is masqueraded.
Do you want to masquerade this zone ? Here you can define which services are trusted in the zone. Trusted services are accessible from all hosts and networks that can reach the machine from connections, interfaces and sources bound to this zone. Here you can select the zones used for Shields Up and Shields Down. Here you can set rich language rules for the zone. ICMP Filter ICMP Type ICMP Types ICMP Types can only be changed in the permanent configuration view. The runtime configuration of ICMP Types is fixed. IP address: IPv4 IPv4: IPv6 IPv6: Icmp Type If a command entry on the whitelist ends with an asterisk '*', then all command lines starting with the command will match. If the '*' is not there the absolute command inclusive arguments must match. If you enable local forwarding, you have to specify a port. This port has to be different to the source port. If you enable masquerading, IP forwarding will be enabled for your IPv4 networks. If you specify destination addresses, the service entry will be limited to the destination address and type. If both entries are empty, there is no limitation. Ignore Interfaces Invalid name Level: Load ICMP Type Defaults Load Service Defaults Load Zone Defaults Local forwarding Lockdown Lockdown Whitelist Lockdown locks firewall configuration so that only applications on lockdown whitelist are able to change it. Lockdown: Log: Make runtime configuration permanent Mark the ICMP types in the list, which should be rejected. All other ICMP types are allowed to pass the firewall. The default is no limitation. Masquerade zone Masquerading Masquerading allows you to set up a host or router that connects your local network to the internet. Your local network will not be visible and the hosts appear as a single address on the internet. Masquerading is IPv4 only. Modules Name already exists Name: Network traffic is not blocked anymore. No Active Zones. No connection to firewall daemon Other Protocol: Panic Mode Panic Mode: Panic mode means that all incoming and outgoing packets are dropped. Passthrough Permanent Please be careful with passthrough rules to not damage the firewall. Please configure base ICMP type settings: Please configure base service settings: Please configure base zone settings: Please enter a port and protocol. Please enter a protocol. Please enter a rich rule. Please enter the command line. Please enter the context. Please enter the user id. Please enter the user name. Please select a service. Please select an ICMP type Please select default zone from the list below. Please select ipv and enter the args. Please select ipv and table and enter the chain name. Please select ipv and table, chain priority and enter the args. Please select the source and destination options according to your needs. Port Port / Port Range: Port Forwarding Port and Protocol Ports Prefix: Priority: Protocol Protocol: Reload Firewalld Reloads firewall rules. Current permanent configuration will become new runtime configuration. i.e. all runtime only changes done until reload are lost with reload if they have not been also in permanent configuration. Remove Remove Chain Remove Command Line Remove Context Remove Entry Remove Forward Port Remove ICMP Type Remove Interface Remove Passthrough Remove Port Remove Rich Rule Remove Rule Remove Service Remove Source Remove User Id Remove User Name Remove Zone Rich Rule Rich Rules Rules Runtime Runtime To Permanent Select zone for connection '%s' Select zone for interface '%s' Select zone for source %s Service Services Services can only be changed in the permanent configuration view. The runtime configuration of services is fixed. Shields Down Zone: Shields Up Shields Up Zone: Short: Source Source: Sources Specify whether this ICMP Type is available for IPv4 and/or IPv6. Src Table: Target: The Internet Control Message Protocol (ICMP) is mainly used to send error messages between networked computers, but additionally for informational messages like ping requests and replies. The direct configuration gives a more direct access to the firewall. These options require user to know basic iptables concepts, i.e. tables, chains, commands, parameters and targets. Direct configuration should be used only as a last resort when it is not possible to use other firewalld features. The ipv argument of each option has to be ipv4 or ipv6 or eb. With ipv4 it will be for iptables, with ipv6 for ip6tables and with eb for ethernet bridges (ebtables). The lockdown feature is a light version of user and application policies for firewalld. It limits changes to the firewall. The lockdown whitelist can contain commands, contexts, users and user ids. The passthrough rules are directly passed through to the firewall and are not placed in special chains. All iptables, ip6tables and ebtables options can be used. The priority is used to order rules. Priority 0 means add rule on top of the chain, with a higher priority the rule will be added further down. Rules with the same priority are on the same level and the order of these rules is not fixed and may change. If you want to make sure that a rule will be added after another one, use a low priority for the first and a higher for the following. This feature is useful for people using the default zones mostly. For users, that are changing zones of connections, it might be of limited use. To Address To Port To enable this Action has to be 'reject' and Family either 'ipv4' or 'ipv6' (not both). Used by network connection '%s' User ID User Ids User ids. User name User names User names. Version: Warning With limit: Zone Zone '%s' activated for interface '%s' Zone '%s' activated for source '%s' Zone '%s': ICMP type '%s' is not available. Zone '%s': Service '%s' is not available. Zone '{zone}' active for connection '{connection}' on interface '{interface}' Zone '{zone}' active for interface '{interface}' Zone '{zone}' active for source {source} Zone '{zone}' {activated_deactivated} for connection '{connection}' on interface '{interface}' Zone '{zone}' {activated_deactivated} for interface '{interface}' Zone '{zone}' {activated_deactivated} for source '{source}' Zones _File _Help _Options _View accept activated alert critical day deactivated debug disabled drop eb emergency enabled error firewall;network;security;iptables;netfilter; forward-port hour icmp-block info inverted ipv4 ipv4 and ipv6 ipv6 ipv: level limit log masquerade minute nat notice port protocol raw reject second security service warning with Type: yes Project-Id-Version: PACKAGE VERSION
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POT-Creation-Date: 2020-01-13 14:38-0500
PO-Revision-Date: 2015-02-26 09:43+0000
Last-Translator: Copied by Zanata
Language-Team: Bengali (India) (http://www.transifex.com/projects/p/firewalld/language/bn_IN/)
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āĻā§āĻāĻ˛ā§ āĻāĻ¨ā§āĻāĻžāĻ°āĻĢā§āĻ¸āĻā§āĻ˛āĻŋ āĻ
āĻžāĻŦāĻĻā§āĻ§ āĻāĻ°āĻ¤ā§ āĻāĻ¨ā§āĻā§āĻ°āĻŋāĻā§āĻ˛āĻŋ āĻ¯ā§āĻ āĻāĻ°ā§āĻ¨āĨ¤ āĻāĻ¨ā§āĻāĻžāĻ°āĻĢā§āĻ¸ āĻāĻāĻāĻŋ āĻ¸āĻāĻ¯ā§āĻā§āĻ° āĻĻā§āĻŦāĻžāĻ°āĻž āĻŦā§āĻ¯āĻŦāĻšā§āĻ¤ āĻšāĻ˛ā§, āĻ
āĻā§āĻāĻ˛ āĻ¸āĻāĻ¯ā§āĻā§āĻ° āĻĻā§āĻŦāĻžāĻ°āĻž āĻ¨āĻŋāĻ°ā§āĻĻāĻŋāĻˇā§āĻ āĻ
āĻā§āĻāĻ˛ā§ āĻ¨āĻŋāĻ°ā§āĻĻāĻŋāĻˇā§āĻ āĻšāĻŦā§āĨ¤ āĻ¸ā§āĻĨāĻžāĻ¨ā§ā§ āĻ¸āĻŋāĻ¸ā§āĻā§āĻŽā§āĻ° āĻŽāĻ§ā§āĻ¯ā§ āĻ
āĻ¨ā§āĻ¯ āĻĒā§āĻ°ā§āĻā§ āĻ
āĻĨāĻŦāĻž āĻ¸ā§āĻĨāĻžāĻ¨ā§ā§ āĻ¸āĻŋāĻ¸ā§āĻā§āĻŽ āĻĨā§āĻā§ āĻ
āĻ¨ā§āĻ¯ āĻ¸āĻŋāĻ¸ā§āĻā§āĻŽā§ āĻĒā§āĻ°ā§āĻ āĻĢāĻ°āĻā§āĻžāĻ°ā§āĻĄ āĻāĻ°āĻžāĻ° āĻāĻ¨ā§āĻ¯ āĻŽāĻžāĻ¨ āĻ˛āĻŋāĻā§āĻ¨āĨ¤ āĻāĻ¨ā§āĻāĻžāĻ°āĻĢā§āĻ¸ masquerade āĻāĻ°āĻž āĻĨāĻžāĻāĻ˛ā§ āĻĒā§āĻĨāĻ āĻ¸āĻŋāĻ¸ā§āĻā§āĻŽā§ āĻĒā§āĻ°ā§āĻ āĻĢāĻ°āĻā§āĻžāĻ°ā§āĻĄ āĻāĻ°āĻž āĻāĻĒāĻāĻžāĻ°ā§ āĻšāĻŦā§āĨ¤ āĻĒā§āĻ°ā§āĻ āĻĢāĻ°āĻā§āĻžāĻ°ā§āĻĄāĻŋāĻ āĻŦā§āĻ¯āĻŦāĻ¸ā§āĻĨāĻž āĻļā§āĻ§ā§āĻŽāĻžāĻ¤ā§āĻ° IPv4-āĻ° āĻā§āĻˇā§āĻ¤ā§āĻ°ā§ āĻĒā§āĻ°āĻ¯ā§āĻā§āĻ¯āĨ¤ āĻ¨āĻŋāĻ¯āĻŧāĻŽā§āĻ° āĻ¸āĻāĻā§ āĻŦā§āĻ¯āĻŦāĻšāĻžāĻ° āĻāĻ°āĻžāĻ° āĻ
āĻ¤āĻŋāĻ°āĻŋāĻā§āĻ¤ āĻā§āĻ¨āĨ¤ āĻ āĻŋāĻāĻžāĻ¨āĻž āĻ¸āĻāĻ˛ āĻ¨ā§āĻāĻāĻ¯āĻŧāĻžāĻ°ā§āĻ āĻā§āĻ°ā§āĻ¯āĻžāĻĢāĻŋāĻ āĻ
āĻŦāĻ°ā§āĻĻā§āĻ§āĨ¤ Args: āĻ
āĻĄāĻŋāĻ āĻ
āĻĄāĻŋāĻ: āĻ
āĻ¨ā§āĻŽā§āĻĻāĻ¨ āĻŦā§āĻ¯āĻ°ā§āĻĨāĨ¤ āĻĒā§āĻ°āĻžāĻĨāĻŽāĻŋāĻ ICMP āĻ§āĻ°āĻ¨ āĻ¸ā§āĻāĻŋāĻ āĻĒā§āĻ°āĻžāĻĨāĻŽāĻŋāĻ āĻĒāĻ°āĻŋāĻˇā§āĻŦāĻž āĻ¸ā§āĻāĻŋāĻ āĻĒā§āĻ°āĻžāĻĨāĻŽāĻŋāĻ āĻ
āĻā§āĻāĻ˛ āĻ¸ā§āĻāĻŋāĻ āĻ¸āĻāĻ˛ āĻ¨ā§āĻāĻāĻ¯āĻŧāĻžāĻ°ā§āĻ āĻā§āĻ°ā§āĻ¯āĻžāĻĢāĻŋāĻ āĻ
āĻŦāĻ°ā§āĻĻā§āĻ§ āĻāĻ°ā§āĻ¨ āĻŽā§āĻāĻž āĻšāĻ°āĻĢā§ āĻ˛ā§āĻāĻž āĻŦāĻžāĻ§ā§āĻ¯āĻ¤āĻžāĻŽā§āĻ˛āĻ, āĻŦāĻžāĻāĻŋ āĻ¸āĻŦ āĻŦā§āĻāĻ˛ā§āĻĒāĻŋāĻāĨ¤ āĻŦāĻŋāĻ˛ā§āĻ-āĻāĻ¨ icmp, āĻ¨āĻžāĻŽ āĻĒāĻ°āĻŋāĻŦāĻ°ā§āĻ¤āĻ¨ āĻ¸āĻŽāĻ°ā§āĻĨāĻŋāĻ¤ āĻ¨āĻ¯āĻŧāĨ¤ āĻŦāĻŋāĻ˛ā§āĻ-āĻāĻ¨ āĻĒāĻ°āĻŋāĻˇā§āĻŦāĻž, āĻ¨āĻžāĻŽ āĻĒāĻ°āĻŋāĻŦāĻ°ā§āĻ¤āĻ¨ āĻ¸āĻŽāĻ°ā§āĻĨāĻŋāĻ¤ āĻ¨āĻ¯āĻŧāĨ¤ āĻŦāĻŋāĻ˛ā§āĻ-āĻāĻ¨ āĻ
āĻā§āĻāĻ˛, āĻ¨āĻžāĻŽ āĻĒāĻ°āĻŋāĻŦāĻ°ā§āĻ¤āĻ¨ āĻ¸āĻŽāĻ°ā§āĻĨāĻŋāĻ¤ āĻ¨āĻ¯āĻŧāĨ¤ āĻā§āĻ¨: āĻā§āĻ¨ āĻĄāĻŋāĻĢāĻ˛ā§āĻ āĻ
āĻā§āĻāĻ˛ āĻĒāĻ°āĻŋāĻŦāĻ°ā§āĻ¤āĻ¨ āĻāĻ°ā§āĻ¨ āĻ¸āĻāĻ¯ā§āĻā§āĻ° āĻ
āĻā§āĻāĻ˛ āĻĒāĻ°āĻŋāĻŦāĻ°ā§āĻ¤āĻ¨ āĻāĻ°ā§āĻ¨... āĻ¸āĻāĻ¯ā§āĻ āĻŦāĻž āĻāĻ¨ā§āĻāĻžāĻ°āĻĢā§āĻ¸ā§āĻ° āĻāĻ¨ā§āĻ¯ āĻĄāĻŋāĻĢāĻ˛ā§āĻ āĻ
āĻā§āĻāĻ˛ āĻĒāĻ°āĻŋāĻŦāĻ°ā§āĻ¤āĻ¨ āĻāĻ°ā§āĻ¨āĨ¤ āĻāĻāĻāĻŋ āĻ¨ā§āĻāĻāĻ¯āĻŧāĻžāĻ°ā§āĻ āĻ¸āĻāĻ¯ā§āĻ āĻā§āĻ¨ āĻ
āĻā§āĻāĻ˛ā§āĻ° āĻ¸āĻāĻā§ āĻ¸āĻāĻ¯ā§āĻā§āĻ¤ āĻ¤āĻž āĻĒāĻ°āĻŋāĻŦāĻ°ā§āĻ¤āĻ¨ āĻāĻ°ā§āĻ¨āĨ¤ āĻĒāĻ°āĻŋāĻŦāĻ°ā§āĻ¤āĻ¨āĻā§āĻ˛āĻŋ āĻĒā§āĻ°āĻ¯ā§āĻā§āĻ¯ āĻšāĻ¯āĻŧā§āĻā§āĨ¤ āĻāĻŽā§āĻ¯āĻžāĻ¨ā§āĻĄ āĻ˛āĻžāĻāĻ¨ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ°ā§āĻļāĻ¨: āĻļāĻŋāĻ˛ā§āĻĄ āĻāĻ°ā§āĻ§ā§āĻŦā§/āĻ¨āĻŋāĻŽā§āĻ¨ā§ āĻ
āĻā§āĻāĻ˛ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ° āĻāĻ°ā§āĻ¨... āĻļāĻŋāĻ˛ā§āĻĄ āĻāĻ°ā§āĻ§ā§āĻŦā§/āĻ¨āĻŋāĻŽā§āĻ¨ā§ āĻ
āĻā§āĻāĻ˛ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ° āĻāĻ°ā§āĻ¨ FirewallD āĻ āĻ¸āĻāĻ¯ā§āĻ āĻ¸ā§āĻĨāĻžāĻĒāĻŋāĻ¤ āĻšā§ā§āĻā§āĨ¤ FirewallD āĻ āĻ¸āĻžāĻĨā§ āĻ¸āĻāĻ¯ā§āĻ āĻŦāĻŋāĻā§āĻāĻŋāĻ¨ā§āĻ¨ āĻšā§ā§āĻā§āĨ¤ āĻ¸āĻāĻ¯ā§āĻ āĻāĻ¨āĻā§āĻā§āĻ¸āĻ āĻ¸āĻŋāĻ¸ā§āĻā§āĻŽā§āĻ° āĻŦāĻ°ā§āĻ¤āĻŽāĻžāĻ¨ āĻĄāĻŋāĻĢāĻ˛ā§āĻ āĻ
āĻā§āĻāĻ˛āĨ¤ āĻŦāĻ°ā§āĻ¤āĻŽāĻžāĻ¨ā§ āĻĻā§āĻļā§āĻ¯āĻŽāĻžāĻ¨ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ°ā§āĻļāĻ¨āĨ¤ āĻ°āĻžāĻ¨āĻāĻžāĻāĻŽ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ°ā§āĻļāĻ¨ āĻšāĻ˛ āĻĒā§āĻ°āĻā§āĻ¤ āĻ¸āĻā§āĻ°āĻŋāĻ¯āĻŧ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ°ā§āĻļāĻ¨āĨ¤ āĻ¸ā§āĻĨāĻžāĻ¯āĻŧā§ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ°ā§āĻļāĻ¨ āĻĒāĻ°āĻŋāĻˇā§āĻŦāĻž āĻŦāĻž āĻ¸āĻŋāĻ¸ā§āĻā§āĻŽ āĻĒā§āĻ¨āĻāĻ˛ā§āĻĄ āĻŦāĻž āĻŦāĻ¨ā§āĻ§ āĻšāĻ¯āĻŧā§ āĻāĻžāĻ˛ā§ āĻšāĻāĻ¯āĻŧāĻžāĻ° āĻĒāĻ°ā§ āĻ¸āĻā§āĻ°āĻŋāĻ¯āĻŧ āĻšāĻŦā§āĨ¤ āĻĄāĻŋāĻĢāĻ˛ā§āĻ āĻāĻžāĻ°ā§āĻā§āĻ āĻĄāĻŋāĻĢāĻ˛ā§āĻ āĻ
āĻā§āĻāĻ˛ āĻĄāĻŋāĻĢāĻ˛ā§āĻ āĻ
āĻā§āĻāĻ˛: āĻĄāĻŋāĻĢāĻ˛ā§āĻ āĻ
āĻā§āĻāĻ˛: '%s' āĻĄāĻŋāĻĢāĻ˛ā§āĻ āĻ
āĻā§āĻāĻ˛ '%s' āĻ āĻĒāĻ°āĻŋāĻŦāĻ°ā§āĻ¤āĻ¨ āĻāĻ°āĻž āĻšāĻ¯āĻŧā§āĻā§āĨ¤ āĻŦāĻŋāĻŦāĻ°āĻŖ: Dest āĻāĻ¨ā§āĻ¤āĻŦā§āĻ¯āĻ¸ā§āĻĨāĻ˛ āĻāĻ¨ā§āĻ¤āĻŦā§āĻ¯: āĻ¸āĻ°āĻžāĻ¸āĻžāĻ°āĻŋ āĻā§āĻ¨ āĻĄāĻžāĻāĻ°ā§āĻā§āĻ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ°ā§āĻļāĻ¨ āĻĄāĻžāĻāĻ°ā§āĻā§āĻ Passthrough āĻ¨āĻŋāĻ¯āĻŧāĻŽ āĻĄāĻžāĻāĻ°ā§āĻā§āĻ āĻ¨āĻŋāĻ¯āĻŧāĻŽ āĻā§āĻ¨ āĻ¸āĻŽā§āĻĒāĻžāĻĻāĻ¨āĻž āĻāĻ°ā§āĻ¨ āĻāĻŽāĻžāĻ¨ā§āĻĄ-āĻ˛āĻžāĻāĻ¨ āĻ¸āĻŽā§āĻĒāĻžāĻĻāĻ¨ āĻāĻ°ā§āĻ¨ āĻāĻ¨āĻā§āĻā§āĻ¸āĻ āĻ¸āĻŽā§āĻĒāĻžāĻĻāĻ¨āĻž āĻāĻ°ā§āĻ¨ āĻāĻ¨āĻā§āĻ°āĻŋ āĻ¸āĻŽā§āĻĒāĻžāĻĻāĻ¨āĻž āĻĢāĻžāĻ¯āĻŧāĻžāĻ°āĻāĻ¯āĻŧāĻžāĻ˛ āĻ¸ā§āĻāĻŋāĻ āĻ¸āĻŽā§āĻĒāĻžāĻĻāĻ¨ āĻāĻ°ā§āĻ¨... āĻĢāĻ°ā§āĻ¯āĻŧāĻžāĻ°ā§āĻĄ āĻĒā§āĻ°ā§āĻ āĻ¸āĻŽā§āĻĒāĻžāĻĻāĻ¨āĻž āĻāĻ°ā§āĻ¨ ICMP āĻ§āĻ°āĻ¨ āĻ¸āĻŽā§āĻĒāĻžāĻĻāĻ¨ āĻāĻ°ā§āĻ¨ āĻāĻ¨ā§āĻāĻžāĻ°āĻĢā§āĻ¸ āĻ¸āĻŽā§āĻĒāĻžāĻĻāĻ¨ āĻāĻ°ā§āĻ¨ Passthrough āĻ¸āĻŽā§āĻĒāĻžāĻĻāĻ¨āĻž āĻāĻ°ā§āĻ¨ āĻĒā§āĻ°ā§āĻ āĻ¸āĻŽā§āĻĒāĻžāĻĻāĻ¨āĻž āĻāĻ°ā§āĻ¨ āĻ¸āĻŽā§āĻĻā§āĻ§ āĻ¨āĻŋāĻ¯āĻŧāĻŽ āĻ¸āĻŽā§āĻĒāĻžāĻĻāĻ¨āĻž āĻāĻ°ā§āĻ¨ āĻ¨āĻŋā§āĻŽ āĻ¸āĻŽā§āĻĒāĻžāĻĻāĻ¨ āĻāĻ°ā§āĻ¨ āĻĒāĻ°āĻŋāĻˇā§āĻŦāĻž āĻ¸āĻŽā§āĻĒāĻžāĻĻāĻ¨ āĻāĻ°ā§āĻ¨ āĻ¸ā§āĻ°ā§āĻ¸ āĻ¸āĻŽā§āĻĒāĻžāĻĻāĻ¨ āĻāĻ°ā§āĻ¨ āĻŦā§āĻ¯āĻŦāĻšāĻžāĻ°āĻāĻžāĻ°ā§āĻ° āĻ
āĻžāĻāĻĄāĻŋ āĻ¸āĻŽā§āĻĒāĻžāĻĻāĻ¨ āĻāĻ°ā§āĻ¨ āĻŦā§āĻ¯āĻŦāĻšāĻžāĻ°āĻāĻžāĻ°ā§āĻ° āĻ¨āĻžāĻŽ āĻ¸āĻŽā§āĻĒāĻžāĻĻāĻ¨ āĻāĻ°ā§āĻ¨ āĻ
āĻā§āĻāĻ˛ āĻ¸āĻŽā§āĻĒāĻžāĻĻāĻ¨ āĻāĻ°ā§āĻ¨ āĻāĻĒāĻžāĻĻāĻžāĻ¨ āĻāĻĒāĻžāĻĻāĻžāĻ¨: āĻŦāĻŋāĻā§āĻāĻĒā§āĻ¤āĻŋ āĻ¸āĻā§āĻ°āĻŋāĻ¯āĻŧ āĻāĻ°ā§āĻ¨ āĻ¤ā§āĻ°ā§āĻāĻŋ āĻ
āĻžāĻāĻāĻ¨āĻā§āĻ˛āĻŋ āĻ˛ā§āĻĄ āĻāĻ°āĻ¤ā§ āĻŦā§āĻ¯āĻ°ā§āĻĨāĨ¤ āĻĒāĻ°āĻŋāĻŦāĻžāĻ° āĻĒāĻ°āĻŋāĻŦāĻžāĻ°: āĻĢāĻžā§āĻžāĻ°āĻā§āĻžāĻ˛ āĻĢāĻžā§āĻžāĻ°āĻā§āĻžāĻ˛ āĻ
ā§āĻ¯āĻžāĻĒā§āĻ˛ā§āĻ āĻĢāĻžā§āĻžāĻ°āĻā§āĻžāĻ˛ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ°ā§āĻļāĻ¨ FirewallD āĻ
āĻžāĻŦāĻžāĻ° āĻ˛ā§āĻĄ āĻāĻ°āĻž āĻšāĻ¯āĻŧā§āĻā§āĨ¤ āĻšā§āĻ¸ā§āĻ āĻŦāĻž āĻ¨ā§āĻāĻāĻ¯āĻŧāĻžāĻ°ā§āĻ āĻšā§āĻ¯āĻŧāĻžāĻāĻ āĻŦāĻž āĻāĻžāĻ˛ā§ āĻ¤āĻžāĻ˛āĻŋāĻāĻžāĻā§āĻā§āĻ¤āĻāĻ°āĻŖā§āĻ° āĻā§āĻˇā§āĻ¤ā§āĻ°ā§ āĻāĻĒāĻžāĻĻāĻžāĻ¨ āĻ¨āĻŋāĻˇā§āĻā§āĻ°āĻŋāĻ¯āĻŧ āĻāĻ°ā§āĻ¨āĨ¤ āĻā§āĻ¨ā§ āĻĒā§āĻĨāĻ āĻĒā§āĻ°ā§āĻā§ āĻĢāĻ°āĻā§āĻžāĻ°ā§āĻĄ āĻāĻ°āĻž āĻšāĻŦā§ āĻāĻ¨ā§āĻāĻžāĻ°āĻĢā§āĻ¸ āĻāĻĻā§āĻŽāĻŦā§āĻļ āĻ§āĻžāĻ°āĻŖ āĻāĻ°āĻ˛ā§ āĻļā§āĻ§ā§āĻŽāĻžāĻ¤ā§āĻ° āĻ¤āĻāĻ¨āĻ āĻ
āĻ¨ā§āĻ¯ āĻ¸āĻŋāĻ¸ā§āĻā§āĻŽā§ āĻĢāĻ°ā§āĻ¯āĻŧāĻžāĻ°ā§āĻĄāĻŋāĻ āĻāĻĒāĻ¯ā§āĻā§āĨ¤
āĻ
āĻžāĻĒāĻ¨āĻŋ āĻāĻŋ āĻāĻ āĻ
āĻā§āĻāĻ˛āĻā§ āĻāĻĻā§āĻŽāĻŦā§āĻļ āĻĒāĻĄāĻŧāĻžāĻ¤ā§ āĻāĻžāĻ¨? āĻ
āĻā§āĻāĻ˛ā§ āĻā§āĻ¨ āĻĒāĻ°āĻŋāĻˇā§āĻŦāĻžāĻā§āĻ˛āĻŋ āĻŦāĻŋāĻļā§āĻŦāĻ¸ā§āĻ¤ āĻ¤āĻž āĻ
āĻžāĻĒāĻ¨āĻŋ āĻāĻāĻžāĻ¨ā§ āĻ¨āĻŋāĻ°ā§āĻĻāĻŋāĻˇā§āĻ āĻāĻ°āĻ¤ā§ āĻĒāĻžāĻ°āĻŦā§āĻ¨āĨ¤ āĻāĻ āĻ
āĻā§āĻāĻ˛ā§āĻ° āĻ¸āĻāĻ¯ā§āĻ, āĻāĻ¨ā§āĻāĻžāĻ°āĻĢā§āĻ¸ āĻāĻŦāĻ āĻ¸ā§āĻ°ā§āĻ¸ āĻĨā§āĻā§ āĻŽā§āĻļāĻŋāĻ¨ā§ āĻĒā§āĻāĻāĻžāĻ¤ā§ āĻĒāĻžāĻ°ā§ āĻāĻŽāĻ¨ āĻ¸āĻāĻ˛ āĻšā§āĻ¸ā§āĻ āĻāĻŦāĻ āĻ¨ā§āĻāĻāĻ¯āĻŧāĻžāĻ°ā§āĻ āĻĨā§āĻā§ āĻŦāĻŋāĻļā§āĻŦāĻ¸ā§āĻ¤ āĻĒāĻ°āĻŋāĻˇā§āĻŦāĻžāĻā§āĻ˛āĻŋ āĻ
ā§āĻ¯āĻžāĻā§āĻ¸ā§āĻ¸āĻ¯ā§āĻā§āĻ¯āĨ¤ āĻļāĻŋāĻ˛ā§āĻĄ āĻāĻ°ā§āĻ§ā§āĻŦ āĻāĻŦāĻ āĻļāĻŋāĻ˛ā§āĻĄ āĻ¨āĻŋāĻŽā§āĻ¨ā§āĻ° āĻāĻ¨ā§āĻ¯ āĻŦā§āĻ¯āĻŦāĻšā§āĻ¤ āĻ
āĻā§āĻāĻ˛āĻā§āĻ˛āĻŋ āĻ
āĻžāĻĒāĻ¨āĻŋ āĻāĻāĻžāĻ¨ā§ āĻ¨āĻŋāĻ°ā§āĻŦāĻžāĻāĻ¨ āĻāĻ°āĻ¤ā§ āĻĒāĻžāĻ°āĻŦā§āĻ¨āĨ¤ āĻāĻāĻžāĻ¨ā§ āĻ
āĻžāĻĒāĻ¨āĻŋ āĻ
āĻā§āĻāĻ˛ā§āĻ° āĻāĻ¨ā§āĻ¯ āĻ¸āĻŽā§āĻĻā§āĻ§ āĻāĻžāĻˇāĻž āĻ¨āĻŋāĻ¯āĻŧāĻŽ āĻ¨āĻŋāĻ°ā§āĻĻāĻŋāĻˇā§āĻ āĻāĻ°āĻ¤ā§ āĻĒāĻžāĻ°āĻŦā§āĻ¨āĨ¤ ICMP āĻĢāĻŋāĻ˛ā§āĻāĻžāĻ° ICMP āĻĒā§āĻ°āĻā§āĻ¤āĻŋ ICMP āĻĒā§āĻ°āĻā§āĻ¤āĻŋ ICMP āĻ§āĻ°āĻ¨āĻā§āĻ˛āĻŋ āĻļā§āĻ§ā§āĻŽāĻžāĻ¤ā§āĻ° āĻ¸ā§āĻĨāĻžāĻ¯āĻŧā§ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ°ā§āĻļāĻ¨ āĻ°ā§āĻĒā§ āĻĒāĻ°āĻŋāĻŦāĻ°ā§āĻ¤āĻ¨ āĻāĻ°āĻž āĻ¯ā§āĻ¤ā§ āĻĒāĻžāĻ°ā§āĨ¤ ICMP āĻ§āĻ°āĻ¨āĻā§āĻ˛āĻŋāĻ° āĻ°āĻžāĻ¨āĻāĻžāĻāĻŽ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ°ā§āĻļāĻ¨ āĻ¨āĻŋāĻ°ā§āĻĻāĻŋāĻˇā§āĻāĨ¤ IP āĻ āĻŋāĻāĻžāĻ¨āĻž: IPv4 IPv4: IPv6 IPv6: Icmp āĻ§āĻ°āĻ¨ whitelist āĻ āĻā§āĻ¨ā§ āĻāĻŽā§āĻ¯āĻžāĻ¨ā§āĻĄ āĻāĻ¨ā§āĻā§āĻ°āĻŋ āĻ¤āĻžāĻ°āĻāĻž āĻāĻŋāĻšā§āĻ¨ '*' āĻĻāĻŋāĻ¯āĻŧā§ āĻ¸āĻŽāĻžāĻĒā§āĻ¤ āĻšāĻ˛ā§, āĻāĻŽā§āĻ¯āĻžāĻ¨ā§āĻĄ āĻĻāĻŋāĻ¯āĻŧā§ āĻļā§āĻ°ā§ āĻšāĻāĻ¯āĻŧāĻž āĻ¸āĻŽāĻ¸ā§āĻ¤ āĻāĻŽā§āĻ¯āĻžāĻ¨ā§āĻĄ āĻ˛āĻžāĻāĻ¨ āĻŽāĻŋāĻ˛āĻŦā§āĨ¤ '*' āĻāĻĒāĻ¸ā§āĻĨāĻŋāĻ¤ āĻ¨āĻž āĻĨāĻžāĻāĻ˛ā§, āĻ
āĻžāĻ°ā§āĻā§āĻŽā§āĻ¨ā§āĻ āĻ¸āĻŽā§āĻ¤ āĻāĻ°āĻŽ āĻāĻŽā§āĻ¯āĻžāĻ¨ā§āĻĄ āĻ
āĻŦāĻļā§āĻ¯āĻ āĻŽāĻŋāĻ˛āĻ¤ā§ āĻšāĻŦā§āĨ¤ āĻ¸ā§āĻĨāĻžāĻ¨ā§ā§āĻ°ā§āĻĒā§ āĻĢāĻ°āĻā§āĻžāĻ°ā§āĻĄāĻŋāĻ āĻāĻ°āĻ¤ā§ āĻāĻā§āĻā§āĻ āĻšāĻ˛ā§, āĻāĻāĻāĻŋ āĻĒā§āĻ°ā§āĻ āĻ¨āĻŋāĻ°ā§āĻĻā§āĻļ āĻāĻ°āĻž āĻāĻŦāĻļā§āĻ¯āĻāĨ¤ āĻāĻĻā§āĻĻāĻŋāĻˇā§āĻ āĻĒā§āĻ°ā§āĻāĻāĻŋ āĻā§āĻ¸ āĻĒā§āĻ°ā§āĻā§āĻ° āĻĨā§āĻā§ āĻĒā§āĻĨāĻ āĻšāĻā§āĻž āĻāĻŦāĻļā§āĻ¯āĻāĨ¤ āĻ
āĻžāĻĒāĻ¨āĻŋ āĻŽā§āĻ¯āĻžāĻ¸āĻāĻŋāĻāĻ°ā§āĻĄāĻŋāĻ āĻ¸āĻā§āĻ°āĻŋāĻ¯āĻŧ āĻāĻ°āĻ˛ā§, IP āĻĢāĻ°ā§āĻ¯āĻŧāĻžāĻ°ā§āĻĄāĻŋāĻ āĻ
āĻžāĻĒāĻ¨āĻžāĻ° IPv4 āĻ¨ā§āĻāĻāĻ¯āĻŧāĻžāĻ°ā§āĻāĻā§āĻ˛āĻŋāĻ° āĻāĻ¨ā§āĻ¯ āĻ¸āĻā§āĻ°āĻŋāĻ¯āĻŧ āĻāĻ°āĻž āĻšāĻŦā§āĨ¤ āĻ
āĻžāĻĒāĻ¨āĻŋ āĻāĻ¨ā§āĻ¤āĻŦā§āĻ¯ āĻ āĻŋāĻāĻžāĻ¨āĻžāĻā§āĻ˛āĻŋ āĻ¨āĻŋāĻ°ā§āĻĻāĻŋāĻˇā§āĻ āĻāĻ°āĻ˛ā§, āĻĒāĻ°āĻŋāĻˇā§āĻŦāĻž āĻāĻ¨ā§āĻā§āĻ°āĻŋ āĻāĻ¨ā§āĻ¤āĻŦā§āĻ¯ āĻ āĻŋāĻāĻžāĻ¨āĻž āĻāĻŦāĻ āĻ§āĻ°āĻ¨ā§āĻ° āĻŽāĻ§ā§āĻ¯ā§āĻ āĻ¸ā§āĻŽāĻžāĻŦāĻĻā§āĻ§ āĻĨāĻžāĻāĻŦā§āĨ¤ āĻāĻāĻ¯āĻŧ āĻāĻ¨ā§āĻā§āĻ°āĻŋāĻ āĻāĻžāĻ˛āĻŋ āĻĨāĻžāĻāĻ˛ā§, āĻā§āĻ¨ā§ āĻ¸ā§āĻŽāĻžāĻŦāĻĻā§āĻ§āĻ¤āĻž āĻĨāĻžāĻā§ āĻ¨āĻžāĨ¤ āĻ
āĻā§āĻ°āĻžāĻšā§āĻ¯ āĻāĻ°āĻž āĻšāĻŦā§ āĻāĻ¨ā§āĻāĻžāĻ°āĻĢā§āĻ¸ āĻ
āĻŦā§āĻ§ āĻ¨āĻžāĻŽ āĻ¸ā§āĻ¤āĻ°: ICMP āĻ§āĻ°āĻ¨ āĻĄāĻŋāĻĢāĻ˛ā§āĻ āĻ¯ā§āĻ āĻāĻ°ā§āĻ¨ āĻĒāĻ°āĻŋāĻˇā§āĻŦāĻž āĻĄāĻŋāĻĢāĻ˛ā§āĻ āĻ˛ā§āĻĄ āĻāĻ°ā§āĻ¨ āĻ
āĻā§āĻāĻ˛ āĻĄāĻŋāĻĢāĻ˛ā§āĻ āĻ˛ā§āĻĄ āĻāĻ°ā§āĻ¨ āĻ¸ā§āĻĨāĻžāĻ¨ā§ā§āĻ°ā§āĻĒā§ āĻĢāĻ°āĻā§āĻžāĻ°ā§āĻĄāĻŋāĻ āĻ˛āĻāĻĄāĻžāĻāĻ¨ āĻ˛āĻāĻĄāĻžāĻāĻ¨ āĻšā§āĻ¯āĻŧāĻžāĻāĻāĻ˛āĻŋāĻ¸ā§āĻ Lockdown āĻĢāĻžāĻ¯āĻŧāĻžāĻ°āĻāĻ¯āĻŧāĻžāĻ˛ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ°ā§āĻļāĻ¨ āĻ˛āĻ āĻāĻ°ā§, āĻ¯āĻžāĻ¤ā§ āĻāĻŋāĻ¨āĻž āĻļā§āĻ§ā§āĻŽāĻžāĻ¤ā§āĻ° lockdown whitelist āĻ āĻ
ā§āĻ¯āĻžāĻĒā§āĻ˛āĻŋāĻā§āĻļāĻ¨ āĻ¤āĻžāĻ° āĻĒāĻ°āĻŋāĻŦāĻ°ā§āĻ¤āĻ¨ āĻāĻ°āĻ¤ā§ āĻĒāĻžāĻ°ā§āĨ¤ āĻ˛āĻāĻĄāĻžāĻāĻ¨: āĻ˛āĻ: āĻ°āĻžāĻ¨āĻāĻžāĻāĻŽ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ°ā§āĻļāĻ¨ āĻ¸ā§āĻĨāĻžā§ā§ āĻāĻ°ā§āĻ¨ āĻĒā§āĻ°āĻ¤ā§āĻ¯āĻžāĻā§āĻ¯āĻžāĻ¨ā§āĻ° āĻāĻĻā§āĻĻā§āĻļā§āĻ¯ā§, āĻ¤āĻžāĻ˛āĻŋāĻāĻžāĻ° āĻŽāĻ§ā§āĻ¯ā§ ICMP-āĻ° āĻ§āĻ°āĻ¨āĻā§āĻ˛āĻŋ āĻāĻŋāĻšā§āĻ¨āĻŋāĻ¤ āĻāĻ°ā§āĻ¨āĨ¤ āĻ
āĻ¨ā§āĻ¯āĻžāĻ¨ā§āĻ¯ āĻ¸āĻāĻ˛ ICMP-āĻ° āĻ§āĻ°āĻ¨āĻā§āĻ˛āĻŋ āĻĢāĻžā§āĻžāĻ°āĻā§āĻžāĻ˛ā§āĻ° āĻŽāĻ§ā§āĻ¯ā§ āĻĒā§āĻ°āĻŦā§āĻļ āĻāĻ°āĻ¤ā§ āĻ¸āĻā§āĻˇāĻŽ āĻšāĻŦā§āĨ¤ āĻĄāĻŋāĻĢāĻ˛ā§āĻāĻ°ā§āĻĒā§ āĻā§āĻ¨ā§ āĻĒā§āĻ°āĻ¤āĻŋāĻ°ā§āĻ§ āĻāĻ°āĻž āĻšā§ āĻ¨āĻžāĨ¤ Masquerade āĻ
āĻā§āĻāĻ˛ Masquerading āĻ¸ā§āĻĨāĻžāĻ¨ā§ā§ āĻ¨ā§āĻāĻā§āĻžāĻ°ā§āĻ, āĻāĻ¨ā§āĻāĻžāĻ°āĻ¨ā§āĻā§āĻ° āĻ¸āĻžāĻĨā§ āĻ¸āĻāĻ¯ā§āĻā§āĻ¤ āĻāĻ°āĻžāĻ° āĻāĻ¨ā§āĻ¯ āĻšā§āĻ¸ā§āĻ āĻ
āĻĨāĻŦāĻž āĻ°āĻžāĻāĻāĻžāĻ° āĻĒā§āĻ°āĻ¸ā§āĻ¤ā§āĻ¤āĻŋāĻ° āĻ¸āĻŽā§ Masquerading āĻ¸āĻšā§āĻžāĻāĨ¤ āĻāĻĒāĻ¨āĻžāĻ° āĻ¸ā§āĻĨāĻžāĻ¨ā§ā§ āĻ¨ā§āĻāĻā§āĻžāĻ°ā§āĻ āĻĒā§āĻ°āĻāĻžāĻļāĻŋāĻ¤ āĻšāĻŦā§ āĻ¨āĻž āĻ āĻāĻ¨ā§āĻāĻžāĻ°āĻ¨ā§āĻā§ āĻāĻāĻāĻŋ āĻšā§āĻ¸ā§āĻ āĻ°ā§āĻĒā§ āĻĒā§āĻ°āĻ¸ā§āĻ¤ā§āĻ¤ āĻāĻ°āĻž āĻšāĻŦā§āĨ¤ Masquerading āĻļā§āĻ§ā§āĻŽāĻžāĻ¤ā§āĻ° IPv4-āĻ° āĻā§āĻˇā§āĻ¤ā§āĻ°ā§ āĻĒā§āĻ°āĻ¯ā§āĻā§āĻ¯āĨ¤ āĻŽāĻĄāĻŋāĻāĻ˛ āĻ¨āĻžāĻŽ āĻāĻ¤āĻŋāĻŽāĻ§ā§āĻ¯ā§āĻ āĻāĻĒāĻ¸ā§āĻĨāĻŋāĻ¤ āĻ¨āĻžāĻŽ: āĻ¨ā§āĻāĻāĻ¯āĻŧāĻžāĻ°ā§āĻ āĻā§āĻ°ā§āĻ¯āĻžāĻĢāĻŋāĻ āĻ
āĻžāĻ° āĻ
āĻŦāĻ°ā§āĻĻā§āĻ§ āĻ¨ā§āĻāĨ¤ āĻā§āĻ¨ā§ āĻ¸āĻā§āĻ°āĻŋāĻ¯āĻŧ āĻ
āĻā§āĻāĻ˛ āĻ¨ā§āĻāĨ¤ āĻĢāĻžāĻ¯āĻŧāĻžāĻ°āĻāĻ¯āĻŧāĻžāĻ˛ āĻĄāĻŋāĻŽā§āĻ¨ā§ āĻā§āĻ¨ā§ āĻ¸āĻāĻ¯ā§āĻ āĻ¨ā§āĻ āĻ
āĻ¨ā§āĻ¯ āĻĒā§āĻ°ā§āĻā§āĻāĻ˛: āĻĒā§āĻ¯āĻžāĻ¨āĻŋāĻ āĻŽā§āĻĄ āĻĒā§āĻ¯āĻžāĻ¨āĻŋāĻ āĻŽā§āĻĄ: āĻĒā§āĻ¯āĻžāĻ¨āĻŋāĻ āĻŽā§āĻĄā§āĻ° āĻ
āĻ°ā§āĻĨ āĻšāĻ˛, āĻ¸āĻāĻ˛ āĻāĻ¨āĻāĻžāĻŽāĻŋāĻ āĻāĻŦāĻ āĻ
āĻžāĻāĻāĻā§āĻ¯āĻŧāĻŋāĻ āĻĒā§āĻ¯āĻžāĻā§āĻ āĻĄā§āĻ°āĻĒ āĻāĻ°āĻž āĻšāĻ¯āĻŧāĨ¤ Passthrough āĻ¸ā§āĻĨāĻžāĻ¯āĻŧā§ āĻĢāĻžāĻ¯āĻŧāĻžāĻ°āĻāĻ¯āĻŧāĻžāĻ˛ āĻ¯āĻžāĻ¤ā§ āĻā§āĻˇāĻ¤āĻŋāĻāĻ¸ā§āĻĨ āĻ¨āĻž āĻšāĻ¯āĻŧ āĻ¤āĻžāĻ° āĻāĻ¨ā§āĻ¯ āĻ
āĻ¨ā§āĻā§āĻ°āĻš āĻāĻ°ā§ passthrough āĻ¨āĻŋāĻ¯āĻŧāĻŽā§āĻ° āĻā§āĻˇā§āĻ¤ā§āĻ°ā§ āĻ¯āĻ¤ā§āĻ¨āĻŦāĻžāĻ¨ āĻšā§āĻ¨āĨ¤ āĻ
āĻ¨ā§āĻā§āĻ°āĻš āĻāĻ°ā§ āĻĒā§āĻ°āĻžāĻĨāĻŽāĻŋāĻ ICMP āĻ§āĻ°āĻ¨ āĻ¸ā§āĻāĻŋāĻ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ° āĻāĻ°ā§āĻ¨: āĻ
āĻ¨ā§āĻā§āĻ°āĻš āĻāĻ°ā§ āĻĒā§āĻ°āĻžāĻĨāĻŽāĻŋāĻ āĻĒāĻ°āĻŋāĻˇā§āĻŦāĻž āĻ¸ā§āĻāĻŋāĻ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ° āĻāĻ°ā§āĻ¨: āĻ
āĻ¨ā§āĻā§āĻ°āĻš āĻāĻ°ā§ āĻĒā§āĻ°āĻžāĻĨāĻŽāĻŋāĻ āĻ
āĻā§āĻāĻ˛ āĻ¸ā§āĻāĻŋāĻ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ° āĻāĻ°ā§āĻ¨: āĻ
āĻ¨ā§āĻā§āĻ°āĻš āĻāĻ°ā§ āĻāĻāĻāĻŋ āĻĒā§āĻ°ā§āĻ āĻāĻŦāĻ āĻĒā§āĻ°ā§āĻā§āĻāĻ˛ āĻĻāĻŋāĻ¨āĨ¤ āĻ
āĻ¨ā§āĻā§āĻ°āĻš āĻāĻ°ā§ āĻāĻāĻāĻŋ āĻĒā§āĻ°ā§āĻā§āĻāĻ˛ āĻĻāĻŋāĻ¨āĨ¤ āĻ
āĻ¨ā§āĻā§āĻ°āĻš āĻāĻ°ā§ āĻāĻāĻāĻŋ āĻ¸āĻŽā§āĻĻā§āĻ§ āĻ¨āĻŋāĻ¯āĻŧāĻŽ āĻĻāĻŋāĻ¨āĨ¤ āĻ
āĻ¨ā§āĻā§āĻ°āĻš āĻāĻ°ā§ āĻāĻŽā§āĻ¯āĻžāĻ¨ā§āĻĄ āĻ˛āĻžāĻāĻ¨ āĻāĻ˛ā§āĻ˛ā§āĻ āĻāĻ°ā§āĻ¨āĨ¤ āĻ
āĻ¨ā§āĻā§āĻ°āĻš āĻāĻ°ā§ āĻĒā§āĻ°āĻ¸āĻā§āĻ āĻāĻ˛ā§āĻ˛ā§āĻ āĻāĻ°ā§āĻ¨āĨ¤ āĻ
āĻ¨ā§āĻā§āĻ°āĻš āĻāĻ°ā§ āĻŦā§āĻ¯āĻŦāĻšāĻžāĻ°āĻāĻžāĻ°ā§āĻ° āĻ
āĻžāĻāĻĄāĻŋ āĻ˛āĻŋāĻā§āĻ¨āĨ¤ āĻ
āĻ¨ā§āĻā§āĻ°āĻš āĻāĻ°ā§ āĻŦā§āĻ¯āĻŦāĻšāĻžāĻ°āĻāĻžāĻ°ā§āĻ° āĻ¨āĻžāĻŽ āĻ˛āĻŋāĻā§āĻ¨āĨ¤ āĻ
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āĻ¨ā§āĻā§āĻ°āĻš āĻāĻ°ā§ āĻāĻāĻāĻŋ ICMP āĻ§āĻ°āĻ¨ āĻ¨āĻŋāĻ°ā§āĻŦāĻžāĻāĻ¨ āĻāĻ°ā§āĻ¨ āĻ
āĻ¨ā§āĻā§āĻ°āĻš āĻāĻ°ā§ āĻ¨ā§āĻā§āĻ° āĻ¤āĻžāĻ˛āĻŋāĻāĻž āĻĨā§āĻā§ āĻĄāĻŋāĻĢāĻ˛ā§āĻ āĻ
āĻā§āĻāĻ˛ āĻ¨āĻŋāĻ°ā§āĻŦāĻžāĻāĻ¨ āĻāĻ°ā§āĻ¨āĨ¤ āĻ
āĻ¨ā§āĻā§āĻ°āĻš āĻāĻ°ā§ ipv āĻ¨āĻŋāĻ°ā§āĻŦāĻžāĻāĻ¨ āĻāĻ°ā§āĻ¨ āĻāĻŦāĻ args āĻĒā§āĻ°āĻŦā§āĻļ āĻāĻ°āĻžāĻ¨āĨ¤ āĻ
āĻ¨ā§āĻā§āĻ°āĻš āĻāĻ°ā§ ipv āĻāĻŦāĻ āĻ¸āĻžāĻ°āĻŖā§ āĻ¨āĻŋāĻ°ā§āĻŦāĻžāĻāĻ¨ āĻāĻ°ā§āĻ¨ āĻāĻŦāĻ āĻā§āĻ¨ā§āĻ° āĻ¨āĻžāĻŽ āĻ˛āĻŋāĻā§āĻ¨āĨ¤ āĻ
āĻ¨ā§āĻā§āĻ°āĻš āĻāĻ°ā§ ipv āĻāĻŦāĻ āĻ¸āĻžāĻ°āĻŖā§, āĻā§āĻ¨ āĻ
āĻā§āĻ°āĻžāĻ§āĻŋāĻāĻžāĻ° āĻ¨āĻŋāĻ°ā§āĻŦāĻžāĻāĻ¨ āĻāĻ°ā§āĻ¨ āĻāĻŦāĻ args āĻĒā§āĻ°āĻŦā§āĻļ āĻāĻ°āĻžāĻ¨āĨ¤ āĻĒā§āĻ°ā§ā§āĻāĻ¨ āĻ
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āĻā§āĻ°āĻžāĻ§āĻŋāĻāĻžāĻ°: āĻĒā§āĻ°ā§āĻā§āĻāĻ˛ āĻĒā§āĻ°ā§āĻā§āĻāĻ˛: Firewalld āĻĒā§āĻ¨āĻ°āĻžā§ āĻ˛ā§āĻĄ āĻāĻ°ā§āĻ¨ āĻĢāĻžāĻ¯āĻŧāĻžāĻ°āĻāĻ¯āĻŧāĻžāĻ˛ āĻ¨āĻŋāĻ¯āĻŧāĻŽ āĻĒā§āĻ¨āĻāĻ˛ā§āĻĄ āĻāĻ°ā§āĨ¤ āĻŦāĻ°ā§āĻ¤āĻŽāĻžāĻ¨ āĻ¸ā§āĻĨāĻžāĻ¯āĻŧā§ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ°ā§āĻļāĻ¨ āĻ¨āĻ¤ā§āĻ¨ āĻ°āĻžāĻ¨āĻāĻžāĻāĻŽ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ°ā§āĻļāĻ¨ āĻšāĻŦā§āĨ¤ āĻ
āĻ°ā§āĻĨāĻžā§, āĻĒā§āĻ¨āĻāĻ˛ā§āĻĄ āĻĒāĻ°ā§āĻ¯āĻ¨ā§āĻ¤ āĻšāĻāĻ¯āĻŧāĻž āĻ¸āĻŽāĻ¸ā§āĻ¤ āĻļā§āĻ§ā§āĻŽāĻžāĻ¤ā§āĻ° āĻ°āĻžāĻ¨āĻāĻžāĻāĻŽ āĻĒāĻ°āĻŋāĻŦāĻ°ā§āĻ¤āĻ¨āĻā§āĻ˛āĻŋ āĻĒā§āĻ¨āĻāĻ˛ā§āĻĄā§āĻ° āĻ¸āĻžāĻĨā§ āĻ¨āĻˇā§āĻ āĻšāĻ¯āĻŧā§ āĻ¯āĻžāĻ¯āĻŧāĨ¤ āĻ¯āĻĻāĻŋ āĻ¨āĻž āĻ¤āĻžāĻ°āĻž āĻ¸ā§āĻĨāĻžāĻ¯āĻŧā§ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ°ā§āĻļāĻ¨ā§āĻ āĻĨā§āĻā§ āĻĨāĻžāĻā§āĨ¤ āĻ
āĻĒāĻ¸āĻžāĻ°āĻŖ āĻā§āĻ¨ āĻ¸āĻ°āĻžāĻ¨ āĻāĻŽāĻžāĻ¨ā§āĻĄ-āĻ˛āĻžāĻāĻ¨ āĻ¸āĻ°āĻžāĻ¨ āĻāĻ¨āĻā§āĻā§āĻ¸āĻ āĻ¸āĻ°āĻžāĻ¨ āĻāĻ¨āĻā§āĻ°āĻŋ āĻ
āĻĒāĻ¸āĻžāĻ°āĻŖ āĻĢāĻ°ā§āĻ¯āĻŧāĻžāĻ°ā§āĻĄ āĻĒā§āĻ°ā§āĻ āĻ
āĻĒāĻ¸āĻžāĻ°āĻŖ āĻāĻ°ā§āĻ¨ ICMP āĻ§āĻ°āĻ¨ āĻ
āĻĒāĻ¸āĻžāĻ°āĻŖ āĻāĻ°ā§āĻ¨ āĻāĻ¨ā§āĻāĻžāĻ°āĻĢā§āĻ¸ āĻ¸āĻ°āĻžāĻ¨ Passthrough āĻ¸āĻ°āĻžāĻ¨ āĻĒā§āĻ°ā§āĻ āĻ
āĻĒāĻ¸āĻžāĻ°āĻŖ āĻāĻ°ā§āĻ¨ āĻ¸āĻŽā§āĻĻā§āĻ§ āĻ¨āĻŋāĻ¯āĻŧāĻŽ āĻ¸āĻ°āĻžāĻ¨ āĻ¨āĻŋāĻ¯āĻŧāĻŽ āĻ¸āĻ°āĻžāĻ¨ āĻĒāĻ°āĻŋāĻˇā§āĻŦāĻž āĻ
āĻĒāĻ¸āĻžāĻ°āĻŖ āĻāĻ°ā§āĻ¨ āĻ¸ā§āĻ°ā§āĻ¸ āĻ¸āĻ°āĻžāĻ¨ āĻŦā§āĻ¯āĻŦāĻšāĻžāĻ°āĻāĻžāĻ°ā§āĻ° āĻ
āĻžāĻāĻĄāĻŋ āĻ¸āĻ°āĻžāĻ¨ āĻŦā§āĻ¯āĻŦāĻšāĻžāĻ°āĻāĻžāĻ°ā§āĻ° āĻ¨āĻžāĻŽ āĻ¸āĻ°āĻžāĻ¨ āĻ
āĻā§āĻāĻ˛ āĻ¸āĻ°āĻžāĻ¨ āĻ¸āĻŽā§āĻĻā§āĻ§ āĻ¨āĻŋāĻ¯āĻŧāĻŽ āĻ¸āĻŽā§āĻĻā§āĻ§ āĻ¨āĻŋāĻ¯āĻŧāĻŽāĻā§āĻ˛āĻŋ āĻ¨āĻŋāĻ¯āĻŧāĻŽ āĻ°āĻžāĻ¨āĻāĻžāĻāĻŽ āĻ°āĻžāĻ¨āĻāĻžāĻāĻŽ āĻĨā§āĻā§ āĻ¸ā§āĻĨāĻžā§ā§ '%s' āĻ¸āĻāĻ¯ā§āĻā§āĻ° āĻāĻ¨ā§āĻ¯ āĻ
āĻā§āĻāĻ˛ āĻ¨āĻŋāĻ°ā§āĻŦāĻžāĻāĻ¨ āĻāĻ°ā§āĻ¨ āĻāĻ¨ā§āĻāĻžāĻ°āĻĢā§āĻ¸ '%s' āĻāĻ° āĻāĻ¨ā§āĻ¯ āĻ
āĻā§āĻāĻ˛ āĻ¨āĻŋāĻ°ā§āĻŦāĻžāĻāĻ¨ āĻāĻ°ā§āĻ¨ āĻ¸ā§āĻ°ā§āĻ¸ '%s' āĻāĻ° āĻāĻ¨ā§āĻ¯ āĻ
āĻā§āĻāĻ˛ āĻ¨āĻŋāĻ°ā§āĻŦāĻžāĻāĻ¨ āĻāĻ°ā§āĻ¨ āĻĒāĻ°āĻŋāĻ¸ā§āĻŦāĻž āĻĒāĻ°āĻŋāĻˇā§āĻŦāĻž āĻĒāĻ°āĻŋāĻˇā§āĻŦāĻžāĻā§āĻ˛āĻŋ āĻļā§āĻ§ā§āĻŽāĻžāĻ¤ā§āĻ° āĻ¸ā§āĻĨāĻžāĻ¯āĻŧā§ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ°ā§āĻļāĻ¨ āĻ°ā§āĻĒā§ āĻĒāĻ°āĻŋāĻŦāĻ°ā§āĻ¤āĻ¨ āĻāĻ°āĻž āĻ¯ā§āĻ¤ā§ āĻĒāĻžāĻ°ā§āĨ¤ āĻĒāĻ°āĻŋāĻˇā§āĻŦāĻžāĻā§āĻ˛āĻŋāĻ° āĻ°āĻžāĻ¨āĻāĻžāĻāĻŽ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ°ā§āĻļāĻ¨ āĻ¨āĻŋāĻ°ā§āĻĻāĻŋāĻˇā§āĻāĨ¤ āĻļāĻŋāĻ˛ā§āĻĄ āĻ¨āĻŋāĻŽā§āĻ¨ āĻ
āĻā§āĻāĻ˛: āĻļāĻŋāĻ˛ā§āĻĄ āĻāĻ°ā§āĻ§ā§āĻŦā§ āĻļāĻŋāĻ˛ā§āĻĄ āĻāĻ°ā§āĻ§ā§āĻŦ āĻ
āĻā§āĻāĻ˛: āĻ¸āĻāĻā§āĻˇāĻŋāĻĒā§āĻ¤: āĻā§āĻ¸ āĻā§āĻ¸āĻ¸ā§āĻĨāĻ˛: āĻā§āĻ¸ IPv4 āĻāĻŦāĻ/āĻ
āĻĨāĻŦāĻž IPv6 āĻāĻ° āĻāĻ¨ā§āĻ¯ āĻāĻ ICMP āĻ§āĻ°āĻ¨ āĻāĻĒāĻ˛āĻŦā§āĻ§ āĻāĻŋāĻ¨āĻž āĻ¤āĻž āĻ¨āĻŋāĻ°ā§āĻĻāĻŋāĻˇā§āĻ āĻāĻ°ā§āĻ¨āĨ¤ Src āĻ¸āĻžāĻ°āĻŖā§: āĻāĻžāĻ°ā§āĻā§āĻ: āĻāĻ¨ā§āĻāĻžāĻ°āĻ¨ā§āĻ āĻāĻ¨ā§āĻā§āĻ°ā§āĻ˛ āĻŽā§āĻ¸ā§āĻ āĻĒā§āĻ°ā§āĻāĻāĻ˛ (ICMP) āĻĒā§āĻ°ā§ā§āĻ āĻāĻ°ā§ āĻ¨ā§āĻāĻā§āĻžāĻ°ā§āĻā§āĻ° āĻŽāĻ§ā§āĻ¯ā§ āĻāĻĒāĻ¸ā§āĻĨāĻŋāĻ¤ āĻāĻŽā§āĻĒāĻŋāĻāĻāĻžāĻ°āĻā§āĻ˛āĻŋāĻ° āĻŽāĻ§ā§āĻ¯ā§ āĻ¤ā§āĻ°ā§āĻāĻŋ āĻŦāĻžāĻ°ā§āĻ¤āĻž āĻāĻĻāĻžāĻ¨ āĻĒā§āĻ°āĻĻāĻžāĻ¨ āĻāĻ°āĻž āĻšā§āĨ¤ āĻāĻĒāĻ°āĻ¨ā§āĻ¤ā§, āĻŦāĻŋāĻŦāĻŋāĻ§ āĻ¤āĻĨā§āĻ¯ āĻ¯ā§āĻŽāĻ¨ ping-āĻ° āĻ
āĻ¨ā§āĻ°ā§āĻ§ āĻ āĻāĻ¤ā§āĻ¤āĻ° āĻĒā§āĻ°āĻā§āĻ¤āĻŋāĻ āĻŦāĻŋāĻ¨āĻŋāĻŽā§ āĻāĻ°āĻžāĻ° āĻāĻ¨ā§āĻ¯ āĻāĻāĻŋ āĻŦā§āĻ¯āĻŦāĻšā§āĻ¤ āĻšā§āĨ¤ āĻĄāĻžāĻāĻ°ā§āĻā§āĻ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ°ā§āĻļāĻ¨ āĻĢāĻžāĻ¯āĻŧāĻžāĻ°āĻāĻ¯āĻŧāĻžāĻ˛ā§ āĻ
āĻžāĻ°ā§ āĻ¸āĻ°āĻžāĻ¸āĻžāĻ°āĻŋ āĻ
ā§āĻ¯āĻžāĻā§āĻ¸ā§āĻ¸ āĻĻā§āĻ¯āĻŧāĨ¤ āĻāĻ āĻŦāĻŋāĻāĻ˛ā§āĻĒā§āĻ° āĻā§āĻˇā§āĻ¤ā§āĻ°ā§ āĻŦā§āĻ¯āĻŦāĻšāĻžāĻ°āĻāĻžāĻ°ā§āĻā§ āĻĒā§āĻ°āĻžāĻĨāĻŽāĻŋāĻ iptables āĻāĻ¨āĻ¸ā§āĻĒā§āĻ, āĻ
āĻ°ā§āĻĨāĻžā§ āĻ¸āĻžāĻ°āĻŖā§, āĻā§āĻ¨, āĻāĻŽā§āĻ¯āĻžāĻ¨ā§āĻĄ, āĻĒā§āĻ¯āĻžāĻ°āĻžāĻŽāĻŋāĻāĻžāĻ° āĻāĻŦāĻ āĻāĻžāĻ°ā§āĻā§āĻ āĻāĻžāĻ¨āĻ¤ā§ āĻšāĻŦā§āĨ¤ āĻ
āĻ¨ā§āĻ¯āĻžāĻ¨ā§āĻ¯ firewalld āĻŦā§āĻļāĻŋāĻˇā§āĻā§āĻ¯ āĻŦā§āĻ¯āĻŦāĻšāĻžāĻ° āĻāĻ°āĻž āĻ¸āĻŽā§āĻāĻŦ āĻ¨āĻž āĻšāĻ˛ā§, āĻļā§āĻ§ā§āĻŽāĻžāĻ¤ā§āĻ° āĻ¤āĻāĻ¨āĻ āĻļā§āĻˇ āĻŽāĻžāĻ§ā§āĻ¯āĻŽ āĻšāĻŋāĻ¸āĻžāĻŦā§ āĻĄāĻžāĻāĻ°ā§āĻā§āĻ āĻāĻ¨āĻĢāĻŋāĻāĻžāĻ°ā§āĻļāĻ¨ āĻŦā§āĻ¯āĻŦāĻšāĻžāĻ° āĻāĻ°āĻž āĻšāĻŦā§āĨ¤ āĻĒā§āĻ°āĻ¤ā§āĻ¯ā§āĻ āĻŦāĻŋāĻāĻ˛ā§āĻĒā§āĻ° ipv āĻ
āĻžāĻ°ā§āĻā§āĻŽā§āĻ¨ā§āĻ ipv4 āĻŦāĻž ipv6 āĻŦāĻž eb āĻšāĻ¤ā§ āĻšāĻŦā§āĨ¤ ipv4 āĻāĻ° āĻā§āĻˇā§āĻ¤ā§āĻ°ā§ āĻāĻāĻŋ āĻšāĻŦā§ iptables, ipv6 āĻāĻ° āĻā§āĻˇā§āĻ¤ā§āĻ°ā§ ip6tables āĻāĻŦāĻ eb āĻāĻ° āĻā§āĻˇā§āĻ¤ā§āĻ°ā§ āĻāĻĨāĻžāĻ°āĻ¨ā§āĻ āĻŦā§āĻ°āĻŋāĻ (ebtables)āĨ¤ āĻ˛āĻāĻĄāĻžāĻāĻ¨ āĻŦā§āĻļāĻŋāĻˇā§āĻā§āĻ¯ firewalld āĻāĻ° āĻāĻ¨ā§āĻ¯ āĻŦā§āĻ¯āĻŦāĻšāĻžāĻ°āĻāĻžāĻ°ā§ āĻāĻŦāĻ āĻ
ā§āĻ¯āĻžāĻĒā§āĻ˛āĻŋāĻā§āĻļāĻ¨ āĻ¨ā§āĻ¤āĻŋāĻ° āĻāĻāĻāĻŋ āĻā§āĻˇā§āĻĻā§āĻ° āĻ¸āĻāĻ¸ā§āĻāĻ°āĻŖāĨ¤ āĻāĻāĻŋ āĻĢāĻžāĻ¯āĻŧāĻžāĻ°āĻāĻ¯āĻŧāĻžāĻ˛ā§āĻ° āĻĒāĻ°āĻŋāĻŦāĻ°ā§āĻ¤āĻ¨āĻā§āĻ˛āĻŋāĻā§ āĻ¸ā§āĻŽāĻžāĻŦāĻĻā§āĻ§ āĻāĻ°ā§āĨ¤ āĻ˛āĻāĻĄāĻžāĻāĻ¨ āĻšā§āĻ¯āĻŧāĻžāĻāĻāĻ˛āĻŋāĻ¸ā§āĻā§āĻ° āĻŽāĻ§ā§āĻ¯ā§ āĻāĻŽā§āĻ¯āĻžāĻ¨ā§āĻĄ, āĻāĻ¨āĻā§āĻā§āĻ¸, āĻŦā§āĻ¯āĻŦāĻšāĻžāĻ°āĻāĻžāĻ°ā§ āĻāĻŦāĻ āĻŦā§āĻ¯āĻŦāĻšāĻžāĻ°āĻāĻžāĻ°ā§ āĻ
āĻžāĻāĻĄāĻŋ āĻĨāĻžāĻāĻ¤ā§ āĻĒāĻžāĻ°ā§āĨ¤ passthrough āĻ¨āĻŋāĻ¯āĻŧāĻŽ āĻĢāĻžāĻ¯āĻŧāĻžāĻ°āĻāĻ¯āĻŧāĻžāĻ˛ āĻĻāĻŋāĻ¯āĻŧā§ āĻ¸āĻ°āĻžāĻ¸āĻžāĻ°āĻŋ āĻāĻžāĻ˛āĻ¨āĻž āĻāĻ°āĻž āĻšāĻ¯āĻŧ āĻāĻŦāĻ āĻŦāĻŋāĻļā§āĻˇ āĻā§āĻ¨ā§ āĻ°āĻžāĻāĻž āĻšāĻ¯āĻŧ āĻ¨āĻžāĨ¤ āĻ¸āĻāĻ˛ iptables, ip6tables āĻāĻŦāĻ ebtables āĻŦāĻŋāĻāĻ˛ā§āĻĒ āĻŦā§āĻ¯āĻŦāĻšāĻžāĻ° āĻāĻ°āĻž āĻ¯ā§āĻ¤ā§ āĻĒāĻžāĻ°ā§āĨ¤ āĻ
āĻā§āĻ°āĻžāĻ§āĻŋāĻāĻžāĻ° āĻ¨āĻŋāĻ¯āĻŧāĻŽ āĻ
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