How do I disable source routing?
Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> “MSS: (DisableIPSourceRouting) IP source routing protection level (protects against packet spoofing)” to “Highest protection, source routing is completely disabled”.
What is source-routed traffic and why is it a threat?
Normally, the route a packet takes from its source to its destination is determined by the routers between the source and destination. The packet itself only says where it wants to go (the destination address), and nothing about how it expects to get there.
What is source-routed traffic?
Source-routed packets allow a packet’s sender to specify which route it should take to its destination. An attacker might be able to use this capability to trick the client into communicating with the wrong system. Source-routed packets are rarely used for legitimate communication.
What is strict source routing and loose source routing?
Strict source routing lets a manager specify the path through all the routers to the destination. Return responses use the same path in reverse. Loose source routing lets managers specify an address that the packet must pass through on its way to the destination.
Is source routing disabled on the router?
–> Cisco routers normally accept and process source routes. Unless a network depends on it, source routing should be disabled. –> Attackers can use source routing to probe the network by forcing packets into specific parts of the network.
How do I disable IP routing in Windows 10?
Press Windows and R keys together to open the Run box, and enter regedit to open the Registry Editor. Set the value of IPEnableRouter under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters to 0. If the value is set to 0, IP forwarding will be disabled.
What is source routed packet?
A source-routed packet specifies the exact router path for the packet. The packet specifies the path by listing the IP addresses of the router interfaces through which the packet must pass on its way to the destination.
How do you implement source routing?
To use source routing, a device must use the API mode, and it must send periodic many-to-one route request broadcasts (AR command) to create a many-to-one route to it on all devices. When remote devices send RF data using a many-to-one route, they first send a route record transmission.
What are source routed packets?
How does source routing work?
Source routing is a specific routing process where senders can specify the route that data packets take through a network. This allows for troubleshooting and various transmission goals. Source routing is an alternative to traditional routing where packets just move through a network based on their destination.
How Strict Source Route is different from loose source route?
There are two different types of source routing – loose and strict. In loose source routing, the packet has to pass through specific listed hops, but in strict source routing, the sender specifies every step on a hop-by-hop basis.
What is the benefit of strict source route option of IP header?
Strict Source Routing allows an originating system to list the specific routers that a datagram must visit on the way to its destination. No deviation from this list is allowed.
How to disable IP source-routing on a router?
To disable IP source-routing on a router, issue the no ip source-route global configuration command: Enter configuration commands, one per line. End with CNTL/Z. TIP See RFC 1122 for the details of IP source routing. Was this article helpful?
Can I enable or disable strict or Loose Source Routing separately?
You cannot enable or disable strict or loose source routing separately. To disable forwarding of IP source-routed packets, enter the no ip source-route command. To re-enable forwarding of source-routed packets, enter the ip source-route command.
What is a source-routed packet?
A source-routed packet specifies the exact router path for the packet. The packet specifies the path by listing the IP addresses of the router interfaces through which the packet must pass on its way to the destination. The Layer 3 switch supports both types of IP source routing:
Should I disable source routing for high security environments?
Microsoft recommends configuring this setting to Not Defined for enterprise environments and to Highest Protection for high-security environments to completely disable source routing. An attacker could use source routed packets to obscure their identity and location.