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How Strict Source Route is different from loose source route?
Source routing can be strict or loose. Strict source routing lets a manager specify the path through all the routers to the destination. Loose source routing lets managers specify an address that the packet must pass through on its way to the destination.
What is a source routing attack?
To find the route that packets take through your network, attackers use IP source route attacks. The attacker sends an IP packet and uses the response from your network to get information about the operating system of the target computer or network device.
What is source address route?
In computer networking, source routing, also called path addressing, allows a sender of a packet to partially or completely specify the route the packet takes through the network. In contrast, in conventional routing, routers in the network determine the path incrementally based on the packet’s destination.
How do you prevent 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 strict source route?
Strict Source Routing allows an originating system to list the specific routers that a datagram must visit on the way to its destination. In order to facilitate this process, the Strict Source Route option uses an 8-bit pointer field that is placed at the beginning of the option-data field.
What is record route?
The record route option provides a means to record the route of an Internet datagram. If it is, it inserts its own Internet address as known in the environment into which this datagram is being forwarded into the recorded route beginning at the byte indicated by the pointer, and increments the pointer by four.
What does no IP source route mean?
“ip source-route” does NOT mean that you are routing by the source address. The clue is in the name “source-route” as per earlier comments (13 YEARS AGO) means that the routing is determined by the source DEVICE i.e. the sender of the packet. It has nothing to do with the IP address of the sender.
Is source routing disabled on the router?
(Source routing is an IP option that allows the packet to specify the route it should take to its destination.) Source routing is a potential security problem, so it is best to disable this feature unless required.
What is loose routing in SIP?
Loose Routing – A proxy is said to be loose routing if it follows the procedures defined in RFC 3261 for processing of the Route header field. That rule caused proxies to destroy the contents of the Request-URI when a Route header field was present.
What is the difference between route and record route SIP?
The difference is how we set the R-URI and Route header list. If any of Proxies on the path want to process also subsequent messages, they insert a Record-Route header. For a new request the Record-Route values will be interested as Route header fields.
What does strict source and record route do?
The strict source and record route (SSRR) option provides a means for the source of an internet datagram to supply routing information to be used by the gateways in forwarding the datagram to the destination, and to record the route information.
When to use source routing and logical addressing?
When using source routing, that byte indicates a particular port of that crossbar; when that port becomes available, the router discards that routing byte and sends the rest of the packet out that port. Each packet traveling through a SpaceWire network can use path addressing (source routing) or logical addressing or some combination.
Why is IP option 9 a strict source route?
This option is a strict source route because the gateway or host IP must send the datagram directly to the next address in the source route through only the directly connected network indicated in the next address to reach the next gateway or host specified in the route. Must be copied on fragmentation. Appears at most once in a datagram.
Why are packets marked LSRR blocked on the Internet?
Because of security concerns, packets marked LSRR are frequently blocked on the Internet. If not blocked, LSRR can allow an attacker to spoof an address but still successfully receive response packets by forcing return traffic for spoofed packets to return through the attacker’s device. In IPv6, two forms of source routing have been developed.