What is Cisco IP source route?
Source routing is a feature of IP, whereby individual packets can specify routes. This feature is used in several different network attacks by bypassing perimeter and internal defense mechanisms.
What is firewall source routing?
Source routing options can be used to get information about all the routers a packet transits. This could potentially be used to bypass firewalls and hence is a security threat. For example: Network A has firewall configured correctly but allows traffic from network B which has no firewall configured.
How do I disable IP routing on my router?
To enable IP routing, use the ip routing command in switch configuration mode. To disable IP routing, use the no form of this command. This command has no arguments or keywords.
How do I disable IP forwarding on a Cisco router?
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.
How does IP source routing work?
Source routing is a feature of the IP protocol which allows the sender of a packet to specify which route the packet should take on the way to its destination (and on the way back). Source routing was originally designed to be used when a host did not have proper default routes in its routing table.
What is a source 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. Source routing allows easier troubleshooting, improved traceroute, and enables a node to discover all the possible routes to a host.
Should I disable source routing?
(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.
How does source routing work?
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 do source-based routing?
How to Configure Source-Based Routes
- Create a Source-based Route. Go to CONFIGURATION > Configuration Tree > Box > Network. In the left menu, click Advanced Routing.
- Activate the Network Configuration. After you have configured the network route, you must execute your new network configurations. Go to CONTROL > Box.
How do I disable routing on my Cisco router?
To enable IP routing, use the ip routing command in switch configuration mode. To disable IP routing, use the no form of this command. This command has no arguments or keywords. IP routing is disabled.
What is source routing in a Cisco router?
Cisco routers normally accept and process source routes. Unless a network depends on it, source routing should be disabled. Source routing is a technique whereby the sender of a packet can specify the route that a packet should take through the network.
How do I disable IP source routing on a router?
To disable IP source-routing on a router, issue the no ip source-route global configuration command: RTA#conf t. Enter configuration commands, one per line. End with CNTL/Z. RTA(config)#no ip source route. TIP See RFC 1122 for the details of IP source routing.
Is IP source routing available with Cisco extended ping/traceroute options?
” I’ve used IP source routing on multiple (rare) occasions using Cisco extended ping/traceroute options (I think it’s available in both, but don’t have, at the moment, a box to check against.) Can be of benefit investigating certain network performance issues.
What is source routing and why is it disabled?
In source routing, the “source” (i.e., the sender) makes some or all of these decisions. Reason for disabling: Attackers can use source routing to probe the network by forcing packets into specific parts of the network.
