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Good Afternoon - During a recent test, our auditors picked up the fact the ICMP timestamp requests and ICMP timestamp replies (categories 13 and 14) should be blocked or filtered out on our Tasman 1004 router (now Nortel). &nbsp;He was unable to give me any specifics on how to do this since he is not familiar with this type of router. &nbsp;And unfortunately, I am unable to get any sort of help from Nortel support. &nbsp; The auditor did say that oftertimes routers don't have the ability to shut off specific ICMP categories and the router software has it all bundles under the ICMP heading. &nbsp;Does anybody out there know of the command that will shut off ICMP or the specific categories on this router? &nbsp;I have downloaded the command guide but really couldn't figure out a lot of it. &nbsp;Also, the auditor said depending on the router, that will also disable ping and traceroute. &nbsp;Is this also the case? &nbsp;Thanks so much in advance.
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Good Afternoon - During a recent test, our auditors picked up the fact the ICMP timestamp requests and ICMP timestamp replies (categories 13 and 14) should be blocked or filtered out on our Tasman 1004 router (now Nortel).  He was unable to give me any specifics on how to do this since he is not familiar with this type of router.  And unfortunately, I am unable to get any sort of help from Nortel support.   The auditor did say that oftertimes routers don't have the ability to shut off specific ICMP categories and the router software has it all bundles under the ICMP heading.  Does anybody out there know of the command that will shut off ICMP or the specific categories on this router?  I have downloaded the command guide but really couldn't figure out a lot of it.  Also, the auditor said depending on the router, that will also disable ping and traceroute.  Is this also the case?  Thanks so much in advance.

ICMP filters on Tasman (Nortel) 1004 Router

Good Afternoon - During a recent test, our auditors picked up the fact the ICMP timestamp requests and ICMP timestamp replies (categories 13 and 14) should be blocked or filtered out on our Tasman 1004 router (now Nortel).  He was unable to give me any specifics on how to do this since he is not familiar with this type of router.  And unfortunately, I am unable to get any sort of help from Nortel support.   The auditor did say that oftertimes routers don&#39;t have the ability to shut off specific ICMP categories and the router software has it all bundles under the ICMP heading.  Does anybody out there know of the command that will shut off ICMP or the specific categories on this router?  I have downloaded the command guide but really couldn&#39;t figure out a lot of it.  Also, the auditor said depending on the router, that will also disable ping and traceroute.  Is this also the case?  Thanks so much in advance.

Networking software modules are interfaced with a framework implemented on the machine's operating system that implements the networking functionality of the operating system. The best known frameworks are the TCP/IP model and the OSI model. Systems typically do not use a single protocol to handle a transmission. Instead they use a set of cooperating protocols, sometimes called a protocol family or protocol suite.[9] Some of the best known protocol suites include: IPX/SPX, X.25, AX.25, AppleTalk and TCP/IP. Other protocols indirectly related to networking include the hypertext transfer protocol (HTTP) and its related technologies, Dynamic Host Configuration Protocol (DHCP), Domain Name Server (DNS) and other Internet protocols.

Networking Protocols

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.