Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Tracert Question

Posted on 2004-10-20
4
Medium Priority
?
353 Views
Last Modified: 2008-03-06
1     1 ms     1 ms     1 ms  192.168.0.1 (My router's internal ip address)
2    11 ms     7 ms     7 ms  10.43.0.1 (?????)
3     6 ms     7 ms    12 ms  srp3-0.dytnoh1-rtr2.woh.rr.com [24.29.160.34]
4    16 ms    16 ms    15 ms  son0-0-3.ncntoh1-rtr0.neo.rr.com [65.25.128.253]
etc...

The above traceroute snippet shows that on the 2'nd hop the gateway there has an internal ip address. This address is _not_ part of my LAN. I've tried port scanning the box and had no responses. Tried all ICMP type packets and have only gotten the address to respond to a traceroute technique.. by setting the TTL for exactly '2'. What I get back is a TTL time exceeded in transit packet (which is the common expected response). This is the only response I've been able to get from this machine. My question is... if this machine is not part of my LAN and it doesn't have a valid ip address that can be accessed from the WAN.. how am I seeing it @ the 2'nd hop? I was using the standard ICMP traceroute when I noticed this... I wasn't using UDP mode.
0
Comment
Question by:alloc
4 Comments
 
LVL 2

Assisted Solution

by:Giacobe
Giacobe earned 800 total points
ID: 12363352
It's either your cable modem or the cable modem aggregator at the cable company's headend.

It likely won't respond to you except in maybe a ping or tracert.  It's likely locked down on every other port.
0
 
LVL 5

Expert Comment

by:scrmcna
ID: 12363362
Does your router connect directly to your internet line?  What kind of router is it?
0
 
LVL 79

Accepted Solution

by:
lrmoore earned 800 total points
ID: 12363541
Since you are on cable, Giacobe is correct. It is either the cable modem itself (most are 192.168.100.1), or the aggregator upstream. These may ID themselves with private IP's because they have a loopback address assigned in private IP space for the technicians to manage them. Usually  locked down to port scans.
If you want a real exciting traceroute, get one of the routers in the middle to create a loopback address with 127.0.0.1..

0
 

Author Comment

by:alloc
ID: 12363720
thanks guys :)
0

Featured Post

[Webinar] Cloud and Mobile-First Strategy

Maybe you’ve fully adopted the cloud since the beginning. Or maybe you started with on-prem resources but are pursuing a “cloud and mobile first” strategy. Getting to that end state has its challenges. Discover how to build out a 100% cloud and mobile IT strategy in this webinar.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This month, Experts Exchange’s free Course of the Month is focused on CompTIA IT Fundamentals.
In this article, the configuration steps in Zabbix to monitor devices via SNMP will be discussed with some real examples on Cisco Router/Switch, Catalyst Switch, NAS Synology device.
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…
Monitoring a network: why having a policy is the best policy? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the enormous benefits of having a policy-based approach when monitoring medium and large networks. Software utilized in this v…

972 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question