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Questions tagged [traceroute]

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Why the packet loss of ping and traceroute is different

I have an IP address on 12th hop. When I send an icmp request packet with TTL 11 to this IP, the packet loss at the 11th hop is 0%. However, if I ping the IP address of the 11th hop, or use TTL 11 to build my icmp request packet to trace the 11th…
ggggggggggEEE
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First traceroute hop always slow. Why?

Browsers in my LAN, no matter the device, are always slow to connect to internet servers, but after the connection is made webpages download rather fast. Speedtest.net reports what I would call a rather fast internet connection speed. Namebench says…
elmimmo
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Adding a hop using `ip route add` makes traceroute stop at the first hop

I am practising for LFCS. I have two virtual machines, ubuntu 18.04 both. On machine1, when i run traceroute 8.8.8.8 I have a normal output. When on machine1 I run sudo ip route add 8.8.0.0/16 proto static metric 10 via inet if-of-machine2 dev…
Vasiliki
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Traceroute to check NTP - possible?

In the past I mostly used tcptraceroute to check http and ssh. Now I need to check if my host can reach the NTP server. Is this possible at all? I have two machines. At application level I see: Machine qual can't reach the ntp server, and machine…
guettli
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Latency jumps in first, middle and last mile of path

I work for SD-WAN company providing an all in one solution edge router(Like FORTINET but not FORTINET). We have one customer in particular that has such a hard time with our services i.e. gift card servers unreachable, credit card processor…
Ixanthylus
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TTL Changes During Continuous Ping

We use Viasat and have the modem plugged directly into a linux based load balancer. I SSH'ed into the loadbalancer using putty and pinged google When I pinged google this is the result: - PING 8.8.8.8 (8.8.8.8) from x.x.x.x : 64(92) bytes of…
Ixanthylus
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Connection timout between two IP troubleshooting

I have a client with a webserver and a VPS server with a webserver and a mailserver. These machines have to exchange data via REST API but I have a problem, they are not reachable each other over HTTP and HTTPS in both ways. I did some…
Tobia
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website hosted in aws ec2 is not loading

I have a website hosted in aws ec2 which stopped loading since few days onwards no clue whatsoever, below the output of traceroute please help Tracing route to 126news.com [18.221.68.117] over a maximum of 30 hops: 1 3 ms 3 ms 1 ms …
Naga
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Some IP addresses are unreachable due to invalid route

I want to connect to remote machines. The problem is that I can connect to every machine except one. After some invertigation I found that problem is in route. Here is example: PS C:\Users\Alex> tracert 172.17.56.66 Tracing route to 172.17.56.66…
Alex Zhukovskiy
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Traceroute not returning result whereas ssh is working fine

Maybe it's a dumb question, so please bear with me as I am novice to networking. While trying to debug a connection problem to a server today I observed the following two things - I am able to ssh (port 22) on the target server successfully However,…
Shibasis Sengupta
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Ping request timeout, followed by >10s times from laptop, but not from router

Using my router's built-in Ping diagnostic, I can ping sites and get times <100ms routinely. Using my laptop, or any other device, wired or wireless, I first receive a bunch of Request Timeout messages, followed by times that are crazy slow. From…
iopener
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SSH doesnt work with both ends connected to VPN

I have an Arch Linux SSH/SFTP server connected to a PrivateInternetAccess VPN which I want to ssh into from an android phone. The problem is, if the phone is also connected to a PIA VPN, SSH hangs and cannnot connect to my server. If I disconnect…
florosus
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Static route with local IP does not route locally

VPN client breaks routing table on Server by routing local IP to VPN subnetwork. I can't change anything in VPN client so I'm trying to restore route to my host so that apps using 192.168.1.2 as localhost address was able to communicate each other…
Zur13
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Why would tracert command in Windows timeout except for last hop?

On my Windows 10 system on company network any time I attempt to run a basic tracert command to an internal or external resource (e.g. google.com) each identified hop results in "Request timed out" except for the final hop to destination. What could…
abigbyte
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Traceroute an IP address with apache tomcat

Is it possible to get the traceroute from an incoming http request in tomcat? What I would like to get is a list of all routing points that a http request took. Is that somehow technically possible or with some other http server?
Tom Tom
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