icmp Questions
2
I set up 3 CentOS servers, configured server2 as router between 192.168.1.0/24 and 30.0.0.0/24, but ping can't get through.
I tried ping 192.168.1.62 from server1, according to tcpdump on se...
Brunei asked 30/8, 2013 at 15:42
2
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The Ping command uses an ICMP request as far as I know
So is it possible to send a short text with the ping command right from commandline?
1
I have an application that pings a bunch of servers. It runs great for days, but suddenly will have many failures of one of two types:
WSA_QOS_ADMISSION_FAILURE (11010) "A QoS error occurred due t...
Winfield asked 29/4, 2014 at 20:32
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I am new to socket programming
I saw a ICMP request program , in that they used setsockopt to a socket
int on = 1;
setsockopt(s, IPPROTO_IP, IP_HDRINCL, &on, sizeof(on))
but even if I do ...
Gwenore asked 1/3, 2014 at 16:19
2
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Is it possible to use ICMP sockets under the IP protocol? Maybe something like:
socket(PF_INET, <type>, IPPROTO_ICMP)?
What should I put in the <type> field? I saw some examples using S...
2
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Is it possible to use ICMP sockets under the IP protocol? Maybe something like:
socket(PF_INET, <type>, IPPROTO_ICMP)?
What should I put in the <type> field? I saw some examples using S...
2
I was going through a video lecture on networking and there the lecturer mentions ICMP as a transport layer protocol. However, Googling it shows various forums describing it as network layer protoc...
Volturno asked 7/10, 2013 at 6:48
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3
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I have an interesting situation on my hands, and I'm not quite sure how to go about troubleshooting it. I did a few searches for something similar to my situation, but nothing quite matches it. If ...
Feldt asked 20/2, 2012 at 20:53
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I am trying to implement traceroute using icmp raw sockets by constructing the appropriate ip header and icmp header.The port number i am using is 7 and i have calculated the checksums.The hop limi...
0
I'm using a single raw socket to read UDP packets from local test network with 1024 ports. Each UDP src and dest port is unique and I need access to IP and UDP header fields. I can stream and proce...
Gay asked 20/2, 2013 at 18:32
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If IPv4 is in question and I want to extract IP and ICMP header out of std::istream, first I get the initial 20 bytes, then check if the header lenght provided in the IPv4 header is larger than 20 ...
Cutpurse asked 7/2, 2013 at 22:23
1
Goal:
I need to be able to ping a network switch to determine whether or not it is available. This is meant to tell the user that either the network cabling is unplugged, the network switch is una...
2
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1
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according to
http://kernelnewbies.org/Linux_3.0#head-c5bcc118ee946645132a834a716ef0d7d05b282e
we can now ping as an unprivileged user, and I can sort of get it to work.
using https://github.com/je...
2
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Traceroute is an application to trace the path from A to B. (A is your location and B is the server you want to trace). In Windows, you can type tracert. The main algorithm is:
send UDP with TTL =...
Demagogue asked 11/11, 2012 at 6:42
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I'm using Scapy to replay some dumped packets in which I change the TTL value. I've been getting very odd results even with TTL=1.
When I run my test hours apart from each other, I can get from r...
1
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According to the Stevens (TCP/IP Illustrated) the traceroute program sends UDP packets to the destination host with an incremental TTL (1, 2, 3, etc) to get the intermediate hops info from the ICMP...
Glyptic asked 25/4, 2012 at 8:53
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I'm trying to create an ICMP ping test program in C but am having difficulties with successfully sending the packets. The sendto function returns the # of bytes and everything but no packets are ac...
1
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Can someone please explain why maximum legal size of ICMP echo packet is calculated as follows:
65535 - 20 - 8 = 65507
Thanks.
Biota asked 26/2, 2012 at 1:50
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I have a SIP application that needs to send UDP packets to set up the SIP calls. SIP has a timeout mechanism to cope with delivery failures. An additional thing I would like to be able to do is det...
1
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as you may know one is unable to create RAW sockets using Windows Sockets without having administrative priviliges. The problem is, that I need to send ICMP messages, thus I need RAW sockets. The P...
Blemish asked 7/10, 2011 at 12:41
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I need to perform ping to some ip/machine. The code may be executed on any kind of platform (windows, linux, mac) and i need to get the information about loss and the round trip time.
so java's exe...
Phail asked 30/5, 2011 at 13:57
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When I try to ping the broadcast address on my LAN, it shows ICMP replies from only 3 hosts, everytime, even though there many hosts connected to the LAN.
For the broadcast address, I did
$ifcon...
Cinereous asked 31/1, 2011 at 19:51
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Before saying anything let me tell you that i am not well educated int networks related subjects.
I am a software developer and I have written and exposed a Service on HTTPS at port 8000. Now i w...
Yakka asked 3/2, 2010 at 7:46
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