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Can't connect to anything hosted by my friend anymore


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31 replies to this topic

#1 Sniper_x002

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Posted 09 August 2017 - 07:27 AM

I know, this sounds like the solution would be pretty easy/simple. I used to be able to connect to my friend (e.g. he could host an ArmA 3 server and I could join it) but for some reason I can't anymore.

 

Here is a list of things I've already tried doing (but if you think I may have done something wrong, please give any suggestions. We're half desperate)

  • netsh winsock reset
  • Switch to google DNS
  • Turn Windows firewall off
  • Check my router for anything that might block connection (note: no settings were changed from before I could connect and afterward)
  • Ping his IP (I've tried this on multiple PCs, and phones. I also tried this on public networks, but either the requests time out or it says destination host unreachable. Not sure if this is related or not)
  • Restarting my PC (this was a tough one)
  • ipconfig /flushdns
  • more maybe

Anything he hosts I cannot connect to, including games and a TS3 server. We can still chat through Steam, since that doesn't directly connect us to each other, but our networks cannot see each other. I'll also mention that we both have the same ISP, and the fact that others can join his servers but not I.

I'm tired so hopefully I didn't forget anything, if you need any more info please ask.

 

Attempting to traceroute (tracert) to his IP (Paraphrasing, leaving out IPs)

Tracing route to {his IP} over a maximum of 30 hops

  1     2 ms     6 ms     2 ms  {my router not IP} [192.168.1.1]
  2  {my IP}  reports: Destination host unreachable.

Trace complete.

Edited by Sniper_x002, 09 August 2017 - 06:07 PM.


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#2 toofarnorth

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Posted 09 August 2017 - 08:45 AM

Hello

 

Question 1:
Are you and your friend on the same internal network?
By that i mean you are both in the same house/building and connect to the same router

tfn



#3 Sniper_x002

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Posted 09 August 2017 - 08:54 AM

Hello

 

Question 1:
Are you and your friend on the same internal network?
By that i mean you are both in the same house/building and connect to the same router

tfn

No. We share the same ISP, but we don't use the same network (He doesn't live directly near me). I'm not trying to connect via ipv4 addresses.



#4 Wand3r3r

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Posted 09 August 2017 - 09:57 AM

It would appear you have the wrong wan ip address for your friend or you are not running ipv6 since your tracert comes up using a ipv4 ip but you say you aren't trying to connect to a ipv4 ip

#5 Sniper_x002

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Posted 09 August 2017 - 10:15 AM

It would appear you have the wrong wan ip address for your friend or you are not running ipv6 since your tracert comes up using a ipv4 ip but you say you aren't trying to connect to a ipv4 ip

Well, I don't think I have the wrong WAN IP for him because A: others can join him with the same IP, and B: Steam can see that he is playing a game, and I have the option to directly join him (Once in game though, I get a timeout message)

 

As for not running ipv6, can you elaborate on that? Tracert will show my ipv4 address either way since that's where the tracing start, at least as far as I know. The two IPs I censored are mine and his public IPs.

 

Thanks for the replies so far though.


Edited by Sniper_x002, 09 August 2017 - 10:15 AM.


#6 Wand3r3r

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Posted 09 August 2017 - 01:42 PM

you wrote: "I'm not trying to connect via ipv4 addresses"

since you can only connect via ipv6, if not using ipv4, I took it to mean you were using ipv6 exclusively.
also if running ipv6 locally your tracert would have show that but it didn't.


◾Ping his IP (I've tried this on multiple PCs, and phones. I also tried this on public networks

What exactly do you mean by this? Were all the pcs and phones using your internet connection?

#7 Sniper_x002

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Posted 09 August 2017 - 05:59 PM

you wrote: "I'm not trying to connect via ipv4 addresses"

since you can only connect via ipv6, if not using ipv4, I took it to mean you were using ipv6 exclusively.
also if running ipv6 locally your tracert would have show that but it didn't.
 

 What I meant by this is that my friend didn't give me an IPv4 IP which obviously would not have worked.

 

 

◾Ping his IP (I've tried this on multiple PCs, and phones. I also tried this on public networks

What exactly do you mean by this? Were all the pcs and phones using your internet connection?

I'm unsure if this one is related or not. Not all of the PCs and phones were on the same network. I tried some on my own network, and others on some public networks , and some other private ones too. I think this is the response I always got (below), which is why I'm unsure if it's related. (I don't think it may be related because still, others can join his server)

Pinging {His Ipv6 address} with 32 bytes of data:
Reply from {My ipv6 address}: Destination host unreachable.
Reply from {My ipv6 address}: Destination host unreachable.
Reply from {My ipv6 address}: Destination host unreachable.
Reply from {My ipv6 address}: Destination host unreachable.

Ping statistics for {His Ipv6 address}:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Edited by Sniper_x002, 09 August 2017 - 06:00 PM.


#8 toofarnorth

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Posted 10 August 2017 - 01:53 AM

Question 2:

Could you do a traceroute to google.com and post the results?

This is to help understand how traffic flows from you out on the internet.

 

 

tfn



#9 Sniper_x002

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Posted 10 August 2017 - 02:28 AM

Question 2:

Could you do a traceroute to google.com and post the results?

This is to help understand how traffic flows from you out on the internet.

 

 

tfn

Tracing route to google.com [172.217.25.110]
over a maximum of 30 hops:

  1     2 ms     1 ms     1 ms  LINKSYS20079 [192.168.1.1]
  2    13 ms    19 ms    19 ms  10.107.0.1
  3    14 ms    19 ms    23 ms  65.99.95.42
  4     *        *        *     Request timed out.
  5    32 ms    39 ms    43 ms  125.29.30.105
  6    38 ms    84 ms    34 ms  113.157.227.17
  7    41 ms    41 ms    46 ms  27.85.130.89
  8    48 ms    51 ms    53 ms  27.85.227.157
  9    46 ms    58 ms    44 ms  27.85.229.182
 10    40 ms    63 ms    55 ms  209.85.173.61
 11    51 ms    53 ms    58 ms  108.170.242.161
 12    58 ms    51 ms    63 ms  108.170.233.83
 13    50 ms    43 ms    44 ms  nrt13s51-in-f14.1e100.net [172.217.25.110]


#10 Wand3r3r

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Posted 10 August 2017 - 09:18 AM

clear your arp cache/table

http://www.tech-faq.com/clear-arp-cache.html

review your hosts file and antimalware software that there are no entries either by ip address or host name for the game server you can't reach

Edited by Wand3r3r, 10 August 2017 - 09:19 AM.


#11 toofarnorth

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Posted 10 August 2017 - 10:02 AM

Tracing route to google.com [172.217.25.110]
over a maximum of 30 hops:

  1     2 ms     1 ms     1 ms  LINKSYS20079 [192.168.1.1]
  2    13 ms    19 ms    19 ms  10.107.0.1
  3    14 ms    19 ms    23 ms  65.99.95.42
  4     *        *        *     Request timed out.
  5    32 ms    39 ms    43 ms  125.29.30.105
 

Thank you

Jump number 2 tells me that your ISP is using Carrier Grade NAT because of lack of IPV4 addresses.
This should however not affect IPV6 operation.

Could you do a traceroute to 2a00:1450:400e:800::2003 ?
(This is google.co.jp in case you were wondering)

And finally a traceroute to the ip of your friend
You can edit out the full ip and cut the result after a few jumps

This is to see how the IPV6 traffic flows

tfn



#12 arlattimor

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Posted 10 August 2017 - 11:35 AM

I would use an app I use often visualroute to find which router is failing. Either the router is down, ICMP is turned off. or his ISP maybe blocking him. Strange need more info.


A. Lattimore

CCNA, CWNA, MCITP, MCSA, MCT, MCP, Security+, Server+, Linux+, Network+, A+, CNST

Network Security Engineer

 


#13 arlattimor

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Posted 10 August 2017 - 11:36 AM

Definitely, use visualroute, need a little more information.


A. Lattimore

CCNA, CWNA, MCITP, MCSA, MCT, MCP, Security+, Server+, Linux+, Network+, A+, CNST

Network Security Engineer

 


#14 Sniper_x002

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Posted 10 August 2017 - 05:44 PM

Thank you

Jump number 2 tells me that your ISP is using Carrier Grade NAT because of lack of IPV4 addresses.
This should however not affect IPV6 operation.

Could you do a traceroute to 2a00:1450:400e:800::2003 ?
(This is google.co.jp in case you were wondering)

And finally a traceroute to the ip of your friend
You can edit out the full ip and cut the result after a few jumps

This is to see how the IPV6 traffic flows

tfn

 

For tracerout to google.jp

Tracing route to ams15s21-in-x03.1e100.net [2a00:1450:400e:800::2003]
over a maximum of 30 hops:

  1     *      287 ms   278 ms  6to4.ams1.he.net [2001:470:0:190::2]
  2     *      341 ms   293 ms  10gigabitethernet9.switch2.ams1.he.net [2001:470:0:190::1]
  3   293 ms   284 ms     *     amsix-router.google.com [2001:7f8:1::a501:5169:1]
  4   285 ms   288 ms     *     2001:4860:0:f8a::1
  5   294 ms   286 ms   287 ms  2001:4860:0:1::155f
  6   287 ms     *        *     ams15s21-in-x03.1e100.net [2a00:1450:400e:800::2003]
  7   289 ms     *      290 ms  ams15s21-in-x03.1e100.net [2a00:1450:400e:800::2003]

As for tracing to my friends IP, check the OP. Unless you wanted me to do it again.

I would use an app I use often visualroute to find which router is failing. Either the router is down, ICMP is turned off. or his ISP maybe blocking him. Strange need more info.

I'll look at this, thanks.



#15 toofarnorth

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Posted 10 August 2017 - 06:00 PM

As for tracing to my friends IP, check the OP. Unless you wanted me to do it again. 

It would be nice if I could see part of the IPV6 address ;)

tfn






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