mirc port block !!!

soulidentities · 10-07-2006, 11:20 PM

Hi

I have searched many topic in this site to solve my problem but I could not make it.

May B now I can make any one understand my problem:idea:

I use mirc in my home. But recently I change my ISP. My new ISP is give me fast broadband speedy connection. But here I cant login mirc. By the same machine when I use my dialup I loged nicely. Then I discuss sum ppl why. Diff ppl ans me diff prob.

1.Some ppl tell me ur mirc port block.
2.Some one tell me software problem.
3.Some ppl tell me firewall problem.

Now how can I find whats the problem:rolleyes:

Everytime The error is "Unable to resolve server". Its a such kinda error that I cant assume anything.

Now If I diagonose the 3 problem which I have writen(1,2,3) then problem no. 2 is not possible.Bcoz I login by same soft through dialup. For problem no. 3, I dont use any firewall. But for problem no. 1 my ISP use firewall n so far I heard My ISP block maximum ports. But I m still confused how can I make sure about my problem then I will found solution.

Thanx anyway. May b my post Bcome a lil big for u but I want u to understand completely.

Thanx:smile:

Will.Spencer · 10-08-2006, 01:54 AM

Unable to Resolve Server is clearly a DNS issue.

What it is saying is "You are telling me a hostname, and I cannot find an IP address for that hostname."

The first question is, what hostname are you telling it?

Once you answer that question, then you should open up a CMD shell (Start -> Run -> CMD) and use the `nslookup` program to try to manually resolve that hostname. This may help you to discover what the DNS issue is.

Here is what I see when I try to do a manual DNS lookup on a hostname that does not exist:

Code:

C:\>nslookup irc.server.net
Server:  cns.cmc.co.denver.comcast.net
Address:  68.87.85.98

*** cns.cmc.co.denver.comcast.net can't find irc.server.net: Non-existent domain

What error messages do you see when you do a manual lookup on the hostname that you are using as your mIRC server?

soulidentities · 10-08-2006, 02:15 AM

Ya I have tried as u said but after lookup the msg is below,

C:\>nslookup irc.dal.net
*** Default servers are not available
Server: UnKnown
Address: 127.0.0.1

*** UnKnown can't find irc.dal.net: No response from server

Now what does this mean

Will.Spencer · 10-08-2006, 04:38 AM

"Default servers are not available" means that the problem is not with irc.dal.net, but is instead with the DNS settings on your PC.

You will need to go into your network configuration and either configure your network connection to obtain the DNS servers automatically via DHCP, or you will have to manually enter your DNS servers.

Almost every ISP on earth publishes their DNS servers via DHCP, so that is probably the way you should configure TCP/IP on that network connection.

soulidentities · 10-08-2006, 04:54 AM

Ya U r rite. But Still I cant login. Now the error msg of mirc is
"Unable to connect to server (No Route to Host)".

But now the nslookup shows:

Quote:

C:\>nslookup irc.dal.net
*** Can't find server name for address 172.16.1.12: Non-existent domain
*** Default servers are not available
Server: UnKnown
Address: 172.16.1.12

Non-authoritative answer:
Name: irc.dal.net
Addresses: 194.68.45.50, 208.99.193.130

Now what is the problem???

I think u r about to solve my prob.
Pls help me. Thanx

Will.Spencer · 10-08-2006, 07:34 AM

Quote:

Originally Posted by soulidentities

*** Can't find server name for address 172.16.1.12: Non-existent domain
*** Default servers are not available
Server: UnKnown
Address: 172.16.1.12

This is not a fatal error, but it does mean that someone at your ISP doesn't know what they are doing. They don't have their DNS servers listed in DNS. That's bad form.

Quote:

Originally Posted by soulidentities

Non-authoritative answer:
Name: irc.dal.net
Addresses: 194.68.45.50, 208.99.193.130

This is good. This means that DNS is working, at least as much as it needs to.

Quote:

Originally Posted by soulidentities

Now the error msg of mirc is "Unable to connect to server (No Route to Host)".

This points back to problems at your ISP.

You can often find out exactly where the problem is by using the `tracert` program (pronounced traceroute).

`tracert` sends packets from your PC to the destination and attempts to show you the network path between you and the destination.

Here's what I see when I traceroute the first IP address for irc.dal.net:

Code:

C:\>tracert 194.68.45.50

Tracing route to irc.dal.net [194.68.45.50]
over a maximum of 30 hops:

  1     4 ms     2 ms     2 ms  192.168.1.1
  2     *        *        *     Request timed out.
  3    26 ms     *       20 ms  68.86.105.105
  4    16 ms     *        9 ms  10g-9-1-ur02.englewood.co.denver.comcast.net [68.86.103.114]
  5    14 ms     *        *     10g-9-3-ar01.aurora.co.denver.comcast.net [68.86.103.45]
  6     9 ms     9 ms     9 ms  68.86.128.53
  7    11 ms    12 ms    11 ms  12.116.159.5
  8    42 ms    36 ms    35 ms  tbr1013801.dvmco.ip.att.net [12.123.207.138]
  9    39 ms    47 ms    35 ms  tbr2-cl31.sffca.ip.att.net [12.122.12.133]
 10    52 ms    33 ms    33 ms  ggr3-ge110.sffca.ip.att.net [12.122.82.169]
 11    36 ms    89 ms    35 ms  so1-3-0-2488M.ar1.SJC2.gblx.net [208.51.134.109] 
 12    87 ms    81 ms    81 ms  so5-0-0-2488M.ar2.NYC1.gblx.net [67.17.64.150]
 13    85 ms    80 ms    80 ms  69.31.29.242
 14   168 ms   177 ms   206 ms  0.tge1-1.ar1.mtl1.us.nlayer.net [69.22.142.110] 
 15    92 ms    94 ms   101 ms  mto.101.po1.ar1.mtl1.ca.nlayer.net [69.31.142.2] 
 16   417 ms    96 ms    95 ms  ge-0-0-0.core1.tor1.mtotelecom.net [64.254.224.7 0]
 17   115 ms   109 ms    97 ms  irc.dal.net [194.68.45.50]
Trace complete.

And here's what I see when I traceroute to the second IP address listed for irc.dal.net:

Code:

C:\>tracert 208.99.193.130

Tracing route to 208.99.193.130 over a maximum of 30 hops

  1     2 ms     1 ms     3 ms  192.168.1.1
  2     *        *        *     Request timed out.
  3     9 ms    24 ms     *     68.86.105.105
  4     *       28 ms    25 ms  10g-9-1-ur02.englewood.co.denver.comcast.net [68.86.103.114]
  5    22 ms    10 ms     *     10g-9-3-ar01.aurora.co.denver.comcast.net [68.86.103.45]
  6    14 ms    21 ms     9 ms  68.86.103.170
  7    14 ms    10 ms     9 ms  12.116.47.209
  8    41 ms    35 ms    36 ms  tbr1013801.dvmco.ip.att.net [12.123.207.138]
  9    39 ms    35 ms    33 ms  tbr2-cl31.sffca.ip.att.net [12.122.12.133]
 10    61 ms    47 ms    47 ms  ggr3-ge90.sffca.ip.att.net [12.122.82.149]
 11    40 ms    35 ms    35 ms  so1-3-0-2488M.ar1.SJC2.gblx.net [208.51.134.109] 
 12    63 ms    68 ms    57 ms  so7-0-0-2488M.ar2.SEA1.gblx.net [67.17.71.185]
 13     *        *        *     Request timed out.
 14     *        *        *     Request timed out.
 15     *        *        *     Request timed out.
 16     *        *        *     Request timed out.
 17     *        *        *     Request timed out.
 18     *        *        *     Request timed out.
 19     *        *        *     Request timed out.
 20     *        *        *     Request timed out.
 21     *        *        *     Request timed out.
 22     *        *        *     Request timed out.
 23     *        *        *     Request timed out.
 24     *        *        *     Request timed out.
 25     *        *        *     Request timed out.
 26     *        *        *     Request timed out.
 27     *        *        *     Request timed out.
 28     *        *        *     Request timed out.
 29     *        *        *     Request timed out.
 30     *        *        *     Request timed out.

Trace complete.

C:\>

OK, the second traceroute failed. That doesn't mean that the packets didn't get there, it just means that we don't know how the packets got there.

I made certain that the packets reached both destinations by using the telnet program to connect to port 6667 (the IRC server port) at each of those IP addresses. Both of those IRC servers are working and both are reachable by me.

If you will run those two `tracert` commands, perhaps we will be able to tell where your packets are disappearing to.

soulidentities · 10-08-2006, 11:44 PM

ok here my tracert result:

Quote:

C:\>tracert 194.168.45.50

Tracing route to 194.168.45.50 over a maximum of 30 hops

1 1 ms <1 ms <1 ms 172.16.1.5
2 172.16.1.5 reports: Destination host unreachable.

Trace complete.

Quote:

C:\>tracert 208.99.193.130

Tracing route to 208.99.193.130 over a maximum of 30 hops

1 <1 ms <1 ms <1 ms 172.16.1.5
2 172.16.1.5 reports: Destination host unreachable.

Trace complete.

Now u can see the difference between ur tracert and my tracert. I understand how this working. But by my tracert result what this means and how to solve

Will.Spencer · 10-09-2006, 04:08 AM

Ouch... this tells us less than I had hoped for.

We know that the destination host is unreachable, but we still don't know why.

Can you reach anything on the Internet from that system?

What is the output of the `netstat -nr` command? That command will print out your systems routing table.

soulidentities · 10-09-2006, 06:00 AM

I think u hardly understand the table Bcoz the table structure looks a lil confusing for past. Although I tried to make a shape for u. Best of luck

Quote:

C:\>netstat -nr

Route Table
================================================== =========================
Interface List
0x1 ........................... MS TCP Loopback interface
0x20002 ...00 0f fe 10 ac 1f ...... Intel(R) PRO/100 VE Network Connection - Pac ket Scheduler Miniport
================================================== =========================
================================================== =========================
Active Routes:
Network Destination---Netmask----- Gateway---- Interface--------Metric
--------0.0.0.0--------0.0.0.0 ------172.16.1.5---172.16.3.133------- 20
--- ---127.0.0.0-------255.0.0.0-----127.0.0.1 ---127.0.0.1 ----------- 1
-------172.16.0.0------255.255.0.0----172.16.3.133---172.16.3.133 ----20
-------172.16.3.133-----255.255.255.255--127.0.0.1--- 127.0.0.1 --------20
-----172.16.255.255----255.255.255.255--172.16.3.133-- 172.16.3.133--- 20
-------224.0.0.0------ 240.0.0.0 -----172.16.3.133--172.16.3.133----20
----255.255.255.255---255.255.255.255---172.16.3.133--172.16.3.133-----1
Default Gateway: 172.16.1.5
================================================== =========================
Persistent Routes:
None

The netstate -nr showing the table while I m downloading a movie from www.rapidshare.de.

I m lossing my hope

Anyway thanx whatevar u r doing 4 me

Will.Spencer · 10-09-2006, 07:45 AM

Let's look at what this is telling us.

First, it tells us that most of your packets go to the default gateway, which is 172.16.1.5.

172.16.1.5 is part of a private address space, as defined in RFC 1918.

OK, so everything you have is on private address space. Your ISP isn't giving you a public IP. That's crappy, but that's the way that it is.

Or, you have a firewall or router running NAT and you are doing this to yourself. How is your PC connected to your ISP?

This table also shows us a really bizarre routing model. You have three different routes for packets to follow, depending upon the destination within the 172.16.x.x network. That is confusing as hell. I am trying to imagine how and why that was configured.

Have you manually added any routes with the `route add` command?

Worse, the route that is broken is using your default route (172.16.1.5).

I am very confused, not about why IRC is broken -- about why anything works at all.

Let's look at something which does work and see what network path those packets are taking.

Show me the output of `tracert www.rapidshare.de`. That will tell us how those packets are successfully getting to their destination.

soulidentities · 10-09-2006, 09:46 AM

Actually the vendor gave me a private add its true. The vendor takes an ip from ISP and they make a server for distribute the internet conn. Bcoz they r doing biziness. May b the vendor use a firewall for protection (I dont know). But last nite when I chat wid ma frnd n he invited me for cam (in yahoo) then there was a error msg. That I m Bhind a firewall.

Now I do tracert the rapidshare. But same ans (destination unreac...). I think I have to find a diff way to connect irc. what do u think???

pls gimme a solution

Im fade up to fight wid this.

Still I can fight if there will b any way.
Thanx

darviria · 10-09-2006, 11:56 AM

Are you trying to connect to the right port on the irc server.....OR if your ISP is blocking it, is there another port you can connect to?

I've not really heard of ISPs blocking irc though but if they are you could try connecting with ssl if the server allows it. You'll need a better irc client than mirc though, try X-Chat or Irssi

Will.Spencer · 10-09-2006, 06:49 PM

If your data packets are reaching the destination, but traceroute isn't working, then I believe we can safely say that your ISP is blocking ICMP (Internet Control Message Protocol) traffic. That will break ping and traceroute, but leave other services unaffected.

With your ISP doing such weird things (blocking ICMP, handing out private addresses, odd routing schemes), it is difficult to determine what is going on.

If it were me, I would call them up and yell at them and refuse to get off the telephone until my issue was resolved.

There is a small chance that you might see a more useful error message if you telnetted directly to the IRC server port of your IRC server. For you, the command would be `telnet irc.dal.net 6667`.

However, once you get all of these issues resolved -- you will soon find more. Without a public IP address, IRC servers are going to have trouble running an ident query to verify you. Most IRC servers will refuse to allow you to connect if they can't connect to a functioning identd, and I'll bet that identd is not going to work with your ISP.

soulidentities · 10-09-2006, 11:00 PM

okay i telnet irc but the result is below,

Quote:

C:\>telnet irc.dal.net 6667
Connecting To irc.dal.net...Could not open connection to the host, on port 6667: Connect failed

Now I think the port has been blocked by the firewall.
I have also tried many other ports but no response and same result.

Now can u tell me any other way to login mirc ???

soulidentities · 10-09-2006, 11:10 PM

Quote:

Originally Posted by darviria

Are you trying to connect to the right port on the irc server.....OR if your ISP is blocking it, is there another port you can connect to?

I've not really heard of ISPs blocking irc though but if they are you could try connecting with ssl if the server allows it. You'll need a better irc client than mirc though, try X-Chat or Irssi

Ya I have tried many ports but same ans. I think u have read my previous post, which spencer asked me to do n I have shown the result. It can nslookup the server but can not tracert the path. I tried many ways but I m fail

anyway can u tell me more about ssl, X-Chat or Irssi. i dont know what is that but still wanna learn. Is there any tutorial wher I can learn !!!

Thanx anyway.

soulidentities · 10-09-2006, 11:47 PM

I m adding my `ipconfig/ all` also if it helps

Its DHCP connection.

Quote:

C:\>ipconfig/all

Windows IP Configuration

Host Name . . . . . . . . . . . . : wasim
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : rdec-domain.org

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : rdec-domain.org
Description . . . . . . . . . . . : Intel(R) PRO/100 VE Network Connection
Physical Address. . . . . . . . . : 00-50-8D-48-66-97
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 172.16.3.127
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . : 172.16.1.5
DHCP Server . . . . . . . . . . . : 172.16.1.2
DNS Servers . . . . . . . . . . . : 172.16.1.2
172.17.1.2
Primary WINS Server . . . . . . . : 172.16.1.2
Lease Obtained. . . . . . . . . . : Tuesday, October 10, 2006 8:59:34 AM

Lease Expires . . . . . . . . . . : Wednesday, October 11,2006 8:59:34 AM

Thanx

Will.Spencer · 10-10-2006, 12:03 AM

You are really going to have to call your ISP and yell at them until the fix their broken network.

soulidentities · 10-10-2006, 12:09 AM

Quote:

Originally Posted by Will.Spencer

You are really going to have to call your ISP and yell at them until the fix their broken network.

No other way to login mirc ???

Bcoz I called them why this happend n they said they didnt block any port n may b they r lying. Thats why I m asking help whats the other way to login mirc.

Will.Spencer · 10-10-2006, 12:12 AM

IRC uses TCP port 6667. Without TCP port 6667, you can't use IRC.

But... you could get a Unix shell account somewhere else on the Internet and login to that Unix shell and use IRC from there.

Then, youwould be using TCP port 22 from your local network to the remote Unix box and port 6667 from the remote Unix box to the IRC server.

Of course, this is assuming that your ISP hasn't broken port 22.

Will.Spencer · 10-10-2006, 12:13 AM

Wait...

Are you running any type of firewall or security software yourself?

Could you have accidentally blocked port 6667?

soulidentities · 10-10-2006, 12:17 AM

Quote:

Originally Posted by Will.Spencer

Wait...

Are you running any type of firewall or security software yourself?

Could you have accidentally blocked port 6667?

No I dont use anyfirewall. I just use Symantec Antivirus Corporate Edition.
But so far I know it hasn't any firewall. But I tried without virus guard but undone.
At least I know that the vendor wher from I got the net conn, They use firewall.

May b they blocked the port.

soulidentities · 10-10-2006, 12:19 AM

Quote:

Originally Posted by Will.Spencer

IRC uses TCP port 6667. Without TCP port 6667, you can't use IRC.

But... you could get a Unix shell account somewhere else on the Internet and login to that Unix shell and use IRC from there.

Then, youwould be using TCP port 22 from your local network to the remote Unix box and port 6667 from the remote Unix box to the IRC server.

Of course, this is assuming that your ISP hasn't broken port 22.

Actually I dont know how to use Unix shell account. Do u have any tutorial about that???

Thanx

Will.Spencer · 10-10-2006, 12:22 AM

Quote:

Originally Posted by soulidentities

Actually I dont know how to use Unix shell account. Do u have any tutorial about that???

Check out these Unix tutorials and these Unix tutorials.

Will.Spencer · 10-10-2006, 12:23 AM

Quote:

Originally Posted by soulidentities

At least I know that the vendor wher from I got the net conn, They use firewall.

May b they blocked the port.

The vendor where you got the what?

soulidentities · 10-10-2006, 12:25 AM

Quote:

Originally Posted by Will.Spencer

Check out these