Re: ip address behind router ?
FreeBsdBeni wrote: I can indeed access the Linksys modem directly and find out the address. But I was hoping for a more direct or easier way to do it, if possible... Point your browser to www.whatismyip.com Kind regards, Benjamin ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: ip address behind router ?
Looks to me that this page is not entirely accurate. (at least from where I am) It would appear to get a proxy server somewhere along the way. I would consider using the dynamic dns services - such as no-ip - and use a perl script that updates then ping your dns name. Not sure if they are more accurate that the below idea though. On 11/1/05 8:26 AM, Tom Connolly [EMAIL PROTECTED] wrote: Brian Davis wrote: On Sun, 9 Jan 2005 14:38:56 +0100 FreeBsdBeni [EMAIL PROTECTED] wrote: Hi, How do I find what ip address I'm really having ? My adsl modem/firewall gives me a dynamic private address : 192.168.1.101, which is what I see with an ifconfig. But how do I find the real (dynamic) address given to my modem by my provider ? I'm using 5.3-rel-p4. -- Beni. If you just need a simple solution to see your external IP address, just go to: http://www.ostrosoft.com/OIT/external_ip.asp It will show your outside IP address in red. Good luck, Tom ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] -- Shane Ambler Sales Department 007Marketing.com [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
RE: ip address behind router ?
Shane Ambler wrote: Looks to me that this page is not entirely accurate. (at least from where I am) It would appear to get a proxy server somewhere along the way. Yes this is true. If your behind a proxy or have a complicated network setup, this will fail. For most DSL/Cable modem customers this simple solution will work fine. These services are going to get the IP address of the last packet sent from the network. If you have more than one router, this will be the last router (NAT device) in your setup. It should work for most simple cases though. There are also some other web servers out there that offer this functionality. Just Google on external or outside IP and see if any of the other sites show any differences. I would consider using the dynamic dns services - such as no-ip - and use a perl script that updates then ping your dns name. Not sure if they are more accurate that the below idea though. That is an interesting idea. I would bet they may have the same problems with proxy servers and such but it would be worth a try. Good Luck, Tom ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: ip address behind router ?
FreeBsdBeni wrote: [ ... ] I can indeed access the Linksys modem directly and find out the address. But I was hoping for a more direct or easier way to do it, if possible... Because you are using a device which performs NAT, you have to query that device to find out the real IP; there is no way on a machine within the private NAT'ed subnet to get external information without asking externally. However, if you connect your machine directly to the aDSL modem rather than using a firewall/router, you could run ifconfig on your machine and see the real IP. You'd probably have to configure pppoe which can be a pain, and your typical Linksys broadband router already does a good job of handling that. -- -Chuck ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: ip address behind router ?
On Sun, 9 Jan 2005 14:38:56 +0100 FreeBsdBeni [EMAIL PROTECTED] wrote: Hi, How do I find what ip address I'm really having ? My adsl modem/firewall gives me a dynamic private address : 192.168.1.101, which is what I see with an ifconfig. But how do I find the real (dynamic) address given to my modem by my provider ? I'm using 5.3-rel-p4. -- Beni. Try the traceroute command. The first IP address will be the address of your modem. If I traceroute my ISP this is the output. The 1st line contains the IP address of my cable modem. traceroute to cox.net (68.1.17.9), 64 hops max, 40 byte packets 1 ip68-102-20-166.ks.ok.cox.net (68.102.20.166) 1.942 ms 1.941 ms 1.861 ms 2 ip68-102-0-1.ks.ok.cox.net (68.102.0.1) 14.284 ms 18.493 ms15.513 ms 3 ip68-103-127-194.ks.ok.cox.net (68.103.127.194) 21.864 ms 14.744 ms 11.646 ms 4 ip68-103-255-237.ks.ok.cox.net (68.103.255.237) 14.404 ms 32.946 ms 13.704 ms 5 68.1.1.180 (68.1.1.180) 18.623 ms 13.751 ms 18.183 ms 6 68.1.1.175 (68.1.1.175) 24.568 ms 29.769 ms 19.844 ms 7 mtc3bbrc02-pos0100.rd.ok.cox.net (68.1.0.103) 41.478 ms 20.997 ms 28.005 ms 8 lkhnbbrc01-pos0200.rd.at.cox.net (68.1.0.113) 51.983 ms 57.733 ms 48.226 ms 9 lkhndsrc01-pos0901.rd.at.cox.net (68.1.0.5) 60.806 ms 85.053 ms 53.278 ms 10 lkhnsysc01-gic03.at.cox.net (68.1.15.242) 46.912 ms 49.078 ms 50.568 ms 11 lkhnsysl01-gex1.at.cox.net (68.1.16.53) 63.030 ms 57.538 ms 64.792 ms ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
RE: ip address behind router ?
Brian Davis wrote: On Sun, 9 Jan 2005 14:38:56 +0100 FreeBsdBeni [EMAIL PROTECTED] wrote: Hi, How do I find what ip address I'm really having ? My adsl modem/firewall gives me a dynamic private address : 192.168.1.101, which is what I see with an ifconfig. But how do I find the real (dynamic) address given to my modem by my provider ? I'm using 5.3-rel-p4. -- Beni. If you just need a simple solution to see your external IP address, just go to: http://www.ostrosoft.com/OIT/external_ip.asp It will show your outside IP address in red. Good luck, Tom ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: ip address behind router ?
On Mon, Jan 10, 2005 at 03:52:02PM -0600, Brian Davis wrote: On Sun, 9 Jan 2005 14:38:56 +0100 FreeBsdBeni [EMAIL PROTECTED] wrote: Hi, How do I find what ip address I'm really having ? My adsl modem/firewall gives me a dynamic private address : 192.168.1.101, which is what I see with an ifconfig. But how do I find the real (dynamic) address given to my modem by my provider ? I'm using 5.3-rel-p4. -- Beni. Try the traceroute command. The first IP address will be the address of your modem. If I traceroute my ISP this is the output. The 1st line contains the IP address of my cable modem. That doesn't work well if you use NAT, because traceroute works only in one direction (forward). With NAT you will see something like 1. internal address of your nat box/router (say: 192.168.1.1) 2. address of your NAT box' peer (the ISP router at the other end of the ADSL link, not your external address) 3. other addresses. The problem is that between 1 and 2, you won't see the external address of your NAT box (the one it got e.g. via DHCP). If you want to see that address, you'll have to perform the traceroute 'backwards'. That's what RR-Records in the ICMP protocol are for. % ping -R www.freebsd.org PING www.freebsd.org (216.136.204.117): 56 data bytes 64 bytes from 216.136.204.117: icmp_seq=0 ttl=53 time=235.246 ms RR: natbox.yourdomain.tld (a.b.c.d) upstream.yourprovider.tld (e.f.g.h) ... more addresses here ... Your external address would be a.b.c.d in the example above. e.f.g.h would be the 'other side' of your peer (isp) router (looking to ITS upstream router and away from you). Essentially, RR records are being seen from the destination (here: www.freebsd.org) rather than from the source. That's the only way to see the external address (a.b.c.d) of your NAT box. Cheers, -cpghost. -- Cordula's Web. http://www.cordula.ws/ ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: ip address behind router ?
On Sunday 09 January 2005 06:38 am, FreeBsdBeni wrote: Hi, How do I find what ip address I'm really having ? My adsl modem/firewall gives me a dynamic private address : 192.168.1.101, which is what I see with an ifconfig. But how do I find the real (dynamic) address given to my modem by my provider ? I'm using 5.3-rel-p4. Most adsl gateways/modems have a web based configuration system, you should be able to access it from: http://192.168.1.1:80/ Look over the options and see if there is a status section, this will more then likely have the info you want. You really should get a static ip from your isp if you are going to be running a server, better would be a small block of them. You will also need to setup a static network and forward any ports from the dsl gateway to your freebsd box if you want to be able to access any services you are going to run. -- - James ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: ip address behind router ?
On Sunday 09 January 2005 14:38, FreeBsdBeni wrote: Hi, How do I find what ip address I'm really having ? My adsl modem/firewall gives me a dynamic private address : 192.168.1.101, which is what I see with an ifconfig. But how do I find the real (dynamic) address given to my modem by my provider ? I'm using 5.3-rel-p4. To be a little more clearer : I do not want to go to any website (like http://www.lawrencegoetz.com/programs/ipinfo/ and others) that can show it (it won't cause i'm using tor...) but I'm looking for a way via console or an option in ifconfig or whatever. Hope my question is a bit more clear with this ? Thx for any info ! -- FreeBsdBeni. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: ip address behind router ?
On Sunday 09 January 2005 14:56, James Jhai wrote: On Sunday 09 January 2005 06:38 am, FreeBsdBeni wrote: Hi, How do I find what ip address I'm really having ? My adsl modem/firewall gives me a dynamic private address : 192.168.1.101, which is what I see with an ifconfig. But how do I find the real (dynamic) address given to my modem by my provider ? I'm using 5.3-rel-p4. Most adsl gateways/modems have a web based configuration system, you should be able to access it from: http://192.168.1.1:80/ Look over the options and see if there is a status section, this will more then likely have the info you want. You really should get a static ip from your isp if you are going to be running a server, better would be a small block of them. You will also need to setup a static network and forward any ports from the dsl gateway to your freebsd box if you want to be able to access any services you are going to run. I can indeed access the Linksys modem directly and find out the address. But I was hoping for a more direct or easier way to do it, if possible... -- FreeBsdBeni. pgpa17W5iBn99.pgp Description: PGP signature
Re: ip address behind router ?
On Sun, Jan 09, 2005 at 02:38:56PM +0100, FreeBsdBeni wrote: Hi, How do I find what ip address I'm really having ? My adsl modem/firewall gives me a dynamic private address : 192.168.1.101, which is what I see with an ifconfig. But how do I find the real (dynamic) address given to my modem by my provider ? That's not as easy as it sounds, esp. if you're using NAT on the router. The config is basically this: +---+ 192.168.1.101 ++ A.B.C.D | Your_Host |-| Router |//-+ +---+ 192.168.1.1 ++ | | | E.F.G.H ++ | ISP Router | ++ So basically, Your_Host has no way (and no need) to know A.B.C.D or E.F.G.H Now you could try a combination of traceroute(8) and ping(8) to get that address. For example, try the -R Record Route option to ping(8): % ping -R www.freebsd.org If your Router is configured to honor RR requests, it will list its A.B.C.D address in the reply, and ping will show it as the first RR-Record in the list of max. 9 route records that you can get out of the ICMP protocol spec. Another way to do this, is to enable a routing daemon on the router, and use some utility on Your_Host to listen to the routing updates, or even query those updates with SNMP. But not every router supports this option. Sometimes, you can also query the ISP Router directly, but that's also unreliable, since most ISPs block SNMP requests on the last mile for security reasons. You may as well try to get the info from the HTTP config managemnt interface of your router http://192.168.1.1:80/ or so. I'm using 5.3-rel-p4. -- Beni. Cheers, -cpghost. -- Cordula's Web. http://www.cordula.ws/ ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
