how to detect whether the isp is giving me public ip?

[furiousTaher]

How do you detect if your ISP actually gave you a public ip address(static or dynamic)? I mean they must have given me a public ip but how do I know if they did not secretly made me to share it with another user?


I have a dynamic public ip address and I am behind my router(isp set up the router to russian pppoe login system). I usually check whether ISP is still keeping my public ip address by hosting teamspeak or hfs or other software like apache/filezilla servers and then joining the server using public ip.


Is there any better way to do this? Can you detect that ISP is not giving you public ip by using tracert command?

PS: my router's status page shows a public ip as ip address and same ip for default gateway(subnet is 255.255.255.0)

[furiousTaher]

Multiple user ke same ip dile port 80 obosshoi closed thakbe. Tai eta check koreo jana jete pare.

really? but i am pretty sure when i was using local isp with private ip they had port 80 open... i used skype garena and some other software using port 80. doesnt browsers also use port 80 always?

[Véиòmøûs Vàmþý]

download hfs and see if you can host a file server or not. if you can, then you got a public ip. dont forget to forward your port if you use a router.

[furiousTaher]

download hfs and see if you can host a file server or not. if you can, then you got a public ip. dont forget to forward your port if you use a router.

thats usually how i do it... is there any better way?

[Sybaris Caesar]

Vampy apu! Welcome back! :cheers:

[MusharratC]

thats usually how i do it... is there any better way?

Do u have to ask you're ISP to open up any specific port? I tried HFS a while ago. Couldn't get it to work though. :/

[Véиòmøûs Vàmþý]

thats usually how i do it... is there any better way?

well, i cant find any better and easiest one than this.

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Do u have to ask you're ISP to open up any specific port? I tried HFS a while ago. Couldn't get it to work though. :/

by default hfs use the port 80 and for some reason some ISP block it. just change the port number like i did. i changed it to 81 and works just fine.

[furiousTaher]

Do u have to ask you're ISP to open up any specific port? I tried HFS a while ago. Couldn't get it to work though. :/

no i use ts/hfs and some game servers didnt have to ask link3 or dot to open any port... yet

[MusharratC]

well, i cant find any better and easiest one than this.

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by default hfs use the port 80 and for some reason some ISP block it. just change the port number like i did. i changed it to 81 and works just fine.

thanks. dekhi, i gotta try it out.

[Sumit Pramanik]

Try PF Port cheker and check if the ports are open. They all should be if its public/real IP.

[Codex]

Literally just host/run any app that listens on a port, and try to connect to that port externally (many sites around that do this)

What app you use is largely not relevant.

Generally, 1:1 NAT bindings are rather rare. So even without doing this, if your ISP's DHCP server (or static configuration) gives you a public IP -- you probably have a real, public IP.