On Thursday 06 August 2009 09:22:35 [email protected] wrote: > > How much better are the more expensive 3G plans over the cheaper plans? > > > > I have just tried out a 3G broadband dongle on linux > > Model : E160 > > I tried to get it to work on Centos 5.3 but failed..... couldn't get > > "usb_modeswitch" to give a "/dev/USB0" . > > However tried on Debians "LENNY" and was it was trivial to get online > > using the E160. > > (just needed the dial string) > > > > I tried the 1Gig residential plan & found it wanting. > > > > The dialup PPP connection ONLY allows 4 incoming ports it seems. > > > > Among other Apps, I would like to remotely connect via SSH. > > > > Do the higher priced plans have less retrictions ? > > Do the higher priced plans support SSH? > > > > I found only 4 ports open. as below ............. > > > > r...@debian:~# netstat -an | grep "LISTEN " > > tcp 0 0 0.0.0.0:34376 0.0.0.0:* > > LISTEN tcp 0 0 0.0.0.0:111 0.0.0.0:* > > LISTEN tcp 0 0 127.0.0.1:631 0.0.0.0:* > > LISTEN tcp 0 0 127.0.0.1:25 0.0.0.0:* > > LISTEN > > Netstat shows you the ports where you have a daemon actively listening > for connections; this has nothing at all to do with what traffic the > network would allow. > Not having ssh show up here just means you don't have an sshd listening - > it says nothing about whether you'd be able to connect to that port or not. > > The bottom two (internet printing protocol and SMTP) are listening on > localhost only, so won't be accessible over the network anyway. > > The top two are more concerning; port 111 is RPC, which you don't want > to expose to the internet; I have no idea what 34376 is. If you run > "sudo netstat -pan", it will tell you which process is bound to that > socket. > > >From your point of view, the IP address you're assigned is going to be > > more significant; do > you get an RFC1918 address (ie, an address in one of the networks > 192.168.0.0/16, 172.16.0.0/12, or 10.0.0.0/8), or is it a public IP?
I just setup one for a customer on telstra: They all have a private 10.x.x.x address so you can browse OUT using masq but getting BACK to your box is an issue. I resolved that by establishing a VPN to a known server. In the end performance (perth) was so dismal that he gave up. Data transfer was from nearly 400KB / sec down to 10KB and changed on a second to second basis. His app was data-collection for dynamic structure analysis. (B is bytes, not bits) But there would seem to be no point in *any* port blocking in this picture. I found none. James -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
