i didn't install any firewall in my ubuntu. is there some firewall in default install of ubuntu? <div>2008/4/1, Nils Kassube <<a href="mailto:kassube@gmx.net">kassube@gmx.net</a>>:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> stin wang wrote: > because if i use windows, those subnet communicate properly. > > pc1 ubuntu > pc2 and pc3 pc4 all in windows > > I think it should be some wrong with my network configure ,mabey > hardware. Well, if you can ping any other PC, the hardware should be OK. But did you install a firewall on your Ubuntu machine? > maybe i should get some help from my network administrator. Probably that's the best way to solve the problem - your network administrator sure knows the network layout and what is allowed and what not. Nils -- ubuntu-users mailing list <a href="mailto:ubuntu-users@lists.ubuntu.com">ubuntu-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-users">https://lists.ubuntu.com/mailman/listinfo/ubuntu-users</a> </blockquote></div> -- ---------------------------------------------- Tie Wang TianJin Climate Center TianJin Meteorological Bureau Tianjin, China, 300074 Email: <a href="mailto:stin.wang@gmail.com">stin.wang@gmail.com</a> Tel:+86-22-23333559 ----------------------------------------------