I think I found the reason why connection is always failed. I tried to tcpdump and found that telnet to 5.4.3.2 is using 9.8.7.6. I don't know why this happen?
sangprabv [email protected] On Feb 6, 2010, at 12:48 AM, Michael Weickel - iQom Business Services GmbH wrote: > > Maybe nothing runs on the requested port on the other side? > I think without a dump it would be hard to manage your problem by the list. > > > -----Ursprüngliche Nachricht----- > Von: sangprabv [mailto:[email protected]] > Gesendet: Freitag, 5. Februar 2010 18:42 > An: Shorewall Users > Betreff: Re: [Shorewall-users] DNAT Problem > > I use Ubuntu and I don't think mask is mandatory because if it is mandatory > then why telnet to 9.8.7.6 always success and not with 5.4.3.2. It makes me > crazy :( > > > > sangprabv > [email protected] > > > On Feb 5, 2010, at 11:35 PM, Michael Weickel - iQom Business Services GmbH > wrote: > >> >> This looks ok. >> >> I suggest you make a quick try with >> >> (policy file) >> >> loc net ACCEPT >> >> If you still cannot access to the internet by telnet something with your >> routing is wrong or you have conflicts in your policy or rules file. >> To check this I think a shorewall dump is needed. But if this would be > true >> you should maybe see something in your messages. A tcpdump output could > help >> as well. >> >> Routing seems to be ok if you still have >> >> But if this is kernel route command I miss the netmask parameter. I don’t >> know anything about your distribution but to add routes there should be >> always a netmask parameter. Try to trace the internet ip >> >>> route add 9.8.7.6 gw 192.168.8.1 >>> route add 5.4.3.2 gw 192.168.8.1 >> >> >> >> Cheers >> Mike >> >> >> >> -----Ursprüngliche Nachricht----- >> Von: sangprabv [mailto:[email protected]] >> Gesendet: Freitag, 5. Februar 2010 17:23 >> An: Shorewall Users >> Betreff: Re: [Shorewall-users] DNAT Problem >> >> Thanks for the reply, I have this setting in >> /etc/shorewall/masq: >> eth0 eth1 >> >> eth0 is the public IP, while eth1 is the private network >> >> I have tried your solution but it doesn't work as well. >> >> >> >> >> sangprabv >> [email protected] >> >> >> On Feb 5, 2010, at 3:51 PM, Michael Weickel - iQom Business Services GmbH >> wrote: >> >>> >>> If you want to let your local machines access the internet by telnet than >>> DNAT is the wrong choice. DNAT is for access from internet to local >>> machines. >>> >>> You should try something like (rules file) >>> >>> ACCEPT loc:192.168.8.37 net:5.4.3.2 tcp >>> 55000 >>> >>> If you have policy >>> >>> ACCEPT loc net >>> >>> The rule will be useless. >>> >>> If your first client can but your sencond cant access, I guess you > already >>> have some rules or policies allowing this. >>> >>> In this case I suggest to doublecheck your masq file whether you only > masq >>> 192.168.8.35 or the whole network e.g. 192.168.8.0/24? >>> >>> >>> Cheers >>> Mike >>> >>> -----Ursprüngliche Nachricht----- >>> Von: sangprabv [mailto:[email protected]] >>> Gesendet: Freitag, 5. Februar 2010 09:28 >>> An: Shorewall Users >>> Betreff: [Shorewall-users] DNAT Problem >>> >>> Hi, >>> I have a client behind shorewall which has 2 IP: >>> 192.168.8.35 is the real IP and 192.168.8.37 is the virtual IP. >>> I have added DNAT rules into shorewall: >>> DNAT net loc:192.168.8.35 >> tcp >>> 11008 - 1.2.3.4 >>> DNAT net loc:192.168.8.37 >> tcp >>> 55000 - 1.2.3.5 >>> >>> 1.2.3.4 and 1.2.3.5 is virtual IP on firewall side >>> >>> I want 192.168.8.35 able to telnet to my partner IP 9.8.7.6:11008 and it >> can >>> connect OK. >>> And I want also 192.168.8.37 able to my partner IP 5.4.3.2:55000 and this >>> one FAIL. >>> If i try telnet my.partner.ip.add:55000 -b 1.2.3.5 at firewall it is OK. >>> >>> I have manually added >>> route add 9.8.7.6 gw 192.168.8.1 >>> route add 5.4.3.2 gw 192.168.8.1 >>> Both added to the client routing table. What's wrong with my >> configuration? >>> Many thanks for help. >>> >>> >>> >>> sangprabv >>> [email protected] >>> >>> >>> >>> >> > ---------------------------------------------------------------------------- >>> -- >>> The Planet: dedicated and managed hosting, cloud storage, colocation >>> Stay online with enterprise data centers and the best network in the >>> business >>> Choose flexible plans and management services without long-term contracts >>> Personal 24x7 support from experience hosting pros just a phone call > away. >>> http://p.sf.net/sfu/theplanet-com >>> _______________________________________________ >>> Shorewall-users mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/shorewall-users >>> >>> >>> >> > ---------------------------------------------------------------------------- >> -- >>> The Planet: dedicated and managed hosting, cloud storage, colocation >>> Stay online with enterprise data centers and the best network in the >> business >>> Choose flexible plans and management services without long-term contracts >>> Personal 24x7 support from experience hosting pros just a phone call > away. >>> http://p.sf.net/sfu/theplanet-com >>> _______________________________________________ >>> Shorewall-users mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/shorewall-users >> >> >> > ---------------------------------------------------------------------------- >> -- >> The Planet: dedicated and managed hosting, cloud storage, colocation >> Stay online with enterprise data centers and the best network in the >> business >> Choose flexible plans and management services without long-term contracts >> Personal 24x7 support from experience hosting pros just a phone call away. >> http://p.sf.net/sfu/theplanet-com >> _______________________________________________ >> Shorewall-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/shorewall-users >> >> >> > ---------------------------------------------------------------------------- > -- >> The Planet: dedicated and managed hosting, cloud storage, colocation >> Stay online with enterprise data centers and the best network in the > business >> Choose flexible plans and management services without long-term contracts >> Personal 24x7 support from experience hosting pros just a phone call away. >> http://p.sf.net/sfu/theplanet-com >> _______________________________________________ >> Shorewall-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/shorewall-users > > > ---------------------------------------------------------------------------- > -- > The Planet: dedicated and managed hosting, cloud storage, colocation > Stay online with enterprise data centers and the best network in the > business > Choose flexible plans and management services without long-term contracts > Personal 24x7 support from experience hosting pros just a phone call away. > http://p.sf.net/sfu/theplanet-com > _______________________________________________ > Shorewall-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/shorewall-users > > > ------------------------------------------------------------------------------ > The Planet: dedicated and managed hosting, cloud storage, colocation > Stay online with enterprise data centers and the best network in the business > Choose flexible plans and management services without long-term contracts > Personal 24x7 support from experience hosting pros just a phone call away. > http://p.sf.net/sfu/theplanet-com > _______________________________________________ > Shorewall-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/shorewall-users ------------------------------------------------------------------------------ The Planet: dedicated and managed hosting, cloud storage, colocation Stay online with enterprise data centers and the best network in the business Choose flexible plans and management services without long-term contracts Personal 24x7 support from experience hosting pros just a phone call away. http://p.sf.net/sfu/theplanet-com _______________________________________________ Shorewall-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/shorewall-users
