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    Nat reflection and udp

    Scheduled Pinned Locked Moved NAT
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    • A
      aldo
      last edited by

      i agree but that was the result

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      • S
        sullrich
        last edited by

        Rerun the commands that I mentioned earlier.  I have updated the file to cover the tcp case either way.

        I know for a fact that if other devs catch wind of this they are not going to like it.  I would have to agree with them, this should not be necessary.

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        • A
          aldo
          last edited by

          i see the issue scott

          make the udp case empty above the tcp case
          and fill in the tcp case but then look at your working cases in the rdr sections there is the issue
          i reran the commands but there is an error in the filter.inc on 389 or thereabouts now as well i fixed an if that was missing an I

          role it back scott i will work on it tomorrow i understand what youa re trying to achieve now and how you should do it using your method.
          i will have better resourses tomorrow i am at home at moment and is 1am

          i will send you the diffs tomorrow for your review

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          • A
            aldo
            last edited by

            ok i think you will be happy with the localhost rules but not so pleased with the nc inetd bits
            have a look and let me know

            it works perfectly and that was my goal

            filter.inc.txt

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            • S
              sullrich
              last edited by

              Looks like you started with a dated filter.inc.

              Can you:

              #1 update your filter.inc and make the changes again
              #2 send a diff -u patch?  I need to also make these changes in -HEAD which this will assist with

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              • A
                aldo
                last edited by

                will do it tomorrow for you got it working on a 7-9-06 box.

                so will diff for you when i can

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                • S
                  sullrich
                  last edited by

                  You need to include the most latest and greatest filter.inc.

                  http://pfsense.com/cgi-bin/cvsweb.cgi/pfSense/etc/inc/filter.inc?only_with_tag=RELENG_1

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                  • A
                    aldo
                    last edited by

                    synced my dev build just now and rebuilt diff attached

                    diff2-filter.inc.txt

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                    • S
                      sullrich
                      last edited by

                      Thanks, I've commited a slightly different version.

                      $rule['protocol'] should be used instead of the hard coded udp value since that case can trip for tcp or udp.

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                      • A
                        aldo
                        last edited by

                        ok will test this case for you
                        thanks for wasting all that time scott i know what to do next time

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                        • A
                          aldo
                          last edited by

                          THE BAD NEWS ON REFLECTION

                          ##########################
                          TEST WITH SCOTTS COMMITED  FILTER.INC
                          ##########################

                          #######
                          TEST1
                          udp rule
                          ########

                          NAT Inbound Redirects

                          rdr on vlan1 proto udp from any to 192.168.50.254 port { 161 } -> 10.250.100.129

                          Reflection redirects

                          rdr on $lan proto udp from any to 192.168.50.254 port { 161 } -> 127.0.0.1 port 19000

                          NAT Reflection rules

                          pass in quick on $lan inet proto udp from any to $loopback port 19000 keep state label "NAT REFLECT: Allow traffic to localhost"

                          Inetd conf
                          19000  stream  udp    nowait/0        nobody  /usr/bin/nc nc -u -w 20 10.250.100.129 161

                          ##########
                          TEST 2
                          tcp rules
                          ##########

                          NAT Inbound Redirects

                          rdr on vlan1 proto tcp from any to 192.168.50.254 port { 80 } -> 10.250.100.129

                          Reflection redirects

                          rdr on $lan proto tcp from any to 192.168.50.254 port { 80 } -> 127.0.0.1 port 19002

                          NAT Reflection rules

                          pass in quick on $lan inet proto udp from any to $loopback port 19001 keep state label "NAT REFLECT: Allow traffic to localhost"

                          Inetd conf
                          19002  stream  tcp    nowait/0        nobody  /usr/bin/nc nc -w 20 10.250.100.129 80

                          ############
                          TEST3
                          tcp - udp rule
                          ############

                          NAT Inbound Redirects

                          rdr on vlan1 proto { tcp udp } from any to 192.168.50.254 port { 123 } -> 10.250.100.129

                          Reflection redirects

                          rdr on $lan proto { tcp udp } from any to 192.168.50.254 port { 123 } -> 127.0.0.1 port 19004

                          NAT Reflection rules

                          pass in quick on $lan inet proto tcp from any to $loopback port 19002 keep state label "NAT REFLECT: Allow traffic to localhost"
                          pass in quick on $lan inet proto udp from any to $loopback port 19002 keep state label "NAT REFLECT: Allow traffic to localhost"

                          Inetd conf
                          19004  stream  tcp/udp nowait/0        nobody  /usr/bin/nc nc -w 20 10.250.100.129 123

                          #############################

                          TEST WITH ALANS  FILTER.INC using the variable in the udp case

                          ############################

                          #######
                          TEST1
                          udp rule
                          ########

                          NAT Inbound Redirects

                          rdr on vlan1 proto udp from any to 192.168.50.254 port { 161 } -> 10.250.100.129

                          Reflection redirects

                          rdr on $lan proto udp from any to 192.168.50.254 port { 161 } -> 127.0.0.1 port 19000

                          NAT Reflection rules

                          pass in quick on $lan inet proto udp from any to $loopback port 19000 keep state label "NAT REFLECT: Allow traffic to localhost"

                          Inetd conf
                          19000  stream  udp    nowait/0        nobody  /usr/bin/nc nc -u -w 20 10.250.100.129 161

                          ##########

                          TEST 2
                          tcp rules
                          ##########

                          NAT Inbound Redirects

                          rdr on vlan1 proto tcp from any to 192.168.50.254 port { 80 } -> 10.250.100.129

                          Reflection redirects

                          rdr on $lan proto tcp from any to 192.168.50.254 port { 80 } -> 127.0.0.1 port 19002

                          NAT Reflection rules

                          pass in quick on $lan inet proto tcp from any to $loopback port 19001 keep state label "NAT REFLECT: Allow traffic to localhost"

                          Inetd conf
                          19002  stream  tcp    nowait/0        nobody  /usr/bin/nc nc -w 20 10.250.100.129 80

                          ############
                          TEST3
                          tcp - udp rule
                          ############

                          NAT Inbound Redirects

                          rdr on vlan1 proto { tcp udp } from any to 192.168.50.254 port { 123 } -> 10.250.100.129

                          Reflection redirects

                          rdr on $lan proto { tcp udp } from any to 192.168.50.254 port { 123 } -> 127.0.0.1 port 19004

                          NAT Reflection rules

                          pass in quick on $lan inet proto tcp from any to $loopback port 19002 keep state label "NAT REFLECT: Allow traffic to localhost"
                          pass in quick on $lan inet proto udp from any to $loopback port 19002 keep state label "NAT REFLECT: Allow traffic to localhost"

                          Inetd conf
                          19004  stream  tcp/udp nowait/0        nobody  /usr/bin/nc nc -w 20 10.250.100.129 123

                          conculsion it just does not work the way you want it to.
                          ports are not lining up right tcp/udp should use two nc ports and not one.
                          i think you should remove the feature or really look hard at it.

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                          • S
                            sullrich
                            last edited by

                            I will just remove.  I am really tired of reflection.

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                            • S
                              sullrich
                              last edited by

                              I just commited a change to install both tcp and udp entries for reflection.  I am guessing this was the only bug that you are experiencing but its rather hard to tell from re-reading your text.

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                              • A
                                aldo
                                last edited by

                                will check it out again i am getting a little tired of this one now but if you want me to work on it i will
                                let you knwo soon

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                                • A
                                  aldo
                                  last edited by

                                  OK i made three rules 1 udp only 1 tcp only and one tcp/udp

                                  19000  stream  udp    nowait/0        nobody  /usr/bin/nc nc -u -w 20 10.250.100.129 161
                                  19002  stream  tcp    nowait/0        nobody  /usr/bin/nc nc -w 20 10.250.100.129 80
                                  19004  stream  tcp/udp nowait/0        nobody  /usr/bin/nc nc -u -w 20 10.250.100.129 123
                                  19005  stream  tcp/udp nowait/0        nobody  /usr/bin/nc nc -w 20 10.250.100.129 123

                                  NAT Inbound Redirects

                                  rdr on vlan1 proto udp from any to 192.168.50.254 port { 161 } -> 10.250.100.129

                                  Reflection redirects

                                  rdr on $lan proto udp from any to 192.168.50.254 port { 161 } -> 127.0.0.1 port 19000

                                  rdr on vlan1 proto tcp from any to 192.168.50.254 port { 80 } -> 10.250.100.129

                                  Reflection redirects

                                  rdr on $lan proto tcp from any to 192.168.50.254 port { 80 } -> 127.0.0.1 port 19002

                                  rdr on vlan1 proto { tcp udp } from any to 192.168.50.254 port { 123 } -> 10.250.100.129

                                  Reflection redirects

                                  rdr on $lan proto tcp from any to 192.168.50.254 port { 123 } -> 127.0.0.1 port 19004
                                  rdr on $lan proto udp from any to 192.168.50.254 port { 123 } -> 127.0.0.1 port 19005

                                  the rdr rules and the streams reconcile fine. but the localhost rules are messed up

                                  NAT Reflection rules

                                  pass in quick on $lan inet proto udp from any to $loopback port 19000 keep state label "NAT REFLECT: Allow traffic to localhost"
                                  pass in quick on $lan inet proto tcp from any to $loopback port 19001 keep state label "NAT REFLECT: Allow traffic to localhost"
                                  pass in quick on $lan inet proto tcp from any to $loopback port 19002 keep state label "NAT REFLECT: Allow traffic to localhost"
                                  pass in quick on $lan inet proto udp from any to $loopback port 19002 keep state label "NAT REFLECT: Allow traffic to localhost"

                                  as you can see there is nothing on 19001 and on 19002 there should only be tcp and there is nothing on 19003 or 4

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                                  • S
                                    sullrich
                                    last edited by

                                    Alrighty, thanks.  I just commited a fix for this.

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                                    • A
                                      aldo
                                      last edited by

                                      ok will test this now. thanks scott your a hard worker. ::)

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                                      • A
                                        aldo
                                        last edited by

                                        NAT Reflection rules

                                        pass in quick on $lan inet proto udp from any to $loopback port 19000 keep state label "NAT REFLECT: Allow traffic to localhost"
                                        pass in quick on $lan inet proto tcp from any to $loopback port 19001 keep state label "NAT REFLECT: Allow traffic to localhost"
                                        pass in quick on $lan inet proto tcp from any to $loopback port 19002 keep state label "NAT REFLECT: Allow traffic to localhost"
                                        pass in quick on $lan inet proto udp from any to $loopback port 19003 keep state label "NAT REFLECT: Allow traffic to localhost"

                                        the below is same for rdrs and inetd streams

                                        rdr on $lan proto udp from any to 192.168.50.254 port { 161 } -> 127.0.0.1 port 19000
                                        rdr on $lan proto tcp from any to 192.168.50.254 port { 80 } -> 127.0.0.1 port 19002
                                        rdr on $lan proto tcp from any to 192.168.50.254 port { 123 } -> 127.0.0.1 port 19004
                                        rdr on $lan proto udp from any to 192.168.50.254 port { 123 } -> 127.0.0.1 port 19005

                                        19000  stream  udp    nowait/0        nobody  /usr/bin/nc nc -u -w 20 10.250.100.129 161
                                        19002  stream  tcp    nowait/0        nobody  /usr/bin/nc nc -w 20 10.250.100.129 80
                                        19004  stream  tcp/udp nowait/0        nobody  /usr/bin/nc nc -u -w 20 10.250.100.129 123
                                        19005  stream  tcp/udp nowait/0        nobody  /usr/bin/nc nc -w 20 10.250.100.129 123

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                                        • S
                                          sullrich
                                          last edited by

                                          Please test http://cvs.pfsense.com/cgi-bin/cvsweb.cgi/pfSense/etc/inc/filter.inc?rev=1.575.2.260;content-type=text%2Fplain;only_with_tag=RELENG_1

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                                          • A
                                            aldo
                                            last edited by

                                            less /var/etc/inetd.conf

                                            18999  stream  udp    nowait/0        nobody  /usr/bin/nc nc -u -w 20 10.250.100.129 161
                                            19000  stream  tcp    nowait/0        nobody  /usr/bin/nc nc -w 20 10.250.100.129 80
                                            19001  stream  tcp/udp nowait/0        nobody  /usr/bin/nc nc -u -w 20 10.250.100.129 123
                                            19002  stream  tcp/udp nowait/0        nobody  /usr/bin/nc nc -w 20 10.250.100.129 123

                                            NAT Inbound Redirects

                                            rdr on $lan proto udp from any to 192.168.50.254 port { 161 } -> 127.0.0.1 port 18999
                                            rdr on $lan proto tcp from any to 192.168.50.254 port { 80 } -> 127.0.0.1 port 19000
                                            rdr on $lan proto tcp from any to 192.168.50.254 port { 123 } -> 127.0.0.1 port 19001
                                            rdr on $lan proto udp from any to 192.168.50.254 port { 123 } -> 127.0.0.1 port 19002

                                            NAT Reflection rules

                                            pass in quick on $lan inet proto udp from any to $loopback port 19000 keep state  label "NAT REFLECT: Allow traffic to localhost"
                                            pass in quick on $lan inet proto tcp from any to $loopback port 19001 keep state label "NAT REFLECT: Allow traffic to localhost"
                                            pass in quick on $lan inet proto tcp from any to $loopback port 19002 keep state  label "NAT REFLECT: Allow traffic to localhost"
                                            pass in quick on $lan inet proto udp from any to $loopback port 19003 keep state  label "NAT REFLECT: Allow traffic to localhost"

                                            very close now

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