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    Nat reflection and udp

    Scheduled Pinned Locked Moved NAT
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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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                                  • S
                                    sullrich
                                    last edited by

                                    Commited.  Either search filter.inc for 18999 and change to 19000 or update to the latest RELENG_1 file.

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                                    • A
                                      aldo
                                      last edited by

                                      ok works but only change the first instance to 19000 leave the second one at 18999

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                                      • S
                                        sullrich
                                        last edited by

                                        Woops.  Please test my latest filter.inc:

                                        http://cvs.pfsense.com/cgi-bin/cvsweb.cgi/pfSense/etc/inc/filter.inc?rev=1.575.2.262;content-type=text%2Fplain;only_with_tag=RELENG_1

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