CLAMPMSS=1300 Give it a try you have an issue with MTU discovery
On Tue, May 12, 2020 at 8:08 PM Boris <bo...@cation.de> wrote: > Am 12.05.20 um 19:04 schrieb Erich Titl: > > Hi Boris > > > > Am 12.05.2020 um 18:59 schrieb Boris: > >> Am 12.05.20 um 18:51 schrieb Erich Titl: > >>> Hi Boris > >>> > >>> Am 12.05.2020 um 18:46 schrieb Boris: > >>>> Am 12.05.20 um 18:32 schrieb Erich Titl: > >>>>> Hi Boris > >>>>> > >>>>> Am 12.05.2020 um 17:17 schrieb Boris: > >>>>>> Hej Erich and Sassy, > >>>>>> hej list, > >>>>>> > >>>>> .... > >>>>> > >>>>>>> > >>>>>>> Yes and one suggestion in FAQ77 suggests the same. > >>>>>>> > >>>>>> > >>>>>> Wow, what a success! Thank you so very much! That was the key! > >>>>>> I wrote the two sip-helpers in DONT_LOAD in shorewall.conf and the > >>>>>> phonecall work just perfect! > >>>>> > >>>>> Good > >>>>> > >>>>>> > >>>>>> Now the last issue is receiving the mail.... > >>>>>> In this case pop3s is used and the traffic is redirected to a > different > >>>>>> port as well. Is there another helper to be disabled?? > >>>>>> > >>>>> > >>>>> Let us know more details about your pop3 problem. > >>>>> > >>>> > >>>> Hello Erich, > >>>> > >>>> well, the VoIP is a great success! > >>>> > >>>> BUT now as we make further checks, we find _some_ silly behaviour: > >>>> > >>>> 1. It's not possible to send mail via 1und1 but via t-online. > >>>> Thunderbird tells 'connected to smtp.1und1.de' but after a minute or > so > >>>> there is a timeout. Same with receiving mail at pop.1und1.de. > >>>> > >>>> 2. It's not possible to visit at least one Website: wieistmeineip.de > >>> > >>> Have a look at you MTU size, you may need to twiddle that a little. > >>> > >> > >> MTU is set to 1492 . > >> I thought 1500 is default?? > >> > > > > ppp is different. > > > > What is your entry in shorewall.conf > > > > CLAMPMSS=Yes > > > > Current setting is > > CLAMPMSS=No > > I'll try to switch.... > > Boris > > > _______________________________________________ > Shorewall-users mailing list > Shorewall-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/shorewall-users > -- Regards, Sassy Natan 972-(0)54-2203702
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