Re: looking for help from ppp users
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On 03/12/2012, at 9:49, Eitan Adler <lists@eitanadler.com> wrote:
> I'm working on a project to review the FAQ: =
http://wiki.freebsd.org/ThwackAFAQ
>=20
> I need volunteers to question through the questions starting "userppp"
> through "desperation" and review them. If you don't have time to go
> through them all, just pick one and make this a group process.
>=20
> Is it factually correct?
> Does it use deprecated functionality?
> Is it completely outdated to the point we should remove it?
> Does it need better examples?
> Is it clear and concise?
> Typos and spelling mistakes
>=20
> It isn't that hard and would be a great help!
14.6 should probably read..
If you have Link Quality Reporting (LQR) configured, it is possible that =
too many LQR packets are lost between your machine and the peer. The =
ppp(8) program deduces that the line must therefore be bad, and =
disconnects. Prior to FreeBSD version 2.2.5, LQR was enabled by default. =
It is now disabled by default. LQR can be enabled with the following =
line:
enable lqr
[ie demonstrate how to enable it since it's off by default]
Is Brian Somers still a FreeBSD committer? Section 14.9 has his email =
address and suggests you contact him under some circumstances.
I would delete 14.11 because openmode is now the default and 14.12 =
mentions how and why you should disable it.
Section 14.20 says that PPP doesn't dump core because it is run as root, =
this is incorrect - it doesn't dump core because it is set UID.
Section 14.22 could basically be replaced with "use 'nat same_ports =
yes'", or suggest the user use PF for NAT and run the miniupnpd port. =
Certainly these days games (and every other network app) are much more =
NAT savvy due to its prevalence.
I would also add a section about MTU - I expect the dominant use case =
for PPP is ADSL these days. In this case the MTU is usually limited to =
1492 bytes (1500 byte ethernet frame minus PPP framing overhead). If all =
ICMP is blocked at some part of the link then packet fragmentation =
doesn't work properly and you end up with symptoms like interactive SSH =
logins work but bulk SCP or FTPs don't.
I hope that helps!
--
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
-- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
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