Date: Tue, 25 Apr 2023 11:16:29 GMT From: Eugene Grosbein <eugen@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 9f5dc374d0da - main - ipfw.8: improve description for interface matching Message-ID: <202304251116.33PBGTBu013180@gitrepo.freebsd.org>
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The branch main has been updated by eugen: URL: https://cgit.FreeBSD.org/src/commit/?id=9f5dc374d0dadb6947a9bd9ff8ff44931e1b6422 commit 9f5dc374d0dadb6947a9bd9ff8ff44931e1b6422 Author: Eugene Grosbein <eugen@FreeBSD.org> AuthorDate: 2023-04-25 11:12:11 +0000 Commit: Eugene Grosbein <eugen@FreeBSD.org> CommitDate: 2023-04-25 11:16:22 +0000 ipfw.8: improve description for interface matching The manual describes "if*" form only while kernel uses fnmatch(3) and allows use for more versatile shell-like patterns. Note that explicitly and provide an example. MFC after: 3 days --- sbin/ipfw/ipfw.8 | 26 ++++++++++++++++++++++---- 1 file changed, 22 insertions(+), 4 deletions(-) diff --git a/sbin/ipfw/ipfw.8 b/sbin/ipfw/ipfw.8 index ef66f89a4d89..884797304b78 100644 --- a/sbin/ipfw/ipfw.8 +++ b/sbin/ipfw/ipfw.8 @@ -1,7 +1,7 @@ .\" .\" $FreeBSD$ .\" -.Dd January 25, 2023 +.Dd April 25, 2023 .Dt IPFW 8 .Os .Sh NAME @@ -1918,13 +1918,24 @@ However, this option doesn't imply an implicit .Cm check-state in contrast to .Cm keep-state . -.It Cm recv | xmit | via Brq Ar ifX | Ar if Ns Cm * | Ar table Ns Po Ar name Ns Oo , Ns Ar value Oc Pc | Ar ipno | Ar any +.It Cm recv | xmit | via Brq Ar ifX | Ar ifmask | Ar table Ns Po Ar name Ns Oo , Ns Ar value Oc Pc | Ar ipno | Ar any Matches packets received, transmitted or going through, respectively, the interface specified by exact name .Po Ar ifX Pc , -by device name -.Po Ar if* Pc , +by device mask +.Po Ar ifmask Pc , by IP address, or through some interface. +.Pp +Interface +name may be matched against +.Ar ifmask +with +.Xr fnmatch 3 +according to the rules used by the shell (f.e. tun*). +See also the +.Sx EXAMPLES +section. +.Pp Table .Ar name may be used to match interface by its kernel ifindex. @@ -4223,6 +4234,12 @@ of clients, as below: .Dl "ipfw add deny ip from ${badguys} to any" .Dl "... normal policies ..." .Pp +Allow any transit packets coming from single vlan 10 and +going out to vlans 100-1000: +.Pp +.Dl "ipfw add 10 allow out recv vlan10 \e" +.Dl "{ xmit vlan1000 or xmit \*qvlan[1-9]??\*q }" +.Pp The .Cm verrevpath option could be used to do automated anti-spoofing by adding the @@ -4746,6 +4763,7 @@ can be changed in a similar way as for .Sh SEE ALSO .Xr cpp 1 , .Xr m4 1 , +.Xr fnmatch 3 , .Xr altq 4 , .Xr divert 4 , .Xr dummynet 4 ,
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