Greetings,
I have an interesting difficulty. I want to be able to grab a multicast
stream from a machine (192.168.12.13) and forward/rebroadcast/rewrite
it, such that the packets seem to come from my DMZ host (192.168.12.12).
I have been trying an iptables solution, but that doesn't seem to be
working at the moment, and it was recommended to me by j_engelh on the
#iptables channel to ask at this address for further assistance.
Thank you for your time and effort on my behalf.
-dkap
Below is three representative packets:
U 192.168.12.13:6970 -> 224.0.1.20:6990
...@.7..........U`c.|?...^v/9.....?.....E......{.......^../..W....o.Q..;...
....:'.S.~.....fv.......1xe................y...|Q.....3.@.u..........=.....
.^0.........0.B.`.^............{../.....B..UY....Z.....Te....H........^....
.'...._..<.!..^b/7.....b..3.s.."....X......B.NL&...*.V..C.../|^o.T@......O.
=.7..Nc...R....Vku...X8.`8A$.....]..Qy8......[...)3x./.?.n.......qy.
#
U 192.168.12.13:6970 -> 224.0.1.20:6990
...A.7..........U.S.}..../;......b..........fN.........O.^0.cA..t...b._W...
./.:/......D..X^5.1....^.y'./.$.Z....-*..r.`.<^I...x...+.......-SVa.....N..
...;.]...=.......lJ..mO...<o.u"......2....I6. ./:/</5.y.^t/.YX..._O.....F..
...\...V...............y.x.p^...0X....q~..^w.......D...C..h.M...,../..o.b1.
pN/.|^L*....B."v/w......!.8......p.0$D.+c.Qx1._.@...{ ..5....Y._.8.........
.h._.............f..R..^.yIP......L.d+.8.......8....?.xV.>....J.CfZ..1..p*.
88Z.f.....@ ./'........:.c..0..:E.aO...B.h.....P.....r........T....%..K....
@J~...{...`q.q.g9J..PK....4-..kM.b..|..{....._.. GT..|........1y4^.........
./....
#
U 192.168.12.13:6970 -> 224.0.1.20:6990
.`.B.7.u....... ....$. ...h.H...X ........`.....4Z.z....v..Gw...~..|.......
T...hc...Q..knj7Y.`....|6%..LpS...wt.....s.|{i.}.....y.P5....(..q.e;.Z.H...
8O..nH.iw...t..I.....<.....&......y6..,b...Tk..k^.Z._.S./.Ny..C}.9cu..0...q
O.........R.z:.u..-L..}.rPV.6.x.P....O.....?.....?..NO..?'..\...V.:....lp.!
..W..iar...B.aD.....^.....B.!..KXK...f....u....^:VEa|g.O...apq........~..%.
...%....d......y....P.Tz.....-..|.3...U@u.<b....P.^AMV.....U..D.u..n.......
rj.*F..t...O.u A`:.@.......x....*gA.Fv.c`......2%'...[Z.FWJ.I...2.FV...VS..
G....69....W)]...W.E...O*......R......S..F...Ug...Y.}..p...U.......Z.5.....
r.i...FT%C....n.%.Uu&!.j.).7.3.....V'j.....?..D.pl..h->@Z...Z...7...y......
..$.$\......e.@.$*.h.{'......EE|.2z.+z.5....x....ul..@.4.$G.....r..N.<bp<c.
....P......-.?..P....O....:..t......&....L.t..ggu'%........Nuq5'....N>.q.uD
1..W...I....,^....5.`......z.o.......3.V...r...QEf...v...!..x.x..<4.?.e.1.]
S..IJ...0 ......P.......x..i-....* .a8.A7........R..l2U.......e4t.g.......p
..aw....e......H.c.....h*...d.}....aK..........P...(...De..V...c.....PF...8
......@xxxx'....\..G..~x.F^/fl.0...TY...g.<..)L9.MR...d.S8.QF.%...z.....0.^
...........5...............GlYT.^#c.L.._Ur..\\..;r%^.*.M@..5H.T.o.s...2..T.
.g...?..b......?FwR.M....s...NN..h..&~.....".<.F.&.uN..=..........pb4U.....
p..5......&.4.L.p-.C.oB..C...%^].e.`..#......6..z.2......2...<.h0a....E")..
.v.@.@M..t......0DS.L0.=O.}M6$Mf..."....1j..-.#Yi....a.3#...i.>.....}^.W...
.)C.JL...... .q...F....ss..S...1.)L!.C.fh\...V.
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