> >Cum pot verifica de la client (windows) ca pot trece prin firewall prin > >porturile 5000 si 5001 pe TCP si UDP? > > > > > > In timp ce se face conexiunea: > netstat -an > Trebuie sa apara porturile 5000... > > sau pe server, din contul de root: > tcpdump port 5000
Am dat un telnet de pe masina windows la un server de voice chat de la yahoo (66.218.70.32) si am ascultat cu tcpdump_ul pe cele doua interfete si pe portul 5000 sa vad daca trece prin firewall semnalul. Iata rezultatul: > tcpdump -i eth0 port 5000 08:15:14.775351 aaa.dmhi.ct.ro.1224 > v1.vc.scd.yahoo.com.5000: R 905550:905550(0) win 0 (DF) [tos 0x34] 08:15:26.406132 aaa.dmhi.ct.ro.1229 > v1.vc.scd.yahoo.com.5000: S 980947:980947(0) win 8192 <mss 1460,nop,wscale 0,nop,nop,timestamp 0 0,nop,nop,sackOK> (DF) [tos 0x3a,ECT] 08:15:26.620476 v1.vc.scd.yahoo.com.5000 > aaa.dmhi.ct.ro.1229: S 3721030681:3721030681(0) ack 980948 win 65535 <mss 1460,nop,wscale 1,nop,nop,timestamp 2422070938 0> [tos 0x80] 08:15:26.620782 aaa.dmhi.ct.ro.1229 > v1.vc.scd.yahoo.com.5000: . ack 1 win 8760 <nop,nop,timestamp 8986 2422070938> (DF) [tos 0x3a,ECT] 08:15:32.064243 aaa.dmhi.ct.ro.1229 > v1.vc.scd.yahoo.com.5000: F 1:1(0) ack 1 win 8760 <nop,nop,timestamp 9038 2422070938> (DF) [tos 0x3a,ECT] 08:15:32.279510 v1.vc.scd.yahoo.com.5000 > aaa.dmhi.ct.ro.1229: . ack 2 win 32767 <nop,nop,timestamp 2422071504 9038> (DF) [tos 0x80] 08:15:32.290173 v1.vc.scd.yahoo.com.5000 > aaa.dmhi.ct.ro.1229: F 1:1(0) ack 2 win 32767 <nop,nop,timestamp 2422071504 9038> (DF) [tos 0x80] 08:15:32.290495 aaa.dmhi.ct.ro.1229 > v1.vc.scd.yahoo.com.5000: . ack 2 win 8760 <nop,nop,timestamp 9040 2422071504> (DF) [tos 0x3a,ECT] > tcpdump -i eth1 port 5000 08:19:46.900061 193.226.151.64.1249 > v1.vc.scd.yahoo.com.5000: S 1241455:1241455(0) win 8192 <mss 1460,nop,wscale 0,nop,nop,timestamp 0 0,nop,nop,sackOK> (DF) [tos 0x28] 08:19:47.168030 v1.vc.scd.yahoo.com.5000 > 193.226.151.64.1249: S 3853681846:3853681846(0) ack 1241456 win 65535 <mss 1460,nop,wscale 1,nop,nop,timestamp 2422096985 0> [tos 0x80] 08:19:47.168406 193.226.151.64.1249 > v1.vc.scd.yahoo.com.5000: . ack 1 win 8760 <nop,nop,timestamp 11571 2422096985> (DF) [tos 0x28] Intrebari: 1)Este bine asa cum arata (trece semnalul prin firewall)? 2)Cum trebuie setata conecsiunea la messenger ca sa apara si optiunea voice chat? --- Detalii despre listele noastre de mail: http://www.lug.ro/
