What is Firewall?

Remy_3D

What is a firewall?
A simplified explanation
Published: 11-May-2001

A firewall protects your network from unwanted Internet traffic. The primary functions of a firewall are to let good traffic pass through while 慴ad

takder ker software yg leh bypass firewall nie

TRUNASUCI

napa nak bypass?

Originally posted by TRUNASUCI at 2004-2-19 11:22 AM:
napa nak bypass?

kena kasi reason ker

Fast-N-Furious

Biasanya, standard firewall akan cover macam out of bound packet attack, contohnyer larr, jadi utk ko by pass firewall nie, ko kena lalu dengan tiada unsur-unsur attack yang telah disetkan oleh user, kita kena la cari, tapi ambil masa sket la, sebab user pong takbleh nak block everthing, mesti dier ader set setting yang buleh get through. Melalui certain setting nie ler kita by pass, lepas by pass buleh ler hack.. gitu ler kisahnya secara gambarannyer.

TRUNASUCI

disetkan oleh user?
ke admin system? atau network? setau aku user le kene ikut firewall filtering rules.. macam lalu ikut proxy atau DMZ

bobok

tak payah pakai software. utk firewall tanpa NAT, just spoof packet header letak source address 127.0.0.2 sampai 127.0.0.254. lepas punya lah.

Originally posted by kayuapi at 2004-2-19 08:23 AM:
takder ker software yg leh bypass firewall nie

Originally posted by TRUNASUCI at 2004-2-19 03:26 PM:
disetkan oleh user?
ke admin system? atau network? setau aku user le kene ikut firewall filtering rules.. macam lalu ikut proxy atau DMZ

hmmm aper yg ko cakap nie memang betui... terunasuci... tapi dlm kes nak bypass firewall... takkan ler server nak setkan user supaya leh lepas firewall dia... (walaupun boleh tapi pelik kalau penjaga server tu baik atie wat cam ko cakap nie)

Originally posted by bobok at 19-2-2004 11:28 PM:
tak payah pakai software. utk firewall tanpa NAT, just spoof packet header letak source address 127.0.0.2 sampai 127.0.0.254. lepas punya lah.

firewall? spoof packet lepas?? sape nye firewall haa??? nat??

Remy_3D

Originally posted by MaUi^ at Fri 20th Feb 04 08:30:
firewall? spoof packet lepas?? sape nye firewall haa??? nat??

hehe... aku baru perasan location ko....
lawak betui ko nie.... :nana::nana::nana::nana:

TRUNASUCI

just spoof packet header letak source address 127.0.0.2 sampai 127.0.0.254. lepas punya lah.

tell me how

hmmm aper yg ko cakap nie memang betui... terunasuci... tapi dlm kes nak bypass firewall... takkan ler server nak setkan user supaya leh lepas firewall dia... (walaupun boleh tapi pelik kalau penjaga server tu baik atie wat cam ko cakap nie)

so berbalik topic asal, nih tukas "penjaga server" atau admin..
dan kalau user nak lepas mende tuh how? tuh yg aku nak dengar pendapat masing2...

Originally posted by Remy_3D at 20-2-2004 08:33 AM:
hehe... aku baru perasan location ko....
lawak betui ko nie.... :nana::nana::nana::nana:

kenape?? takk pecayeeee keeeeeeeeeeeeeee.....?

Originally posted by TRUNASUCI at 2004-2-20 10:44 AM:
tell me how


so berbalik topic asal, nih tukas "penjaga server" atau admin..
dan kalau user nak lepas mende tuh how? tuh yg aku nak dengar pendapat masing2...

tu yg sedang aku perkatakan pasal bypass firewall nie..

bypass firewall? biasa mana2 firewall akan allow client/pengguna menggunakan port 80 (untuk internet surfing), so try guna program bertajuk http-tunnel (wind0ws) untuk melarikan program2 seperti mirc, icq, kaaza atau apa2 yg korang nak gune yang disekat oleh firewall dengan melalui port 80 yang di allow tadi, lebih lanjut sila menyelam ke http://www.http-tunnel.com

Remy_3D

menyelam sambil minum air sarsi MaUi^

senahsirap

iskk rugi betuii.aku baru je abih present ament aku tentang firewall ni..kalo tak leh ambik sikit bahan kat sini....

budak_kampung

Originally posted by MaUi^ at 2004-2-20 17:02:
bypass firewall? biasa mana2 firewall akan allow client/pengguna menggunakan port 80 (untuk internet surfing), so try guna program bertajuk http-tunnel (wind0ws) untuk melarikan program2 seperti mi ...

baru nak nyelam dah kena block dah...

anisya

mmm, nak tanya pasal firewall ni..... more on firewall appliance lah... penah dengar clavister firewall? steelgate borderware firewall? dan secui samsung firewall ? boleh beri pandangan tak, di antara 3 firewall ni mana yg paling best? in terms of performance, security and ease of management....
tolong yek....bagi comparison.....

TQ.

H猷L鰃頧

Nak buat spoof packet header memang boleh, upload bandwith+ping mesti laju. Lebih kurang macam spamming data samapai host/target tak terlayan sampai cpu utilization meningkat. Tapi masih boleh diblock & diterminate'kan oleh firewall tertentu

Agakbahya, tapi takat spamming je sampai hang je

karim_pin

Originally posted by H猷L鰃頧 at 30-5-2005 02:55 PM:
Nak buat spoof packet header memang boleh, upload bandwith+ping mesti laju. Lebih kurang macam spamming data samapai host/target tak terlayan sampai cpu utilization meningkat. Tapi masih boleh dibl ...

Kebanyakan oran buat ingress/egress filtering. By the default banyak firewall block 127.*/192.*/10.* pada incoming interface.