Tag Archives: DSL

Cisco ASA PBR - featured image

Policy Based Routing on a Cisco ASA

Cisco ASA 9.4 (and later) is now supporting Policy Based Routing. Yeah. Great news, since many customers are requesting something like “HTTP traffic to the left – VoIP traffic to the right”. Coming with a new Cisco ASA 5506-X I was happy to try the policy based routing feature.

The configuration steps through the ASDM GUI are not easy and full of errors, so I try to give some hints within this blog post.

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Palo Alto PBF w different VRs featured image

Policy Based Forwarding on a Palo Alto with different Virtual Routers

This guide is a little bit different to my other Policy Based Forwarding blog post because it uses different virtual routers for both ISP connections. This is quite common to have a distinct default route for both providers. So, in order to route certain traffic, e.g., http/https, to another ISP connection, policy based forwarding is used.

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ScreenOS PBF with VRs featured image

Policy-Based Routing on ScreenOS with different Virtual Routers

I already puslished a blog post concerning policy-based routing on a Juniper firewall within the same virtual router (VR). For some reasons, I was not able to configure PBR correctly when using multiple VRs. Now it works. 😉 So, here are the required steps:

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Hop Counts featured image

1&1 DSL Routing: Hop Counts unterschiedlich

Seit ĂŒber einem Jahr zeichne ich die Anzahl der Hops von einer Reihe DSL-AnschlĂŒssen auf (siehe hier). Mein Monitoring-Server lĂ€uft dabei hinter einem statischen Anschluss der Telekom, wĂ€hrend die privaten InternetanschlĂŒsse von diversen Anbietern (1&1, Kabel Deutschland, Telekom) kommen. Nun habe ich leider nicht im Detail die Ahnung davon, wie diese Anbieter ihren Traffic routen, zumindest scheint aber 1&1 irgendetwas Komisches bei sich verbaut zu haben, da sehr oft nach der nĂ€chtlichen Zwangstrennung ein deutlicher Unterschied in der Anzahl der Hops zu sehen ist.

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FortiGate Policy Route featured image

Policy Routing on a FortiGate Firewall

This is a small example on how to configure policy routes (also known as policy-based forwarding or policy-based routing) on a Fortinet firewall, which is really simple at all. Only one single configuration page and you’re done. 😉

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Ping DSL vs. Glasfaser featured image

Ping Times/Latency: DSL vs. Glasfaser, IPv4 vs. IPv6

Seit wenigen Tagen bin ich glĂŒcklicher Kunde eines Telekom Glasfaseranschlusses. Mit satten 50/10 MBit/s rasen die Daten bei mir ein und aus. Neben der deutlich höheren Geschwindigkeit war ich aber auch an den Latenzen der beiden AnschlĂŒsse interessiert und habe entsprechende Tests gemacht. Hier kommen die Ergebnisse.

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Ping-Zeiten der FRITZ!Box unter Netzwerklast - featured image

Ping-Zeiten der FRITZ!Box unter (Netzwerk-) Last

Hier kommen zwei interessante Graphen von der AVM FRITZ!Box, welche mit einem gÀngigen DSL-Anschluss im Internet hÀngt:

  1. Traffic in Richtung Internet mit einem Peak beim Upload
  2. Ping-Antwortzeiten des internen Interfaces mit einem noch viel höherem Peak wÀhrend des Uploads

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Schnellere DSL Synchronisierung featured image

Schnellere DSL Synchronisierung mit neuerer FRITZ!Box

Vor einiger Zeit habe ich bei einem Bekannten eine AVM FRITZ!Box ausgetauscht: Die etwas betagte 7050 musste einer 7170 weichen. Wie immer wurde per Screenshots alles dokumentiert. Erfreulicherweise war die DSL Synchronisierung am exakt gleichen Anschluss danach um einiges höher. Anstatt 7 MBit/s im Download bekam man jetzt 11 MBit/s!

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SSG PBR

Policy-Based Routing (PBR) on a Juniper ScreenOS Firewall

Here comes an example on how to configure policy-based routing (PBR) on a Juniper ScreenOS firewall. The requirement at the customers site was to forward all http and https connections through a cheap but fast DSL Internet connection while the business relevant applications (mail, VoIP, ftp, …) should rely on the reliable ISP connection with static IPv4 addresses. I am showing the five relevant menus to configure PBR on the ScreenOS GUI.

[UPDATE] I later on wrote an article with policy-based routing with two different virtual routers. See it here.[/UPDATE]

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PA PBF

Policy Based Forwarding (PBF) on a Palo Alto Firewall

This is a small example on how to configure policy based forwarding (PBF) on a Palo Alto Networks firewall. The use case was to route all user generated http and https traffic through a cheap ADSL connection while all other business traffic is routed as normal through the better SDSL connection. Since I ran into two problems with this simple scenario, I am showing the solutions here.

[UPDATE] I also wrote an article about policy based forwarding with two different virtual routers on the Palo Alto firewall. See it here.[/UPDATE]

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