Profile

Project Profile

07/18 – 03/19
Freelancer Network
- 2nd and 3rd Level Support
- Migration of huge national network
Used Software
IOS, IOS-XR, IOS-XE
Used Routingprotocols
static-routing, BGP
Used Hardware
- Ethernet-Encoders
- Cisco Router ASR9k, ASR1k
- Cisco Catalyst Switches 38xx
03/18 – 06/18
Freelancer Security
- 2nd and 3rd Level Support
- Operating / Management Firewall System
- TAC Case Owner Cisco
Used Software
R77, IOS 9.x, GA 5.4.x
Management Firewall Systems
- GAIA, Provider-1
- CSM, ASDM
- Fortigate
Add-on software monitoring / management / ticket system
- HP Service-Center
- Splunk
Used Techniques
Anyconnect dual (User- / Machine-) cert. authentication, Site-2-Site VPN, NAT, IKEv1/2
Used Routingprotocols
static-routing
Used Hardware
- CheckPoint Firewall
- Cisco Firewall: 55×0-x
- Fortigate
09/17 – 02/18
Freelancer Security
- 2nd and 3rd Level Support
- Design new services (e.g. ISE)
- Migration ACE – ISE
- ITIL process revised / new definition
- Planning / Migration / Outsourcing Managed Service
- Steering / escalation external partner (managed service)
- Go-Live / Troubleshooting foreign location
- TAC Case Owner Cisco
Used Software
R77, R80, IOS 9.x
Management Firewall Systems
- GAIA, Provider-1
- CSM, ASDM
Add-on software monitoring / management / ticket system
- Solarwinds
- eHealth
Used Techniques
Anyconnect, Site-2-Site VPN, NAT, spec. AD authentication, IKEv1/2
Used Routingprotocols
OSPF
Used Hardware
- CheckPoint Firewall: 12000
- Cisco Firewall: 55×0-x
Used measurement devices
TCPdump, Wireshark
03/17 – 12/17
Freelancer Network Engineering and Security
- Design / Roll-out WAN-LISP network all over the world
- Design / Conception Site-2-Site VPN (Primary / Backup / IKEv1/2)
- Go-Live / migration LISP Network
- Connect foreign companies via S-2-S Tunnel all over the world
- 3rd Level Troubleshooting
- Direct contact person for the end customer
- Training / Workshop employees / customer
- TAC Case Owner
Used Software
- IOS, IOS-XR, IOS-XE
- Safenet (dual factor authentication)
- FMC
- Anyconnect
Used Techniques
SDN, APIC, IP-SLA, floating static routes, Tracking
Used Routingprotocols
LISP, OSPF
Used Hardware
- Cisco Router: ISR 4xxx, ASR 1xxx
- Cisco Switch: 65xx, 3750, 3850, 2960
- Cisco Source Fire Modul
Used measurement devices
Wireshark
01/17 – 03/17
Freelancer Network Engineering and Security
- Verification design / engineering DataCenter
- 2nd and 3rd Level Support LAN / Security FW
- Engineering / Design 802.1x
- PoC ACS / ISE
- PoC Windows Server / ISE
Used Software
NX-OS, IOS, PAN-OS
Management Firewall Systems
Panorama
Add-on software monitoring / management / ticket system
- Solarwinds
- eHealth
Used Techniques
VSS, vPC, virtualization, FEX, 802.1x IPtables
Used Routingprotocols
OSPF, Static-routing
Used Hardware
- PaloAlto: PA-200/500/3020i
- Cisco Switch: 65xx, 3750, 3850, N2K, N5K, N9K
- Windows 2008 R2 Radius
- Cisco ISE
12/14 – 12/16
Freelancer Network Engineering VPN / IP Design
- Verification of technical concepts
- Build customer special solutions
- CPE / PE customer connection
- Engineering / Design IPv6 Provider Backbone
- PoC Test IPv6 end customer
- Connect / troubleshoot different ISP providers to the backbone
- Engineering / troubleshoot / implementing SIP Primary / Backup
- Tests with Spirent measurement
- 3rd Level Troubleshooting L2VPN, L3VPN
- Router count > 3000
Used Software
IOS, IOS-XR, IOS-XE, Junos, Cacti
Used Techniques
from the provider segment, like BFD Multihop, VRF, SIP, IPv6
Used Routingprotocols
OSPF, BGP, EIGRP, Static-routing, MPLS
Used Hardware
- Huawei
- Cisco Switch: CPEs like 4xxx, PEs like ASR9000
- Juniper MX
Used measurement devices
- Chariot
- Spirent
04/14 – 04/15
Freelancer Network Design / Implementation / Analysis
Used Techniques
vPC, FEX, VSS
Used Routingprotocols
OSPF, BGP, EIGRP, Static-routing
Used Hardware
- Nexus Switch: 7K, 5K, 2K, 1Kv
- Cisco Switch: 650x, 450x, 3750x, 2960
05/13 – 03/14
Freelancer Datacenter, Second Level Support Firewalling and Loadbalancer
Used Software
- Management Firewall Systems
  Juniper: Junos (Space); Junos Network and Security Manager (NSM)
  Checkpoint: Provider One R75.40, Provider One R77
- Troubleshooting / Firewall Monitoring
  Juniper Security Threat Response Manager (STRM)
  algosec
  Big Brother (SNMP-Tool)
  MRTG (statistics)
  Valuemation (Syslog-Server)
Used Hardware
- Loadbalancer
  Radware: ODS 1, ODS 3xl
  Alteon: 5412xl
  F5 BigIP 5200, 10200
- Firewall Juniper
  SRX550, SRX 1400, SRX 5800, ISG 2000
  approx. 20 Cluster
- Firewall Checkpoint
  IP 290, IP 1220, IP 1260, IP 1280, IP 2250, IP 2450, CP21400
  VSX
  approx. 80 Cluster
04/11 – 04/13
Member of the operating team as well as the engineering team
- Conception / redesign L2/L3 core backbone at the datacenter
- Implementing / design OSPF routing at the datacenter
- Implementing / design of routing regarding provider change
- MPLS moves with their foreign companies
- Conception / design / implementing of VSS
- Redesign different firewall DMZ
- Lan2Lan IPsec tunnels between foreign companies
- 2nd / 3rd level troubleshooting all over the company
- Administration BlueCoat Proxy
- Network support and design for a business-critical company application (MCH)
- Re-engineering / development of internal process rules (such as fw-process structures)
Used Techniques
IPsec, NetFlow, QoS, SNMP, HSRP, VRRP, 80x.xx, VSS
Used Routingprotocols
static-routing, OSPF, BGP
Used Hardware
- Cisco 3560x-xx – 3750x-xx
- Cisco 650x
- PIX / ASA 5xx, 55xx
- Palo Alto
- BlueCoat Proxy 310, 8100
09/10 – 03/11
Member of the customer engineering team
- Proof of concepts
- Design of special network requirements
- Design of Layer 2 Spirent templates
- 3rd level troubleshooting
- > 3000 Router
Used Techniques
IPsec, NTP, SNMP, HSRP, 80x.xx
Used Routingprotocols
static-routing, OSPF, BGP, MPLS, IS-IS, L2TP
Used Hardware
- Cisco 8xx – 720x
- Cisco 100x – ASR
- Cisco 120xx
Used measurement devices
- Chariot
- Spirent
01/10 – 09/10
Member of the customer engineering team
- Technical leadership for router rollout at one German federal state
- Design and implementation of special IPsec-PKI network requirements
- Employee training and workshops for new technologies
- 3rd level troubleshooting
- > 2000 Router
Used Techniques
IPsec, PKI, open PKI, Netflow, NTP, SNMP, HSRP, EEM
Used Routingprotocols
static-routing, EIGRP, OSPF, BGP, MPLS
Used Hardware
- Cisco 8xx – 720x
- Cisco 100x – ASR
- Cisco 65xx
08/09 – 12/09
Responsible Firewall / Security international Datacenter
- Re-engineer security concept Datacenter
- Administration Firewall
- Optimize Firewall rule set
- 3rd level troubleshooting
Used Techniques
FWSM, CheckPoint Provider-One, CSM, ASDM, AlgoSec
Used Routingprotocols
static-routing, OSPF, BGP, MPLS
Used Hardware
- Nokia Firewall
- Cisco 5xxx ASA Firewall
- Cisco 65xx
01/06 – 07/09
- Responsible remote-access overall
- Responsible Middle East area
- Responsible Italy, Spain area
- Responsible connecting support companies
- Design and implementation WLAN networks
- Connecting support companies all over the world to the company network
- Project planning, cost analyses, execution (installation) of own projects
- Troubleshooting overall
- Reproducing technical failures
- Development / handover of concept documents
- Verification of new concepts
- Performance measurement and evaluation of new hardware
- Campus-design, Campus-MPLS
- Datacenter redesign
- Troubleshooting and administration CheckPoint / PIX-ASA firewalls
- MPLS connection of European branch offices and subsidiaries
- 3rd level support
- Create requirement definitions and system specifications
- Employee training and workshops for new technologies
Used Techniques
R-STP, STP, VRRP, PPP, NAT, SNMP, ACL´s, HSRP, QoS, IPsec, DMVPN, 802.1x, NAC, TACACS, RADIUS, CWSI, iperf, NTP, FWSM
Used Routingprotocols
EIGRP, OSPF, BGP, MBGP, RIPv1/2, static-routing, floating static routing, Multicast-routing, MPLS
Used Interfaces
PRI, BRI, ATM, popular LAN Interfaces etc.
Used Hardware
- Cisco Switch: 29xx, 35xx, 38xx, 4x0x, 65xx
- Cisco Router: 836 – 72xx
- Cisco Concentrator: 3x0x
- Cisco FW: PIX 5xx, ASA
- Cisco Contentswitching: CSS 12xxx
- Cisco Access-Point: AP 12xx
- Cisco WLAN Controller: 4400
- Cisco Remote Access: ACS
- RSA: ACE Server
- DTAG: IPASS Server
11/04 – 12/05
Member of the CET (customer engineering) Team
- Customer solution / connection to the MPLS network
- Responsible for my own customer projects
- Contact person for internal employees and customers
- Treatment of SBR´s (special business request)
- Testing, compiling and implementation of special customer configurations / problems at the lab
Used Techniques
HSRP, mppp, FRF.16, loadsharing, ISDN Backup, Multi-VPN, QoS
Used Routingprotocols
EIGRP, OSPF, (M)BGP, RIPv2, static routing, floating static routing
Used Interfaces
POS, ChSTM-1, E1-E3, PRI, BRI, T1, ATM, etc.
Used Hardware
- Cisco Switch: 35xx, 4x0x, 65xx
- Cisco Router: 836 – 76xx
- Juniper Router: M10, M40, M320
10/04 – 11/04
- Troubleshooting at the LAN / WAN
- 3rd level Support
- Re-Design of Vlan structure
- Re-Design of Routing structure
- Re-Design of OBM (out-of-band management) structure
- Employee training
- Contact person to Cisco Systems
Used Techniques
HSRP, Channeling, Vlan-trunking
Used Routingprotocols
EIGRP
Used Hardware
- Cisco Switch: 35xx, 4x0x, 65xx
07/04 – 10/04
- Troubleshooting and verification of MPLS customer problems at test labs, also finding solutions in terms of QoS (LLQ, WRED etc.)
- Part Re-Design of BGP-4 Backbone (Manchester BB)
- Part Re-Design of OSPF network (Abbey Bank)
- Multicast network Re-Design (Abbey Bank)
- Re-Design of HSRP with Radius authentication for about 1 Mio users (xDSL users)
- Troubleshooting BGP-4 and OSPF
- Measurement of VoIP packets in a test lab regarding jitter, echo, performance (21´st century network)
- Contact person to Cisco Systems
Used Techniques
LLQ, HSRP, MPLS
Used Routingprotocols
OSPF, BGP-4, MOSPF, MP-BGP
Used Hardware
- Cisco Switch: 35xx, 4x0x, 65xx
- Cisco Router: 120xx, 7507, 720x, 38xx, 37xx, 26xx
08/03 – 07/04
- 3rd level support (data team) for the world's largest voice-over-IP project, including RTR analysis and on-site measuring with analysers like WaGo Domino and Expert Sniffer
- Development and implementation of QoS (LLQ) for lines like ISDN-BRI/-PRI/ATM/S2M on Cisco routers and switches
- RTP and cRTP configuration on lines like ISDN BRI
- Development and implementation of a backup scenario in case of line failure (dial-in router over ISDN PRI; connecting B-channels with higher performance)
- Development and implementation of a backup scenario in case of routing failure (OSPF, BGP-4)
- Optimize L2/3 protocol timers
- Last escalation to Cisco Systems; case owner and contact person to Cisco Systems
Used Techniques
LLQ, HSRP, Radius, Ether-Channeling, ISDN Backup, RTR Analyse via eHealth, Domino Analysen etc.
Used Routingprotocols
OSPF, BGP-4
Used Hardware
- Cisco Switch: 35xx
- Router: 7507, 7206, 3745, 3660, 2610, 1760, 827
04/03 – 08/03
- Technical project management for the internal company bank (choice of Cisco products, firewall hardware, bid proposal management, project planning, control of costs etc.)
- Design, configuration and build of a new LAN (Ethernet) / WAN (T-DSL-ISDN/VPN) area
- Build-up of LAN / WAN DMZ´s
- Build-up of VPN / IPsec connections with ISDN backup
- Configuration, consulting and implementation of SNA-over-DSL in 190 remote offices
- Priority (service policy) of data traffic, e.g. SNA-over-IP
- DLSW peer implementation with ISDN backup, without disconnection of the DLSW circuits
- HSRP with different groups (backup scenario)
- Network design from the point of view of „traffic share“ and „redundant scenario“
- Connect IBM 3174 and “Kassencontroller” over token-ring and serial lines
- NTP and SNMP implementation
- Troubleshooting in the entire IT environment with analysers like WaGo Domino, Expert Sniffer
- Concepts of customized workshops
- Attendance and bid proposal management for projects like SNA-Switching
- LAN/WAN 3rd level support troubleshooting across the company
Used Routingprotocols
OSPF, EIGRP
Used Techniques
NAT, IPsec, VPN, Backup over dial on-demand, HSRP
Used Hardware
- Cisco Switch: 29xx, 35xx, 45xx, 65xx
- Cisco Router: 7206, 36xx, 26xx, 17xx
- Nokia IP30/350
01/03 – 04/03
- Consulting and Troubleshooting (LAN [Token-Ring]; ATM [LANE])
- Design and Installation of Layer 2 and 3
- Migration of LANE – Token-Ring to Ethernet (approx. 1900 users)
Used Hardware
- Cisco Switches: 35xx, 65xx
01/03 – 01/03
- Design and Installation of Security/VPN´s over T-DSL; remote dial-in from different countries with PC´s
- Consulting Security VPN
- Implementation of OSPF with backup over ISDN
- Pre- and Postsales Support Security
- Redesign of the network
Used Hardware
- Cisco Router: 26xx, VPNclient
01/02 – 10/02
- Design and installation of Layer 1, 2 and 3
- Consulting and troubleshooting (LAN/WAN)
- New design and implementation of the WAN line
- Support for the clients (NT and Win 2000)
Used Routingprotocols
static routing
Used Hardware
- Sonix Firewall
01/01 – 10/02
- Contract for certified Cisco seminars
Certified for following seminars as instructor
ICND, IMCR, BCMSN, BCRAN, BSCI, CIT, CCIE-Prep-Lab
Technical Certification
CCNA, CCDA, CCNP, CCSI, CCIE
07/01 – 09/01
- 3rd level support
- Installation and extension of the network
Used Hardware
- Cisco Router: 26xx, 36xx, 720x
- Switches: 29xx, 650x
05/01 – 07/01
- Installation and consulting with Cisco products
- Main focus on different routing protocols
02/01 – 12/01
- Planning and installation of the complete network
- 3rd level support
- Design, selection and installation of WAN lines (speed – provider)
- Implementation and configuration of BGP-4, HSRP, RIP v1/2, Vlan´s, Trunking etc.
Used Hardware
- Cisco Router: 26xx, 36xx
- Switches: 29xx, 650x
09/99 – 09/00
- Development and performance of the trainee program to be certified as CCSI (Certified Cisco Systems Instructor)
- Selection and engagement of trainees
- Installation and consulting with different Cisco products
- Telephone and in-house support with related companies
Used Hardware
- Cisco Router: 80x – 720x
- Switches: 19xx – 650x
03/99 – 09/99
- Change of the Germany-wide network from static routing to the dynamic routing protocol OSPF
- Responsible for HSRP, BGP-4, Tunneling, VPN´s and IOS security
- Tracking and testing the online traffic with the related products (router / switches / network analyser [DA30; Expert Sniffer])
- 3rd level support for WAN (Frame-Relay) and LAN (Ethernet and Token Ring)
- Germany-wide rollout and automatic distribution of the system configuration for Cisco products
- Network design and consulting for the customer LZB Deutschland
Used Hardware
- Cisco Router: 36xx, 26xx, 25xx, 72xx, 75xx
- Switches: 650x, 29xx
- Network Analyser: DA30, Expert-Sniffer, Linux
1994 – 1995
- Customized trainings for Novell Netware
- Diagnostics and analysis of network architectures and protocols, for example Novell NetWare, DECnet, TCP/IP and more
- Implementation Novell Network (with 20 users)
- Consulting and troubleshooting in heterogeneous network environment with approx. 350 users
Used Protocols
NT, Novell, DECnet

Profile

07/18 – 03/19

03/18 – 06/18

09/17 – 02/18

03/17 – 12/17

01/17 – 03/17

12/14 – 12/16

04/14 – 04/15

05/13 – 03/14

04/11 – 04/13

09/10 – 03/11

01/10 – 09/10

08/09 – 12/09

01/06 – 07/09

11/04 – 12/05

10/04 – 11/04

07/04 – 10/04

08/03 – 07/04

04/03 – 08/03

01/03 – 04/03

01/03 – 01/03

01/02 – 10/02

01/01 – 10/02

07/01 – 09/01

05/01 – 07/01

02/01 – 12/01

09/99 – 09/00

03/99 – 09/99

1994 – 1995